Sesar, Branimir, Ivezic, Zeljko, Grammer, Skyler H., Morgan, Dylan P., Becker, Andrew C., Juric, Mario, ...
We present an improved analysis of halo substructure traced by RR Lyrae stars in the SDSS stripe 82 region. With the addition of SDSS-II data, a revised selection method based on new ugriz light...
Binary Quasars at High Redshift I: 24 New Quasar Pairs at z ~ 3-4 (2009)
Hennawi, Joseph F., Myers, Adam D., Shen, Yue, Strauss, Michael A., Djorgovski, S. G., Fan, Xiaohui, ...
The clustering of quasars on small scales yields fundamental constraints on models of quasar evolution and the buildup of supermassive black holes. This paper describes the first systematic survey to...
Binary Quasars at High Redshift II: Sub-Mpc Clustering at z ~ 3-4 (2009)
Shen, Yue, Hennawi, Joseph F., Shankar, Francesco, Myers, Adam D., Strauss, Michael A., Djorgovski, S. G., ...
We present measurements of the small-scale (0.1
Eddington ratio governs the equivalent width of MgII emission line in active galactic nuclei (2009)
Dong, Xiao-Bo, Wang, Ting-Gui, Wang, Jian-Guo, Fan, Xiaohui, Wang, Huiyuan, Zhou, Hongyan, ...
We have investigated the ensemble regularities of the equivalent widths (EWs) of MgII 2800 emission line of active galactic nuclei (AGNs), using a uniformly selected sample of 2092 Seyfert 1 galaxies...
An Observational Determination of the Proton to Electron Mass Ratio in the Early Universe (2009)
Thompson, Rodger I., Bechtold, Jill, Black, John H., Eisenstein, Daniel, Fan, Xiaohui, Kennicutt, Robert C., ...
In an effort to resolve the discrepancy between two measurements of the fundamental constant mu, the proton to electron mass ratio, at early times in the universe we reanalyze the same data used in...
Jiang, Linhua, Fan, Xiaohui, Bian, Fuyan, Annis, James, Chiu, Kuenley, Jester, Sebastian, ...
We present the discovery of six new quasars at z ~ 6 selected from the Sloan Digital Sky Survey (SDSS) southern survey, a deep imaging survey obtained by repeatedly scanning a stripe along the...
Stephens, D. C., Leggett, S. K., Cushing, Michael C., Marley, Mark S., Saumon, D., Geballe, T. R., ...
We present new 5.2-14.5 micron low-resolution spectra of 14 mid-L to mid-T dwarfs, as well as 3.0-4.1 micron spectra for five of these dwarfs. These data are supplemented by existing red and...
The Seventh Data Release of the Sloan Digital Sky Survey (2009)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...
This paper describes the Seventh Data Release of the Sloan Digital Sky Survey (SDSS), marking the completion of the original goals of the SDSS and the end of the phase known as SDSS-II. It includes...
A Survey of z~6 Quasars in the SDSS Deep Stripe. II. Discovery of Six Quasars at z_{AB}>21 (2009)
Jiang, Linhua, Fan, Xiaohui, Bian, Fuyan, Annis, James, Chiu, Kuenley, Jester, Sebastian, ...
We present the discovery of six new quasars at z~6 selected from the Sloan Digital Sky Survey (SDSS) southern survey, a deep imaging survey obtained by repeatedly scanning a stripe along the...
High-Redshift SDSS Quasars with Weak Emission Lines (2009)
Diamond-Stanic, Aleksandar M., Fan, Xiaohui, Brandt, W. N., Shemmer, Ohad, Strauss, Michael A., Anderson, Scott F., ...
We identify a sample of 74 high-redshift quasars (z>3) with weak emission lines from the Fifth Data Release of the Sloan Digital Sky Survey and present infrared, optical, and radio observations of a...
What controls the FeII strength in active galactic nuclei? (2009)
Dong, Xiaobo, Wang, Jianguo, Wang, Tinggui, Wang, Huiyuan, Fan, Xiaohui, Zhou, Hongyan, ...
We have investigated the correlations of the equivalent widths (EWs) of narrow and broad FeII emission lines and the FeII/MgII intensity ratio with fundamental physical parameters of active galactic...
Fan, Xiaohui, Shi, Leming, Fang, Hong, Harris, Stephen, Perkins, Roger, Tong, Weida
Abstract Recent publications have raised concerns about the reliability of microarray technology because of the lack of reproducibility of differentially expressed genes (DEGs) from highly similar...
The origin and physical mechanism of the ensemble Baldwin effect (2009)
Dong, Xiaobo, Wang, Jianguo, Wang, Tinggui, Wang, Huiyuan, Fan, Xiaohui, Zhou, Hongyan, ...
We have conducted a systematic investigation of the origin and underlying physics of the line--line and line--continuum correlations of AGNs, particularly the Baldwin effect. Based on the homogeneous...
X-ray Insights into the Nature of Weak Emission-Line Quasars at High Redshift (2009)
Shemmer, Ohad, Brandt, W. N., Anderson, Scott F., Diamond-Stanic, Aleksandar M., Fan, Xiaohui, Richards, Gordon T., ...
We present Chandra observations of nine high-redshift quasars (z=2.7-5.9) discovered by the Sloan Digital Sky Survey with weak or undetectable high-ionization emission lines in their UV spectra...
The seventh data release of the sloan digital sky survey (2009)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, An, Deokkeun, ...
Eddington ratio governs the equivalent width of Mg II emission line in active galactic nuclei (2009)
Dong, Xiao-Bo, Wang, Ting-Gui, Wang, Jian-Guo, Fan, Xiaohui, Wang, Huiyuan, Zhou, Hongyan, ...
Kelly, Brandon C., Vestergaard, Marianne, Fan, Xiaohui
We describe a Bayesian approach to estimating quasar black hole mass functions (BHMF) when using the broad emission lines to estimate black hole mass. We show how using the broad line mass estimates...
Quasar Clustering from SDSS DR5: Dependences on Physical Properties (2008)
Shen, Yue, Strauss, Michael A., Ross, Nicholas P., Hall, Patrick B., Lin, Yen-Ting, Richards, Gordon T., ...
Using a homogenous sample of 38,208 quasars with a sky coverage of $4000 {\rm deg^2}$ drawn from the SDSS Data Release Five quasar catalog, we study the dependence of quasar clustering on luminosity,...
A Catalog of Broad Absorption Line Quasars in Sloan Digital Sky Survey Data Release 5 (2008)
Gibson, Robert R., Jiang, Linhua, Brandt, W. N., Hall, Patrick B., Shen, Yue, Wu, Jianfeng, ...
We present a catalog of 5039 broad absorption line (BAL) quasars (QSOs) in the Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5) QSO catalog that have absorption troughs covering a continuous...
Observations of the Gas Reservoir around a Star Forming Galaxy in the Early Universe (2008)
Frye, Brenda L., Bowen, David. V., Hurley, Mairead, Tripp, Todd M., Fan, Xiaohui, Holden, Bradley, ...
We present a high signal-to-noise spectrum of a bright galaxy at z = 4.9 in 14 h of integration on VLT FORS2. This galaxy is extremely bright, i_850 = 23.10 +/- 0.01, and is strongly-lensed by the...
A Flexible Method of Estimating Luminosity Functions (2008)
Kelly, Brandon C., Fan, Xiaohui, Vestergaard, Marianne
We describe a Bayesian approach to estimating luminosity functions. We derive the likelihood function and posterior probability distribution for the luminosity function, given the observed data, and...
Luminosity Function Constraints on the Evolution of Massive Red Galaxies Since z~0.9 (2008)
Cool, Richard J., Eisenstein, Daniel J., Fan, Xiaohui, Fukugita, Masataka, Jiang, Linhua, Maraston, Claudia, ...
We measure the evolution of the luminous red galaxy (LRG) luminosity function in the redshift range 0.1
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Prieto, Carlos Allende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
A Sample of Quasars with Strong Nitrogen Emission Lines from the Sloan Digital Sky Survey (2008)
Jiang, Linhua, Fan, Xiaohui, Vestergaard, M.
We report on 293 quasars with strong NIV] lambda 1486 or NIII] lambda 1750 emission lines (rest-frame equivalent width > 3 \AA) at 1.7 < z < 4.0 selected from the Sloan Digital Sky Survey (SDSS)...
Heidi Jo Newberg, Gordon T. Richards, Michael Richmond, Xiaohui Fan
We present a catalog containing the measurements of 2262 sources, including 334 extended sources, 1915 point sources, and 13 known QSOs, in ve SDSS passbands. Of these objects, over 1600 are measured...
NICMOS Measurements of the Near Infrared Background (2008)
Thompson, Rodger I., Eisenstein, Daniel, Fan, Xiaohui, Rieke, Marcia, Kennicutt, Robert
This paper addresses the nature of the near infrared background. We investigate whether there is an excess background at 1.4 microns, what is the source of the near infrared background and whether...
Li, Yuexing, Hopkins, Philip F., Hernquist, Lars, Finkbeiner, Douglas P., Cox, Thomas J., Springel, Volker, ...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the sloan digital sky survey (2008)
Adelman-McCarthy, Jennifer K., Agüros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, Anderson, Kurt S. J., Anderson, Scott F., ...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
Four faint T dwarfs from the UKIRT Infrared Deep Sky Surveys (UKIDSS) Southern Stripe (2008)
Chiu, Kuenley, Liu, Michael C., Jiang, Linhua, Allers, Katelyn N., Stark, Daniel P., Bunker, Andrew, ...
We present the optical and near-infrared photometry and spectroscopy of four faint T dwarfs newly discovered from the UKIDSS first data release. The sample, drawn from an imaged area of ∼136...
Improved cosmological constraints from new, old, and combined supernova data sets (2008)
Kowalski, M., Rubin, D., Aldering, G., Agostinho, R. J., Amadon, A., Amanullah, R., ...
We present a new compilation of Type Ia supernovae (SNe Ia), a new data set of low-redshift nearby-Hubble-flow SNe, and new analysis procedures to work with these heterogeneous compilations. This...
Thermal emission from warm dust in the most distant quasars (2008)
Wang, Ran, Carilli, Chris L., Wagg, Jeff, Bertoldi, Frank, Walter, Fabian, Menten, Karl M., ...
We report new continuum observations of 14 z~6 quasars at 250 GHz and 14 quasars at 1.4 GHz. We summarize all recent millimeter and radio observations of the sample of the 33 quasars known with...
Sharc-II 350 mm observations of thermal emission from warm dust in z >= 5 Quasars (2008)
Wang, Ran, Wagg, Jeff, Carilli, Chris L., Benford, Dominic J., Dowell, C. Darren, Bertoldi, Frank, ...
We present observations of four z >= 5 SDSS quasars at 350 mum with the SHARC-II bolometer camera on the Caltech Submillimeter Observatory. These are among the deepest observations that have been...
Jiang, Linhua, Fan, Xiaohui, Annis, James, Becker, Robert H., White, Richard L., Chiu, Kuenley, ...
We present the discovery of five quasars at z ~ 6 selected from 260 deg2 of the Sloan Digital Sky Survey (SDSS) southern survey, a deep imaging survey obtained by repeatedly scanning a stripe along...
Yuexing Li, Philip F. Hopkins, Lars Hernquist, Douglas P. Finkbeiner, Thomas J. Cox, Volker Springel, ...
The detection of large quantities of dust in z ∼ 6 quasars by infrared and radio surveys presents puzzles for the formation and evolution of dust in these early systems. Previously (Li et al....
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
Four faint T dwarfs from the UKIRT Infrared Deep Sky Surveys (UKIDSS) Southern Stripe (2008)
Chiu, Kuenley, Liu, Michael C., Jiang, Linhua, Allers, Katelyn N., Stark, Daniel P., Bunker, Andrew, ...
We present the optical and near-infrared photometry and spectroscopy of four faint T dwarfs newly discovered from the UKIDSS first data release. The sample, drawn from an imaged area of ∼136 deg2...
Improved cosmological constraints from new, old, and combined supernova data sets (2008)
Kowalski, M., Rubin, D., Aldering, G., Agostinho, R. J., Amadon, A., Amanullah, R., ...
We present a new compilation of Type Ia supernovae (SNe Ia), a new data set of low-redshift nearby-Hubble-flow SNe, and new analysis procedures to work with these heterogeneous compilations. This...
SHARC-II 350 micron Observations of Thermal Emission from Warm Dust in z>=5 Quasars (2007)
Wang, Ran, Wagg, Jeff, Carilli, Chris L., Benford, Dominic J., Dowell, C. Darren, Bertoldi, Frank, ...
We present observations of four z>= SDSS quasars at 350 micron with the SHARC-II bolometer camera on the Caltech Submillimeter Observatory. These are among the deepest observations that have been...
Four Faint T Dwarfs from the UKIRT Infrared Deep Sky Survey (UKIDSS) Southern Stripe (2007)
Chiu, Kuenley, Liu, Michael C., Jiang, Linhua, Allers, Katelyn N., Stark, Daniel P., Bunker, Andrew, ...
We present the optical and near-infrared photometry and spectroscopy of four faint T dwarfs newly discovered from the UKIDSS first data release. The sample, drawn from an imaged area of ~136 square...
Michael A. Strauss, Xiaohui Fan, James E. Gunn, S. K. Leggett, T. R. Geballe, Jeffrey R. Pier, ...
We report the discovery of the coolest field dwarf yet known, selected as an unresolved object with extremely red colors from commissioning imaging data of the Sloan Digital Sky Survey. Its spectrum...
Simulation of Stellar Objects in SDSS Color Space (2007)
We present a simulation of the spatial, luminosity and spectral distributions of four types of stellar objects. We simulate: (1) Galactic stars, based on a Galactic structure model, a stellar...
Determining the Amplitude of Mass Fluctuations in the Universe (2007)
Xiaohui Fan, Neta A. Bahcall, Renyue Cen
We present a method for determining the rms mass fluctuations on 8 h \Gamma1 Mpc scale, oe 8 . The method utilizes the rate of evolution of the abundance of rich clusters of galaxies. Using the...
Deep Wide-Field Spectrophotometry of the Open Cluster M67 (2007)
Xiaohui Fan, David Burstein, Jian-sheng Chen, Jin Zhu, Zhaoji Jiang, Hong Wu, ...
We present nine color CCD intermediate-band spectrophotometry of a two square degree field centered on the old open cluster M67, from 3890 A to nearly 1¯. These observations are taken as a part of...
The Most Massive Distant Clusters: (2007)
Determining Omega, Neta A. Bahcall, Xiaohui Fan
The existence of the three most massive clusters of galaxies observed so far at z ? 0:5 is used to constrain the mass density parameter of the universe,\Omega\Gamma and the amplitude of mass...
Xiaohui Fan, Michael Strauss, Donald P. Schneider, James E. Gunn, Robert H. Lupton, Brian Yanny, ...
We present photometric and spectroscopic observations of 15 high-redshift quasars (z ? 3:6) discovered from ¸ 140 deg 2 of five-color (u 0 g 0 r 0 i 0 z 0 ) imaging data taken by the Sloan Digital...
Heidi Jo Newberg, Michael Richmond, Xiaohui Fan
We present a catalog containing the measurements of 2262 sources, including 334 extended sources, 1915 point sources, and 13 known QSOs, in five SDSS passbands. Of these objects, over 1600 are...
Gardner, Jonathan P., Fan, Xiaohui, Wilson, Gillian, Stiavelli, Massimo
The James Webb Space Telescope (JWST) is the successor to the Hubble and Spitzer Space Telescopes. It has a broad scientific mission which includes spectroscopic studies of the epoch of reionization...
A Survey of z~6 Quasars in the SDSS Deep Stripe: I. a Flux-Limited Sample at z_{AB} (2007)
Jiang, Linhua, Fan, Xiaohui, Annis, James, Becker, Robert H., White, Richard L., Chiu, Kuenley, ...
We present the discovery of five quasars at z~6 selected from 260 deg^2 of the Sloan Digital Sky Survey (SDSS) southern survey, a deep imaging survey obtained by repeatedly scanning a stripe along...
Black hole masses and enrichment of z ~ 6 SDSS quasars (2007)
Kurk, Jaron D., Walter, Fabian, Fan, Xiaohui, Jiang, Linhua, Riechers, Dominik A., Rix, Hans-Walter, ...
We present sensitive near-infrared spectroscopic observations for a sample of five z ~ 6 quasars. These are amongst the most distant, currently known quasars in the universe. The spectra have been...
Jiang, Linhua, Fan, Xiaohui, Vestergaard, Marianne, Kurk, Jaron D., Walter, Fabian, Kelly, Brandon C., ...
We present Gemini near-infrared spectroscopic observations of six luminous quasars at z=5.8$\sim$6.3. Five of them were observed using Gemini-South/GNIRS, which provides a simultaneous wavelength...
Li, Yuexing, Hopkins, Philip F., Hernquist, Lars, Finkbeiner, Douglas P., Cox, Thomas J., Springel, Volker, ...
The detection of large quantities of dust in z ~ 6 quasars by infrared and radio surveys presents puzzles for the formation and evolution of dust in these early systems. Previously (Li et al. 2007),...
Evidence for a Z < 8 Origin of the Source Subtracted Near Infrared Background (2007)
Thompson, Rodger I., Eisenstein, Daniel, Fan, Xiaohui, Rieke, Marcia, Kennicutt, Robert C.
This letter extends our previous fluctuation analysis of the near infrared background at 1.6 microns to the 1.1 micron (F110W) image of the Hubble Ultra Deep field. When all detectable sources are...
Clustering of high-redshift (z >= 2.9) quasars from the sloan digital sky survey (2007)
Shen, Yue, Strauss, Michael A., Oguri, Masamune, Hennawi, Joseph F., Fan, Xiaohui, Richards, Gordon T., ...
We study the two-point correlation function of a uniformly selected sample of 4426 luminous optical quasars with redshift 2:9 z 5:4 selected over 4041 deg2 from the Fifth Data Release of the Sloan...
Millimeter and Radio Observations of z~6 Quasars (2007)
Wang, Ran, Carilli, Chris, Beelen, Alexandre, Bertoldi, Frank, Fan, Xiaohui, Walter, Fabian, ...
We present millimeter and radio observations of 13 SDSS quasars at reshifts z~6. We observed eleven of them with the Max-Planck Millimeter Bolometer Array (MAMBO-2) at the IRAM 30m-telescope at 250...
The Sloan Digital Sky Survey Quasar Catalog IV. Fifth Data Release (2007)
Schneider, Donald P., Hall, Patrick B., Richards, Gordon T., Strauss, Michael A., Berk, Daniel E. Vanden, Anderson, Scott F., ...
We present the fourth edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog contains 77,429 objects; this is an increase of over 30,000 entries since the previous edition. The...
Clustering of High Redshift ($z\ge 2.9$) Quasars from the Sloan Digital Sky Survey (2007)
Shen, Yue, Strauss, Michael A., Oguri, Masamune, Hennawi, Joseph F., Fan, Xiaohui, Richards, Gordon T., ...
(Abridged) We study the two-point correlation function of a uniformly selected sample of 4,426 luminous optical quasars with redshift $2.9 \le z\le 5.4$ selected over 4041 deg$^2$ from the Fifth Data...
The fifth data release of the sloan digital sky survey (2007)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
Millimeter and radio observations of z~6 quasars (2007)
Wang, Ran, Carilli, Chris, Beelen, Alexandre, Bertoldi, Frank, Fan, Xiaohui, Walter, Fabian, ...
We present millimeter and radio observations of 13 SDSS quasars at reshifts z~6. We observed eleven of them with the Max-Planck Millimeter Bolometer Array (MAMBO-2) at the IRAM 30m-telescope at 250...
The Sloan Digital Sky Survey Quasar Catalog. IV. Fifth Data Release (2007)
Schneider, Donald P., Hall, Patrick B., Richards, Gordon T., Strauss, Michael A., Vanden Berk, Daniel E., Anderson, Scott F., ...
We present the fourth edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog contains 77,429 objects; this is an increase of over 30,000 entries since the previous edition. The...
The Fifth Data Release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
Metallicity and black hole masses of z6 quasars (2007)
Kurk, Jaron D., Walter, Fabian, Riechers, Dominik, Rix, Hans-Walter, Wagner, Stefan, Pentericci, Laura, ...
Not Available
The fifth data release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
The Fifth Data Release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
The Fifth Data Release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
The fifth data release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
Brown dwarfs and high-redshift quasars in the UKIDSS? Unlikely neighbors in the infrared (2007)
Chiu, Kuenley, Bunker, Andrew J., Glazebrook, Karl, Jiang, Linhua, Fan, Xiaohui, Fan, Xiaohui, ...
Over the ~ 5 years of its full operations, the SDSS rapidly broke high redshift quasar and brown dwarf discovery barriers by exploiting the advantages of the near-infrared/optical z filter, combined...
Constraints on the Cosmic Near Infrared Background Excess from NICMOS Deep Field Observations (2006)
Thompson, Rodger I., Eisenstein, Daniel, Fan, Xiaohui, Rieke, Marcia, Kennicutt, Robert C.
NICMOS observations of the resolved object fluxes in the Hubble Deep Field North and the Hubble Ultra Deep Field are significantly below the fluxes attributed to a 1.4 - 1.8 microns Near InfraRed...
The Radio-Loud Fraction of Quasars is a Strong Function of Redshift and Optical Luminosity (2006)
Jiang, Linhua, Fan, Xiaohui, Ivezic, Zeljko, Richards, Gordon T., Schneider, Donald P., Strauss, Michael A., ...
Using a sample of optically-selected quasars from the Sloan Digital Sky Survey, we have determined the radio-loud fraction (RLF) of quasars as a function of redshift and optical luminosity. The...
Probing the Evolution of IR Properties of z~6 Quasars: Spitzer Observations (2006)
Jiang, Linhua, Fan, Xiaohui, Hines, Dean C., Shi, Yong, Vestergaard, Marianne, Bertoldi, Frank, ...
We present Spitzer observations of thirteen z~6 quasars using the Infrared Array Camera (IRAC) and Multiband Imaging Photometer for Spitzer (MIPS). All the quasars except SDSS J000552.34-000655.8...
Star Formation History of the Hubble Ultra Deep Field: Comparison with the HDFN (2006)
Thompson, Rodger I., Eisenstein, Daniel, Fan, Xiaohui, Dickinson, Mark, Illingworth, Garth, Kennicutt, Robert C.
We use the NICMOS Treasury and ACS HUDF images to measure the extinction corrected star formation history for 4681 galaxies in the region common to both images utilizing the star formation rate...
The Discovery of Three New z>5 Quasars in the AGN and Galaxy Evolution Survey (2006)
Cool, Richard J., Kochanek, Christopher S., Eisenstein, Daniel J., Stern, Daniel, Brand, Kate, Brown, Michael J. I., ...
We present the discovery of three z>5 quasars in the AGN and Galaxy Evolution Survey (AGES) spectroscopic observations of the NOAO Deep Wide-Field Survey (NDWFS) Bootes Field. These quasars were...
Liu, Michael C., Leggett, S. K., Golimowski, David A., Chiu, Kuenley, Fan, Xiaohui, Geballe, T. R., ...
We have resolved the newly discovered T dwarf SDSS J1534+1615 into a 0.11'' binary using the Keck sodium laser guide star adaptive optics system. With an integrated-light spectral type of T3.5, this...
Cosmic Reionization Redux (2006)
Gnedin, Nickolay Y., Fan, Xiaohui
We show that numerical simulations of reionization that resolve the Lyman Limit systems (and, thus, correctly count absorptions of ionizing photons) have converged to about 10% level for 5
Quasars Probing Quasars I: Optically Thick Absorbers Near Luminous Quasars (2006)
Hennawi, Joseph F., Prochaska, Jason X., Burles, Scott, Strauss, Michael A., Richards, Gordon T., Schlegel, David J., ...
With close pairs of quasars at different redshifts, a background quasar sightline can be used to study a foreground quasar's environment in absorption. We search 149 moderate resolution background...
Trump, Jonathan R., Hall, Patrick B., Reichard, Timothy A., Richards, Gordon T., Schneider, Donald P., Berk, Daniel E. Vanden, ...
We present a total of 4784 unique broad absorption line quasars from the Sloan Digital Sky Survey Third Data Release. An automated algorithm was used to match a continuum to each quasar and to...
Chandra Observations of the Highest Redshift Quasars from the Sloan Digital Sky Survey (2006)
Shemmer, Ohad, Brandt, W. N., Schneider, Donald P., Fan, Xiaohui, Strauss, Michael A., Diamond-Stanic, Aleksandar M., ...
We present new Chandra observations of 21 z>4 quasars, including 11 sources at z>5. These observations double the number of X-ray detected quasars at z>5, allowing investigation of the X-ray spectral...
Observational constraints on Cosmic Reionization (2006)
Fan, Xiaohui, Carilli, C. L., Keating, B.
Recent observations have set the first constraints on the epoch of reionization (EoR), corresponding to the formation epoch of the first luminous objects. Studies of Gunn-Peterson (GP) absorption,...
Spectral Energy Distributions and Multiwavelength Selection of Type 1 Quasars (2006)
Richards, Gordon T., Lacy, Mark, Storrie-Lombardi, Lisa J., Hall, Patrick B., Gallagher, S. C., Hines, Dean C., ...
We present an analysis of the mid-infrared (MIR) and optical properties of type 1 (broad-line) quasars detected by the Spitzer Space Telescope. The MIR color-redshift relation is characterized to...
The SDSS Quasar Survey: Quasar Luminosity Function from Data Release Three (2006)
Richards, Gordon T., Strauss, Michael A., Fan, Xiaohui, Hall, Patrick B., Jester, Sebastian, Schneider, Donald P., ...
We determine the number counts and z=0-5 luminosity function for a well-defined, homogeneous sample of quasars from the Sloan Digital Sky Survey (SDSS). We conservatively define the most uniform...
The fourth data release of the sloan digital sky survey (2006)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
The fourth data release of the sloan digital sky survey (2006)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
The fourth data release of the sloan digital sky survey (2006)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
Fan, Xiaohui, Strauss, Michael A., Richards, Gordon T., Hennawi, Joseph F., Becker, Robert H., White, Richard L., ...
The Sloan Digital Sky Survey quasar survey: Quasar luminosity function from data release 3 (2006)
Richards, Gordon T., Strauss, Michael A., Fan, Xiaohui, Hall, Patrick B., Jester, Sebastian, Schneider, Donald P., ...
We determine the number counts and z=0-5 luminosity function for a well-defined, homogeneous sample of quasars from the Sloan Digital Sky Survey (SDSS). We conservatively define the most uniform...
Spectral energy distributions and multiwavelength selection of type 1 quasars (2006)
Richards, Gordon T., Lacy, Mark, Storrie-Lombardi, Lisa J., Hall, Patrick B., Gallagher, S. C., Hines, Dean C., ...
We present an analysis of the mid-infrared (MIR) and optical properties of type 1 (broad-line) quasars detected by the Spitzer Space Telescope. The MIR color-redshift relation is characterized to...
Probing the evolution of infrared properties of z ~ 6 quasars: Spitzer observations (2006)
Jiang, Linhua, Fan, Xiaohui, Hines, Dean C., Shi, Yong, Vestergaard, Marianne, Bertoldi, Frank, ...
We present Spitzer observations of 13 z~6 quasars using the Infrared Array Camera (IRAC) and Multiband Imaging Photometer for Spitzer (MIPS). All the quasars except SDSS J000552.34-000655.8 (SDSS...
The Fourth Data Release of the Sloan Digital Sky Survey (2006)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data...
The fourth data release of the Sloan Digital Sky Survey (2006)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data...
The fourth data release of the Sloan Digital Sky Survey (2006)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data...
The fourth data release of the Sloan Digital Sky Survey (2006)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data...
A MMT/Hectospec Redshift Survey of 24 Micron Sources in the Spitzer First Look Survey (2005)
Papovich, Casey, Cool, Richard, Eisenstein, Daniel, Floc'h, Emeric Le, Fan, Xiaohui, Kennicutt, Robert C., ...
We present a spectroscopic survey using the MMT/Hectospec fiber spectrograph of 24 micron sources selected with the Spitzer Space Telescope in the Spitzer First Look Survey. We report 1296 new...
Fan, Xiaohui, Strauss, Michael A., Richards, Gordon T., Hennawi, Joseph F., Becker, Robert H., White, Richard L., ...
We present the discovery of seven quasars at z>5.7, selected from ~2000 deg^2 of multicolor imaging data of the Sloan Digital Sky Survey (SDSS). The new quasars have redshifts z from 5.79 to 6.13....
Fan, Xiaohui, Strauss, Michael A., Becker, Robert H., White, Richard L., Gunn, James E., Knapp, Gillian R., ...
We study the evolution of the ionization state of the IGM at the end of the reionization epoch using spectra of a sample of nineteen quasars at 5.7411}, and the average length of dark gaps with...
A Snapshot Survey for Gravitational Lenses Among z>=4.0 Quasars: II. Constraints on the 4.0 (2005)
Richards, Gordon T., Haiman, Zoltan, Pindor, Bartosz, Strauss, Michael A., Fan, Xiaohui, Eisenstein, Daniel, ...
We report on i-band snapshot observations of 157 Sloan Digital Sky Survey (SDSS) quasars at 4-4.63 obtained from the absence of lensing in four z>5.7 quasars. Such constraints are important for our...
Sensitive observations at 1.4 and 250 GHz of z > 5 QSOs (2005)
Petric, A. O., Carilli, C. L., Bertoldi, F., Fan, Xiaohui, Cox, P., Strauss, Michael A., ...
We present 1.4 and 5 GHz observations taken with the Very Large Array (VLA), and observations at 250 GHz obtained with the Max-Planck millimeter bolometer (MAMBO) at the IRAM 30~m telescope, of ten...
Molecular Gas in the Host Galaxy of a Quasar at Redshift z=6.42 (2005)
Walter, Fabian, Bertoldi, Frank, Carilli, Chris, Cox, Pierre, Lo, K. Y., Neri, Roberto, ...
Observations of the molecular gas phase in quasar host galaxies provide fundamental constraints on galaxy evolution at the highest redshifts. Molecular gas is the material out of which stars form; it...
Hennawi, Joseph F., Strauss, Michael A., Oguri, Masamune, Inada, Naohisa, Richards, Gordon T., Pindor, Bartosz, ...
We present a sample of 218 new quasar pairs with proper transverse separations R_prop < 1 Mpc/h over the redshift range 0.5 < z < 3.0, discovered from an extensive follow up campaign to find...
The NICMOS Ultra Deep Field: Observations, Data Reduction, and Galaxy Photometry (2005)
Thompson, Rodger I., Illingworth, Garth, Bouwens, Rychard, Dickinson, Mark, Eisenstein, Daniel, Fan, Xiaohui, ...
This paper describes the observations and data reduction techniques for the version 2.0 images and catalog of the NICMOS Ultra Deep Field Treasury program. All sources discussed in this paper are...
An Empirical Calibration of the Completeness of the SDSS Quasar Survey (2005)
Berk, Daniel E. Vanden, Schneider, Donald P., Richards, Gordon T., Hall, Patrick B., Strauss, Michael A., Brunner, Robert, ...
Spectra of nearly 20000 point-like objects to a Galactic reddening corrected magnitude of i=19.1 have been obtained to test the completeness of the SDSS quasar survey. The spatially-unresolved...
Active Galactic Nuclei in the Sloan Digital Sky Survey: II. Emission-Line Luminosity Function (2005)
Hao, Lei, Strauss, Michael A., Fan, Xiaohui, Tremonti, Christy A., Schlegel, David J., Heckman, Timothy M., ...
The emission line luminosity function of active galactic nuclei (AGN) is measured from about 3000 AGN included in the main galaxy sample of the Sloan Digital Sky Survey within a redshift range of $0
Active Galactic Nuclei in the Sloan Digital Sky Survey: I. Sample Selection (2005)
Hao, Lei, Strauss, Michael A., Tremonti, Christy A., Schlegel, David J., Heckman, Timothy M., Kauffmann, Guinevere, ...
We have compiled a large sample of low-redshift active galactic nuclei (AGN) identified via their emission line characteristics from the spectroscopic data of the Sloan Digital Sky Survey. Since...
The third data release of the sloan digital sky survey (2005)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
The Third Data Release of the Sloan Digital Sky Survey (2005)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
Active galactic nuclei in the sloan digital sky survey. I. Sample selection (2005)
Hao, Lei, Strauss, Michael A., Tremonti, Christy A., Schlegel, David J., Heckman, Timothy M., Kauffmann, Guinevere, ...
Active galactic nuclei in the sloan digital sky survey. II. Emission-line luminosity function (2005)
Hao, Lei, Strauss, Michael A., Fan, Xiaohui, Tremonti, Christy A., Schlegel, David J., Heckman, Timothy M., ...
The sloan digital sky survey quasar catalog - III. Third data release (2005)
Schneider, Donald P., Hall, Patrick B., Richards, Gordon T., Vanden Berk, Daniel E., Anderson, Scott F., Fan, Xiaohui, ...
Active Galactic Nuclei in the Sloan Digital Sky Survey. I. Sample Selection (2005)
Hao, Lei, Strauss, Michael A., Tremonti, Christy A., Schlegel, David J., Heckman, Timothy M., Kauffmann, Guinevere, ...
The Third Data Release of the Sloan Digital Sky Survey (2005)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg2,...
The third data release of the Sloan Digital Sky Survey (2005)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg²,...
The third data release of the Sloan Digital Sky Survey (2005)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg²,...
The third data release of the Sloan Digital Sky Survey (2005)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg²,...
Yahata, Kazuhiro, Suto, Yasushi, Kayo, Issha, Matsubara, Takahiko, Connolly, Andrew, Berk, Daniel Vanden, ...
We report the first result of the clustering analysis of Sloan Digital Sky Survey (SDSS) quasars. We compute the two-point correlation function (2PCF) of SDSS quasars in redshift space at...
White, Richard L., Becker, Robert H., Fan, Xiaohui, Strauss, Michael A.
The Hubble Advanced Camera for Surveys has been used to obtain a narrow-band image of the weak emission peak seen at lambda=7205 A in the Gunn-Peterson Ly beta absorption trough of the highest...
Efficient Photometric Selection of Quasars from the Sloan Digital Sky Survey: 100,000 z (2004)
Richards, Gordon T., Nichol, Robert C., Gray, Alexander G., Brunner, Robert J., Lupton, Robert H., Berk, Daniel E. Vanden, ...
We present a catalog of 100,563 unresolved, UV-excess (UVX) quasar candidates to g=21 from 2099 deg^2 of the Sloan Digital Sky Survey (SDSS) Data Release One (DR1) imaging data. Existing spectra of...
Fan, Xiaohui, Hennawi, Joseph F., Richards, Gordon T., Strauss, Michael A., Schneider, Donald P., Donley, Jennifer L., ...
We present the discovery of five new quasars at z>5.7, selected from the multicolor imaging data of the Sloan Digital Sky Survey (SDSS). Three of them, at redshifts 5.93, 6.07, and 6.22, were...
Fan, Xiaohui, Hennawi, Joseph F., Richards, Gordon T., Strauss, Michael A., Schneider, Donald P., Donley, Jennifer L., ...
Probing the evolution of AGN (2004)
Hoyle, Fiona, Vogeley, Michael, Vanden Berk, Dan, Voges, Wolfgang, Fan, Xiaohui
The Second Data Release of the Sloan Digital sky survey (2004)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
Padmanabhan, Nikhil, Schlegel, David J., Carr, Michael A., Gunn, James E., Rockosi, Constance M., ...
The Second Data Release of the Sloan Digital sky survey (2004)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
The second data release of the Sloan Digital Sky Survey (2004)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt, Anderson, Scott F., ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg2 of five-band (ugriz) imaging data with photometry for...
Finkbeiner, Douglas P., Padmanabhan, Nikhil, Schlegel, David J., Carr, Michael A., Gunn, James E., Rockosi, Constance M., ...
The Sloan Digital Sky Survey (SDSS) mosaic camera and telescope have obtained five-band optical-wavelength imaging near the Galactic plane outside of the nominal survey boundaries. These additional...
The second data release of the Sloan Digital Sky Survey (2004)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg(2) of five-band (ugriz) imaging data with photometry for...
L ' and M ' photometry of ultracool dwarfs (2004)
Golimowski, David A., Leggett, Sandy K., Marley, Mark S., Fan, Xiaohui, Geballe, Thomas R., Knapp, Gillian R., ...
We have compiled L′ (3.4-4.1 μm) and M′ (4.6-4.8 μm) photometry of 63 single and binary M, L, and T dwarfs obtained at the United Kingdom Infrared Telescope using the Mauna...
Knapp, Gillian R., Leggett, Sandy K., Fan, Xiaohui, Marley, Mark S., Geballe, Thomas R., Golimowski, David A., ...
We present new JHK photometry on the MKO-NIR system and JHK spectroscopy for a large sample of L and T dwarfs. Photometry has been obtained for 71 dwarfs, and spectroscopy for 56. The sample...
The second data release of the Sloan Digital Sky Survey (2004)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg(2) of five-band (ugriz) imaging data with photometry for...
L ' and M ' photometry of ultracool dwarfs (2004)
Golimowski, David A., Leggett, Sandy K., Marley, Mark S., Fan, Xiaohui, Geballe, Thomas R., Knapp, Gillian R., ...
We have compiled L′ (3.4-4.1 μm) and M′ (4.6-4.8 μm) photometry of 63 single and binary M, L, and T dwarfs obtained at the United Kingdom Infrared Telescope using the Mauna...
Knapp, Gillian R., Leggett, Sandy K., Fan, Xiaohui, Marley, Mark S., Geballe, Thomas R., Golimowski, David A., ...
We present new JHK photometry on the MKO-NIR system and JHK spectroscopy for a large sample of L and T dwarfs. Photometry has been obtained for 71 dwarfs, and spectroscopy for 56. The sample...
Anderson, Scott, Voges, Wolfgang, Margon, Bruce, Trumper, Joachim, Agueros, Marcel, Boller, Thomas, ...
Also archived in: arXiv:astro-ph/0305093 v2 Aug 16 2003
A Snapshot Survey for Gravitational Lenses Among z>=4.0 Quasars: I. The z>5.7 Sample (2003)
Richards, Gordon T., Strauss, Michael A., Pindor, Bartosz, Haiman, Zoltan, Fan, Xiaohui, Eisenstein, Daniel, ...
Over the last few years, the Sloan Digital Sky Survey (SDSS) has discovered several hundred quasars with redshift between 4.0 and 6.4. Including the effects of magnification bias, one expects a...
Continuum and Emission-Line Properties of Broad Absorption Line Quasars (2003)
Reichard, Timothy A., Richards, Gordon T., Hall, Patrick B., Schneider, Donald P., Berk, Daniel E. Vanden, Fan, Xiaohui, ...
We investigate the continuum and emission-line properties of 224 broad absorption line quasars (BALQSOs) with 0.9
The Sloan Digital Sky Survey Quasar Catalog II. First Data Release (2003)
Schneider, Donald P., Fan, Xiaohui, Hall, Patrick B., Jester, Sebastian, Richards, Gordon T., Stoughton, Chris, ...
We present the second edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of 16713 objects in the SDSS First Data Release (DR1) that have luminosities larger than...
Pentericci, Laura, Rix, Hans W., Prada, Francisco, Fan, Xiaohui, Strauss, Michael A., Schneider, Donald P., ...
We present J-H-K' photometry for a sample of 45 high redshift quasars found by the Sloan Digital Sky Survey. The sample was originally selected on the basis of optical colors and spans a redshift...
Molecular Gas in the Host Galaxy of a Quasar at Redshift z=6.42 (2003)
Walter, Fabian, Bertoldi, Frank, Carilli, Chris, Cox, Pierre, Lo, K. Y., Neri, Roberto, ...
Observations of the molecular gas phase in quasar host galaxies provide fundamental constraints on galaxy evolution at the highest redshifts. Molecular gas is the material out of which stars form; it...
The C IV Mass Density of the Universe at Redshift 5 (2003)
Pettini, Max, Madau, Piero, Bolte, Michael, Prochaska, Jason X., Ellison, Sara L., Fan, Xiaohui
In order to search for metals in the Lyman alpha forest at redshifts z > 4, we have obtained spectra of high S/N and resolution of three QSOs at z > 5.4 discovered by the Sloan Digital Sky Survey....
Red and Reddened Quasars in the Sloan Digital Sky Survey (2003)
Richards, Gordon T., Hall, Patrick B., Berk, Daniel E. Vanden, Strauss, Michael A., Schneider, Donald P., Weinstein, Michael A., ...
We investigate the continuum and emission line properties of 4576 SDSS quasars as a function of their optical/UV SEDs. The optical/UV color distribution of our sample is roughly Gaussian, but with a...
Anderson, Scott F., Voges, Wolfgang, Margon, Bruce, Trümper, Joachim, Agüeros, Marcel A., Boller, Thomas, ...
Many open questions in X-ray astronomy are limited by the relatively small number of objects in uniform optically-identified samples, especially when rare subclasses are considered, or subsets...
Chiu, Weihsueh A., Fan, Xiaohui, Ostriker, Jeremiah P.
We present constraints on cosmological and star formation parameters based on combining observations of the Wilkinson Microwave Anisotropy Probe (WMAP) and high-redshift quasars from the Sloan...
Sensitive observations at 1.4 and 250 GHz of z > 5 QSOs (2003)
Petric, A. O., Carilli, C. L., Bertoldi, F., Fan, Xiaohui, Cox, P., Strauss, Michael A., ...
We present 1.4 and 5 GHz observations taken with the Very Large Array (VLA), and observations at 250 GHz obtained with the Max-Planck millimeter bolometer (MAMBO) at the IRAM 30~m telescope, of ten...
Probing the Ionization State of the Universe at z>6 (2003)
White, Richard L., Becker, Robert H., Fan, Xiaohui, Strauss, Michael A.
We present high signal-to-noise ratio Keck ESI spectra of the two quasars known to have Gunn-Peterson absorption troughs, SDSS J1030+0524 (z=6.28) and SDSS J1148+5251 (z=6.37). The Ly alpha and Ly...
Fan, Xiaohui, Strauss, Michael A., Schneider, Donald P., Becker, Robert H., White, Richard L., Haiman, Zoltan, ...
We present the discovery of three new quasars at z>6 in 1300 deg^2 of SDSS imaging data, J114816.64+525150.3 (z=6.43), J104845.05+463718.3 (z=6.23) and J163033.90+401209.6 (z=6.05). The first two...
Highest-redshift quasars - probing the end of reionization Elektronische Daten (2003)
Fan, Xiaohui, Astrophysics Conference
Talk Abstract von Kongress: Star and Structure Formation: From First Light to the Milky Way, Astrophysics Conference, August 18-22, 2003, ETH Zurich, Switzerland
Sensitive observations at 1.4 and 250 GHz of z > 5 QSOs (2003)
Petric, A. O., Carilli, C. L., Bertoldi, F., Fan, Xiaohui, Cox, P., Strauss, Michael A., ...
We present 1.4 and 5 GHz observations taken with the Very Large Array (VLA), and observations at 250 GHz obtained with the Max-Planck millimeter bolometer (MAMBO) at the IRAM 30~m telescope, of ten...
Molecular Gas in the Host Galaxy of a Quasar at Redshift z=6.42 (2003)
Walter, Fabian, Bertoldi, Frank, Carilli, Chris, Cox, Pierre, Lo, K. Y., Neri, Roberto, ...
Observations of the molecular gas phase in quasar host galaxies provide fundamental constraints on galaxy evolution at the highest redshifts. Molecular gas is the material out of which stars form; it...
Sensitive observations at 1.4 and 250 GHz of z > 5 QSOs (2003)
Petric, A. O., Carilli, C. L., Bertoldi, F., Fan, Xiaohui, Cox, P., Strauss, Michael A., ...
We present 1.4 and 5 GHz observations taken with the Very Large Array (VLA), and observations at 250 GHz obtained with the Max-Planck millimeter bolometer (MAMBO) at the IRAM 30~m telescope, of ten...
Molecular Gas in the Host Galaxy of a Quasar at Redshift z=6.42 (2003)
Walter, Fabian, Bertoldi, Frank, Carilli, Chris, Cox, Pierre, Lo, K. Y., Neri, Roberto, ...
Observations of the molecular gas phase in quasar host galaxies provide fundamental constraints on galaxy evolution at the highest redshifts. Molecular gas is the material out of which stars form; it...
Szkody, Paula, Anderson, Scott F., Schmidt, Gary, Hall, Patrick B., Margon, Bruce, Miceli, Antonino, ...
Probing the evolution of AGN (2003)
Hoyle, Fiona, Vogeley, Michael, Vanden Berk, Dan, Voges, Wolfgang, Fan, Xiaohui
The first data release of the sloan digital sky survey (2003)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
Anderson, Scott F., Voges, Wolfgang, Margon, Bruce, Trümper, Joachim, Agüeros, Marcel A., Boller, Thomas, ...
The first data release of the sloan digital sky survey (2003)
Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The first data release of the Sloan Digital Sky Survey (2003)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its First Data Release. This consists of 2099 deg2 of five-band (u, g, r, i, z) imaging data, 186,240 spectra of...
The first data release of the Sloan Digital Sky Survey (2003)
Abazajian, Kevork N., Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Scott F., Annis, James, ...
The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its First Data Release. This consists of 2099 deg2 of five-band (u, g, r, i, z) imaging data, 186,240 spectra of...
Margon, Bruce, Anderson, Scott F., Harris, Hugh C., Strauss, Michael A., Knapp, G. R., Fan, Xiaohui, ...
We report the discovery of 39 Faint High Latitude Carbon Stars (FHLCs) from Sloan Digital Sky Survey commissioning data. The objects, each selected photometrically and verified spectroscopically,...
An FeLoBAL Binary Quasar (2002)
Gregg, Michael D., Becker, Robert H., White, Richard L., Richards, Gordon T., Chaffee, Fred H., Fan, Xiaohui
In an ongoing infrared imaging survey of quasars at Keck Observatory, we have discovered that the z=1.285 quasar SDSS J233646.2-010732.6 comprises two point sources with a separation of 1.67"....
Spectroscopic Target Selection in the Sloan Digital Sky Survey: The Quasar Sample (2002)
Richards, Gordon T., Fan, Xiaohui, Newberg, Heidi Jo, Strauss, Michael A., Berk, Daniel E. Vanden, Schneider, Donald P., ...
We describe the algorithm for selecting quasar candidates for optical spectroscopy in the Sloan Digital Sky Survey. Quasar candidates are selected via their non-stellar colors in "ugriz" broad-band...
Exploratory Chandra observations of the three highest redshift quasars known (2002)
Brandt, William N., Schneider, Donald P., Fan, Xiaohui, Strauss, Michael A., Gunn, James E., Richards, Gordon T., ...
We report on exploratory Chandra observations of the three highest redshift quasars known (z = 5.82, 5.99, and 6.28), all found in the Sloan Digital Sky Survey. These data, combined with a previous...
The Sloan Digital Sky Survey Quasar Catalog. I. Early data release (2002)
Schneider, Donald P., Richards, Gordon T., Fan, Xiaohui, Hall, Patrick B., Strauss, Michael A., Vanden Berk, Daniel E., ...
We present the first edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of the 3814 objects ( 3000 discovered by the SDSS) in the initial SDSS public data release...
Sloan Digital Sky Survey: Early data release (2002)
Stoughton, Chirs, Lupton, Rpbert H., Bernardi, Mariangela, Blanton, Michael R., Burles, Scott, Castander, Francsico J., ...
The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of 10 6 galaxies, 100,000...
Ivezic, Zeljko, Menou, Kristen, Knapp, Gillian R., Strauss, Michael A., Lupton, Robert H., Vanden Berk, Daniel E., ...
We discuss the optical and radio properties of similar to30,000 FIRST (radio, 20 cm, sensitive to 1 mJy) sources positionally associated within 1."5 with a Sloan Digital Sky Survey (SDSS) (optical,...
z ~ 6 Quasars from the SDSS: Probing the End of the Dark Ages (2002)
Fan, Xiaohui, Narayanan, Vijay K., Strauss, Michael A., Lupton, Robert H., Becker, Robert H., White, Richard L., ...
Sloan Digital Sky Survey: Early Data Release (2002)
Stoughton, Chris, Lupton, Robert H., Bernardi, Mariangela, Blanton, Michael R., Burles, Scott, Castander, Francisco J., ...
VLT Optical and Near-Infrared Observations of the z = 6.28 Quasar SDSS J1030+0524 (2002)
Pentericci, Laura, Fan, Xiaohui, Rix, Hans-Walter, Strauss, Michael A., Narayanan, Vijay K., Richards, Gordon T., ...
Newberg, Heidi Jo, Yanny, Brian, Rockosi, Connie, Grebel, Eva K., Rix, Hans-Walter, Brinkmann, Jon, ...
Unusual Broad Absorption Line Quasars from the Sloan Digital Sky Survey (2002)
Hall, Patrick B., Anderson, Scott F., Strauss, Michael A., York, Donald G., Richards, Gordon T., Fan, Xiaohui, ...
Sloan Digital Sky Survey: early data release (2002)
Stoughton, Chris, Lupton, Robert H., Bernardi, Mariangela, Blanton, Michael R., Burles, Scott M., Castander, Francisco J., ...
The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of ≈ 106 galaxies,...
Sloan Digital Sky Survey: early data release (2002)
Stoughton, Chris, Lupton, Robert H., Bernardi, Mariangela, Blanton, Michael R., Burles, Scott M., Castander, Francisco J., ...
The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of ≈ 106 galaxies,...
Fan, Xiaohui, Narayanan, Vijay K., Strauss, Michael A., White, Richard L., Becker, Robert H., Pentericci, Laura, ...
We study the process of cosmic reionization and estimate the ionizing background in the IGM using the Lyman series absorption in the spectra of the four quasars at 5.7
The Sloan Digital Sky Survey Quasar Catalog I. Early Data Release (2001)
Schneider, Donald P., Richards, Gordon T., Fan, Xiaohui, Hall, Patrick B., Strauss, Michael A., Berk, Daniel E. Vanden, ...
We present the first edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of the 3814 objects (3000 discovered by the SDSS) in the initial SDSS public data release that...
Schneider, Donald P., Knapp, Gillian R., Hawley, Suzanne L., Covey, Kevin R., Fan, Xiaohui, Ramsey, Lawrence W., ...
Low dispersion optical spectra have been obtained with the Hobby-Eberly Telescope of 22 very red objects found in early imaging data from the Sloan Digital Sky Survey. The objects are assigned...
Evidence for Reionization at z ~ 6: Detection of a Gunn-Peterson Trough in a z=6.28 Quasar (2001)
Becker, Robert H., Fan, Xiaohui, White, Richard L., Strauss, Michael A., Narayanan, Vijay K., Lupton, Robert H., ...
We present moderate resolution Keck spectroscopy of quasars at z=5.82, 5.99 and 6.28, discovered by the Sloan Digital Sky Survey (SDSS). We find that the Ly Alpha absorption in the spectra of these...
Fan, Xiaohui, Narayanan, Vijay K., Lupton, Robert H., Strauss, Michael A., Knapp, Gillian R., Becker, Robert H., ...
We present the results from a survey of i-dropout objects selected from ~1550 deg^2 of multicolor imaging data from the Sloan Digital Sky Survey, to search for luminous quasars at z>5.8. Objects with...
Photometric Redshifts of Quasars (2001)
Richards, Gordon T., Weinstein, Michael A., Schneider, Donald P., Fan, Xiaohui, Strauss, Michael A., Berk, Daniel E. Vanden
We demonstrate that the design of the Sloan Digital Sky Survey (SDSS) filter system and the quality of the SDSS imaging data are sufficient for determining accurate and precise photometric redshifts...
A 250 GHz Survey of High Redshift QSOs from the Sloan Digital Sky Survey (2001)
Carilli, C. L., Bertoldi, F., Rupen, M., Fan, Xiaohui, Strauss, Michael A., Menten, K. M., ...
We present observations at 250 GHz (1.2 mm), 43 GHz, and 1.4 GHz of a sample of 41 QSOs at z > 3.7 found in the Sloan Digital Sky Survey. We detect 16 sources with a 250 GHz flux density greater than...
Anderson, Scott F., Fan, Xiaohui, Richards, Gordon T., Schneider, Donald P., Strauss, Michael A., Berk, Daniel E. Vanden, ...
We present results on over 100 high-redshift quasars found in the Sloan Digital Sky Survey (SDSS), using automated selection algorithms applied to SDSS imaging data and with spectroscopic...
Broad Absorption Line Quasars in the Sloan Digital Sky Survey with VLA-FIRST Radio Detections (2001)
Menou, Kristen, Berk, Daniel E. Vanden, Ivezic, Zeljko, Kim, Rita S. J., Knapp, Gillian R., Richards, Gordon T., ...
We present 13 Broad Absorption Line (BAL) quasars, including 12 new objects, which were identified in the Sloan Digital Sky Survey (SDSS) and matched within 2'' to sources in the FIRST radio survey...
Colors of 2625 Quasars at 0 (2000)
Richards, Gordon T., Fan, Xiaohui, Schneider, Donald P., Berk, Daniel E. Vanden, Strauss, Michael A., York, Donald G.
We present an empirical investigation of the colors of quasars in the Sloan Digital Sky Survey (SDSS) photometric system. The sample studied includes 2625 quasars with SDSS photometry. The quasars...
Schneider, Donald P., Fan, Xiaohui, Strauss, Michael A., Gunn, James E., Richards, Gordon T., Hill, Gary J., ...
We report the discovery of 27 quasars with redshifts between 3.58 and 4.49. The objects were identified as high-redshift candidates based on their colors in Sloan Digital Sky Survey commissioning...
Discovery of a Close Pair of z = 4.25 Quasars from the Sloan Digital Sky Survey (2000)
Schneider, Donald P., Fan, Xiaohui, Strauss, Michael A., Gunn, James E., Richards, Gordon T., Knapp, G. R., ...
We report the discovery of a pair of z = 4.25 quasars with a separation of 33 arcseconds. The brighter of the two objects was identified as a high-redshift quasar candidate from Sloan Digital Sky...
The Missing Link: Early Methane ("T") Dwarfs in the Sloan Digital Sky Survey (2000)
Leggett, S. K., Geballe, T. R., Fan, Xiaohui
We report the discovery of three cool brown dwarfs which fall in the effective temperature gap between the latest L dwarfs currently known, with no methane absorption bands in the 1-2.5um range, and...
Dust Emission from High Redshift QSOs (2000)
Carilli, C. L., Bertoldi, F., Menten, K. M., Rupen, M. P., Kreysa, E., Fan, Xiaohui, ...
We present detections of emission at 250 GHz (1.2 mm) from two high redshift QSOs from the Sloan Digital Sky Survey sample using the bolometer array at the IRAM 30m telescope. The sources are SDSSp...
Collaboration, SDSS, Fan, Xiaohui
We report observations of a luminous unresolved object at redshift z = 4.62, with a featureless optical spectrum redward of the Lyman alpha forest region, discovered from Sloan Digital Sky Survey...
L Dwarfs Found in Sloan Digital Sky Survey Commissioning Imaging Data (1999)
Collaboration, SDSS, Fan, Xiaohui
This paper describes the discovery of seven dwarf objects of spectral type `L' (objects cooler than the latest M dwarfs) in commissioning imaging data taken by the Sloan Digital Sky Survey (SDSS)....
Collaboration, SDSS, Fan, Xiaohui
This is the second paper in a series aimed at finding high-redshift quasars from five-color (u'g'r'i'z') imaging data taken along the Celestial Equator by the Sloan Digital Sky Survey (SDSS) during...
Simulation of Stellar Objects in SDSS Color Space (1999)
We present a simulation of the spatial, luminosity and spectral distributions of four types of stellar objects. We simulate: (1) Galactic stars, based on a Galactic structure model, a stellar...
Rodger I. Thompson, Garth Illingworth, Rychard Bouwens, Mark Dickinson, Daniel Eisenstein, Xiaohui Fan, ...
This paper describes the observations and data reduction techniques for the version 2.0 images and catalog of the Near-Infrared Camera and Multi-Object Spectrometer Ultra Deep Field (NICMOS UDF)...
Spectroscopy of Quasar Candidates from SDSS Commissioning Data (1998)
Fan, Xiaohui, Strauss, Michael A., Annis, James, Gunn, James E., Hennessy, Gregory S., Ivezic, Zeljko, ...
The Sloan Digital Sky Survey has obtained images in five broad-band colors for several hundred square degrees. We present color-color diagrams for stellar objects, and demonstrate that quasars are...
Ring structure and warp of NGC5907 -- Interaction with dwarf galaxies (1998)
Shang, Zhaohui, Zheng, Zhongyuan, Brinks, Elias, Chen, Jiansheng, Burstein, David, Su, Hongjun, ...
The edge-on, nearby spiral galaxy NGC5907 has long been used as the prototype of a ``non-interacting'' warped galaxy. We report here the discovery of two interactions with companion dwarf galaxies...
A Lightweight Universe? (1998)
Bahcall, Neta A., Fan, Xiaohui
How much matter is there in the universe? Does the universe have the critical density needed to stop its expansion, or is the universe underweight and destined to expand forever? We show that several...
The Most Massive Distant Clusters: Determining Omega and sigma_8 (1998)
Bahcall, Neta A., Fan, Xiaohui
The existence of the three most massive clusters of galaxies observed so far at z>0.5 is used to constrain the mass density parameter of the universe, Omega, and the amplitude of mass fluctuations,...
An Automated Cluster Finder: the Adaptive Matched Filter (1998)
Kepner, Jeremy, Fan, Xiaohui, Bahcall, Neta, Gunn, James, Lupton, Robert, Xu, Guohong
We describe an automated method for detecting clusters of galaxies in imaging and redshift galaxy surveys. The Adaptive Matched Filter (AMF) method utilizes galaxy positions, magnitudes, and---when...
A Lightweight Universe? (1998)
How much matter is there in the universe? Does the universe have the critical density needed to stop its expansion, or is the universe underweight and destined to expand forever? We show that several...
Determining the Amplitude of Mass Fluctuations in the Universe (1997)
Fan, Xiaohui, Bahcall, Neta A., Cen, Renyue
We present a method for determining the rms mass fluctuations on 8 h^-1 Mpc scale, sigma8. The method utilizes the rate of evolution of the abundance of rich clusters of galaxies. Using the...
Constraining Omega with Cluster Evolution (1997)
Bahcall, Neta A., Fan, Xiaohui, Cen, Renyue
We show that the evolution of the number density of rich clusters of galaxies breaks the degeneracy between Omega (the mass density ratio of the universe) and sigma_{8} (the normalization of the...
Constraining Ω with Cluster Evolution (1997)
Neta A. Bahcall, Xiaohui Fan, Renyue Cen
We show that the evolution of the number density of rich clusters of galaxies breaks the degeneracy between\Omega (the mass density ratio of the universe) and oe 8 (the normalization of the power...
Deep Wide-Field Spectrophotometry of the Open Cluster M67 (1996)
Fan, Xiaohui, Burstein, David, Chen, Jian-sheng, Zhu, Jin, Jiang, Zhaoji, Wu, Hong, ...
We present nine color CCD intermediate-band spectrophotometry of a two square degree field centered on the old open cluster M67, from 3890$\rm \AA$ to nearly 1$\mu$. These observations are taken as a...
Bahcall, Neta A., Fan, Xiaohui
How much matter is there in the universe? Does the universe have the critical density needed to stop its expansion, or is the universe underweight and destined to expand forever? We show that several...
Bahcall, Neta A., Fan, Xiaohui
How much matter is there in the universe? Does the universe have the critical density needed to stop its expansion, or is the universe underweight and destined to expand forever? We show that several...
Fan, Xiaohui, Shi, Leming, Fang, Hong, Harris, Stephen, Perkins, Roger, Tong, Weida
Recent publications have raised concerns about the reliability of microarray technology because of the lack of reproducibility of differentially expressed genes (DEGs) from highly similar studies...