Villforth, C., Nilsson, K., Heidt, J., Takalo, L. O., Pursimo, T., Berdyugin, A., ...
(Abridged) OJ287 is a BL Lac object that has shown double-peaked bursts at regular intervals of ~12 yr during the last ~40 yr. We analyse optical photopolarimetric monitoring data from 2005-2009,...
Multi-ring structure of the eclipsing disk in EE Cep - possible planets? (2009)
Galan, C., Mikolajewski, M., Tomov, T., Swierczynski, E., Wiecek, M., Brozek, T., ...
The photometric and spectroscopic observational campaign organized for the 2008/9 eclipse of EE Cep revealed features, which indicate that the eclipsing disk in the EE Cep system has a multi-ring...
Jean-Marie Krzesinski1, Eric P Cohen21Division of Nephrology/Transplantation, University of Liège – Sart Tilman, Belgium; 2Nephrology Division, Medical College of Wisconsin, Milwaukee,...
Desmet, M., Briquet, M., Thoul, A., Zima, W., De Cat, P., Handler, G., ...
We present the results of a spectroscopic multisite campaign for the beta Cephei star 12 (DD) Lacertae. Our study is based on more than thousand high-resolution high S/N spectra gathered with 8...
New Pulsating DB White Dwarf Stars from the Sloan Digital Sky Survey (2008)
Nitta, A., Kleinman, S. J., Krzesinski, J., Kepler, S. O., Metcalfe, T. S., Mukadam, Anjum S., ...
We are searching for new He atmosphere white dwarf pulsators (DBVs) based on the newly found white dwarf stars from the spectra obtained by the Sloan Digital Sky Survey. DBVs pulsate at hotter...
Sullivan, WET Collaboration: D. J., Metcalfe, T. S., O'Donoghue, D., Winget, D. E., Kilkenny, D., Van Wyk, F., ...
We present the analysis of a total of 177h of high-quality optical time-series photometry of the helium atmosphere pulsating white dwarf (DBV) EC 20058-5234. The bulk of the observations (135h) were...
The pulsation modes of the pre-white dwarf PG 1159-035 (2008)
Costa, J. E. S., Kepler, S. O., Winget, D. E., O'Brien, M. S., Kawaler, S. D., Costa, A. F. M., ...
Context. PG 1159-035, a pre-white dwarf with T_(eff) ≃ 140 000 K, is the prototype of both two classes: the PG 1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-035...
Lessons learned from Sloan Digital Sky Survey operations (2008)
Kleinman, S. J., Gunn, J. E., Boroski, B., Long, D., Snedden, S., Nitta, A., ...
Astronomy is changing. Large projects, large collaborations, and large budgets are becoming the norm. The Sloan Digital Sky Survey (SDSS) is one example of this new astronomy, and in operating the...
The pulsation modes of the pre-white dwarf PG 1159-035 (2007)
Costa, J. E. S., Kepler, S. O., Winget, D. E., O'Brien, M. S., Kawaler, S. D., Costa, A. F. M., ...
PG 1159-035, a pre-white dwarf with T_eff=140,000 K, is the prototype of both two classes: the PG1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-035 photometric data...
A MaxBCG Catalog of 13,823 Galaxy Clusters from the Sloan Digital Sky Survey (2007)
Koester, BP, McKay, TA, Annis, J, Wechsler, RH, Evrard, AE, Bleem, L, ...
We present a catalog of galaxy clusters selected using the maxBCG red-sequence method from Sloan Digital Sky Survey photometric data. This catalog includes 13,823 clusters with velocity dispersions...
An Improved Photometric Calibration of the Sloan Digital Sky Survey Imaging Data (2007)
Padmanabhan, N., Schlegel, D. J., Finkbeiner, D. P., Barentine, J. C., Blanton, M. R., Brewington, H. J., ...
We present an algorithm to photometrically calibrate wide field optical imaging surveys, that simultaneously solves for the calibration parameters and relative stellar fluxes using overlapping...
The Hercules-Aquila Cloud (2007)
Belokurov, V., Evans, N. W., Bell, E. F., Irwin, M. J., Hewett, P. C., Koposov, S., ...
We present evidence for a substantial overdensity of stars in the direction of the constellations of Hercules and Aquila. The Cloud is centered at a Galactic longitude of about 40 degrees and extends...
SDSS spectroscopic survey of stars (2007)
Ivezic, Z., Schlegel, D., Uomoto, A., Bond, N., Beers, T., Prieto, C. Allende, ...
In addition to optical photometry of unprecedented quality, the Sloan Digital Sky Survey (SDSS) is also producing a massive spectroscopic database. We discuss determination of stellar parameters,...
A MaxBCG Catalog of 13,823 Galaxy Clusters from the Sloan Digital Sky Survey (2007)
Koester, B. P., McKay, T. A., Annis, J., Wechsler, R. H., Evrard, A., Bleem, L., ...
We present a catalog of galaxy clusters selected using the maxBCG redsequence method from Sloan Digital Sky Survey photometric data. This catalog includes 13,823 clusters with velocity dispersions...
Discovery of an Unusual Dwarf Galaxy in the Outskirts of the Milky Way (2007)
Irwin, M. J., Belokurov, V., Evans, N. W., Ryan-Weber, E. V., De Jong, J. T. A., Koposov, S., ...
In this Letter, we announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The...
A MaxBCG catalog of 13,823 galaxy clusters from the sloan digital sky survey (2007)
Koester, B. P., Mckay, T. A., Annis, J., Wechsler, R. H., Evrard, A., Bleem, L., ...
Discovery of an unusual dwarf galaxy in the outskirts of the Milky Way (2007)
Irwin, M. J., Belokurov, V., Evans, N. W., Ryan-Weber, E. V., De Jong, J. T. A., Koposov, S., ...
We announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude...
Cats and dogs, hair and a hero: a quintet of New Milky Way companions (2007)
Belokurov, V., Zucker, D. B., Evans, N. W., Kleyna, J. T., Koposov, S., Hodgkin, S. T., ...
We present five new satellites of the Milky Way discovered in Sloan Digital Sky Survey (SDSS) imaging data, four of which were followed up with either the Subaru or the Isaac Newton Telescopes. They...
The Hercules-Aquila cloud (2007)
Belokurov, V., Evans, N. W., Bell, E. F., Irwin, M. J., Hewett, P. C., Koposov, S., ...
We present evidence for a substantial overdensity of stars in the direction of the constellations of Hercules and Aquila. The cloud is centered at a Galactic longitude of l~40deg and extends above...
Discovery of an unusual dwarf galaxy in the outskirts of the Milky Way (2007)
Irwin, M. J., Belokurov, V., Evans, N. W., Ryan-Weber, E. V., De Jong, J. T. A., Koposov, S., ...
We announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude...
Discovery of an unusual dwarf galaxy in the outskirts of the Milky Way (2007)
Irwin, M. J., Belokurov, V., Evans, N. W., Ryan-Weber, E. V., De Jong, J. T. A., Koposov, S., ...
We announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude...
Discovery of an unusual dwarf galaxy in the outskirts of the Milky Way (2007)
Irwin, M. J., Belokurov, V., Evans, N. W., Ryan-Weber, E. V., De Jong, J. T. A., Koposov, S., ...
We announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude...
Spectral analyses of 16 DAO white dwarfs from the Sloan Digital Sky Survey (2006)
Huegelmeyer, S. D., Dreizler, S., Rauch, T., Krzesinski, J.
We present a spectral analysis of 16 DAO white dwarfs from the Sloan Digital Sky Survey Data Release 4. With our NLTE H+He model grid, we derived photospheric parameters for these objects. We compare...
Huegelmeyer, S. D., Dreizler, S., Werner, K., Krzesinski, J., Nitta, A., Kleinman, S. J.
The Sloan Digital Sky Survey has provided spectra of a large number of new PG 1159 stars and DO white dwarfs. This increase in known hot H-deficient compact objects significantly improves the...
Cats and Dogs, Hair and A Hero: A Quintet of New Milky Way Companions (2006)
Belokurov, V., Zucker, D. B., Evans, N. W., Kleyna, J. T., Koposov, S., Hodgkin, S. T., ...
We present five new satellites of the Milky Way discovered in Sloan Digital Sky Survey (SDSS) imaging data, four of which were followed-up with either the Subaru or the Isaac Newton Telescopes. They...
A Curious New Milky Way Satellite in Ursa Major (2006)
Zucker, D. B., Belokurov, V., Evans, N. W., Kleyna, J. T., Irwin, M. J., Wilkinson, M. I., ...
In this Letter, we study a localized stellar overdensity in the constellation of Ursa Major, first identified in Sloan Digital Sky Survey (SDSS) data and subsequently followed up with Subaru imaging....
Huegelmeyer, S. D., Dreizler, S., Homeier, D., Krzesinski, J., Werner, K., Nitta, A., ...
Context: The Sloan Digital Sky Survey Data Release 4 has provided spectra of several new PG 1159 stars and DO white dwarfs. This increase in known hot H-deficient compact objects significantly...
A New Milky Way Dwarf Satellite in Canes Venatici (2006)
Zucker, D. B., Belokurov, V., Evans, N. W., Wilkinson, M. I., Irwin, M. J., Sivarani, T., ...
In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the North Galactic Cap using...
A Faint New Milky Way Satellite in Bootes (2006)
Belokurov, V., Zucker, D. B., Evans, N. W., Wilkinson, M. I., Irwin, M. J., Hodgkin, S., ...
In this Letter, we announce the discovery of a new satellite of the Milky Way in the constellation of Bootes at a distance of 60 kpc. It was found in a systematic search for stellar overdensities in...
Berlind, Andreas A., Frieman, Joshua A., Weinberg, David H., Blanton, Michael R., Warren, Michael S., Abazajian, Kevork, ...
We identify galaxy groups and clusters in volume-limited samples of the SDSS redshift survey, using a redshift-space friends-of-friends algorithm. We optimize the friends-of-friends linking lengths...
A new Milky Way dwarf satellite in Canes Venatici (2006)
Zucker, D. B., Belokurov, V., Evans, N. W., Wilkinson, M. I., Irwin, M. J., Sivarani, T., ...
In this Letter, we announce the discovery of a new dwarf satellite of the Milky Way, located in the constellation Canes Venatici. It was found as a stellar overdensity in the north Galactic cap using...
A curious Milky Way satellite in Ursa Major (2006)
Zucker, D. B., Belokurov, V., Evans, N. W., Kleyna, J. T., Irwin, M. J., Wilkinson, M. I., ...
In this Letter, we study a localized stellar overdensity in the constellation of Ursa Major, first identified in Sloan Digital Sky Survey (SDSS) data and subsequently followed up with Subaru imaging....
SDSS spectroscopic survey of stars (2006)
Ivezic, Z., Schlegel, D., Uomoto, A., Bond, N., Beers, T., Allende Prieto, C., ...
In addition to optical photometry of unprecedented quality, the Sloan Digital Sky Survey (SDSS) is also producing a massive spectroscopic database. We discuss determination of stellar parameters,...
A faint new Milky Way satellite in Bootes (2006)
Belokurov, V., Zucker, D. B., Evans, N. W., Wilkinson, M. I., Irwin, M. J., Hodgkin, S., ...
We announce the discovery of a new satellite of the Milky Way in the constellation of Bootes at a distance of ~60 kpc. It was found in a systematic search for stellar overdensities in the north...
Candidate spectroscopic binaries in the Sloan Digital Sky Survey (2005)
Pourbaix, D., Knapp, G. R., Szkody, P., Ivezic, Z., Kleinman, S. J., Long, D., ...
We have examined the radial velocity data for stars spectroscopically observed by the Sloan Digital Sky Survey (SDSS) more than once to investigate the incidence of spectroscopic binaries, and to...
Spectral analyses of DO white dwarfs and PG1159 stars from the Sloan Digital Sky Survey (2005)
Huegelmeyer, S. D., Dreizler, S., Werner, K., Krzesinski, J., Nitta, A., Kleinman, S. J.
We present a model atmosphere analysis of ten new DO white dwarfs and five new PG 1159 stars discovered in the Sloan Digital Sky Survey DR1, DR2 and DR3. This is a significant increase in the number...
Schmidt, G. D., Szkody, P., Vanlandingham, K. M., Anderson, S. F., Barentine, J. C., Brewington, H. J., ...
Discoveries of two new white dwarf plus M star binaries with striking optical cyclotron emission features from the Sloan Digital Sky Survey (SDSS) brings to six the total number of X-ray faint,...
The Fall 2004 SDSS Supernova Survey (2005)
Sako, Masao, Romani, Roger, Frieman, Josh, Adelman-McCarthy, Jen, Becker, Andrew, DeJongh, Fritz, ...
In preparation for the Supernova Survey of the Sloan Digital Sky Survey (SDSS) II, a proposed 3-year extension to the SDSS, we have conducted an early engineering and science run during the fall of...
The Sloan Digital Sky Survey Quasar Catalog III. Third Data Release (2005)
Schneider, D. P., Hall, P. B., Richards, G. T., Berk, D. E. Vanden, Anderson, S. F., Fan, X., ...
We present the third edition of the Sloan Digital Sky Survey (SDSS) Quasar Catalog. The catalog consists of the 46,420 objects in the SDSS Third Data Release that have luminosities larger than M_i =...
Spectral Analyses of DO White Dwarfs and PG1159 Stars from the Sloan Digital Sky Survey (2005)
Huegelmeyer, S. D., Dreizler, S., Werner, K., Nitta, A., Kleinman, S. J., Krzesinski, J.
SDSS (DR1 and DR2) has recently proposed 7 new DO white dwarfs as well as 6 new PG1159 stars. This is a significant increase in the known number of DOs and PG1159 stars. Our spectral analyses provide...
Kanaan, A., Nitta, A., Winget, D.E., Kepler, S.O., Montgomery, M.H., Metcalfe, T.S., ...
The definitive version of this paper is available from www.aanda.org
SDSS Data Management and Photometric Quality Assessment (2004)
Ivezic, Z., Lupton, R. H., Schlegel, D., Boroski, B., Adelman-McCarthy, J., Yanny, B., ...
We summarize the Sloan Digital Sky Survey data acquisition and processing steps, and describe runQA, a pipeline designed for automated data quality assessment. In particular, we show how the position...
Aerts, C ; JFA; CORA, De Cat, P, Handler, G, Heiter, U, Balona, LA, Krzesinski, J, ...
We undertook a multisite spectroscopic campaign for the beta Cephei star nu Eridani. A total of 2294 high-resolution spectra were obtained from telescopes at 11 different observatories around the...
Chyzy, K., Jamrozy, M., Kleinman, S. J., Krzesinski, J., Machalski, J., McMillan, R., ...
The redshifts of faint radio galaxies identified with giant radio source candidates selected from the sample of Machalski et al. (2001) have been measured. Given the redshift, the projected linear...
An Initial Survey of White Dwarfs in the Sloan Digital Sky Survey (2003)
Harris, H. C., Liebert, J., Kleinman, S. J., Nitta, A., Anderson, S. F., Knapp, G. R., ...
An initial assessment is made of white dwarf and hot subdwarf stars observed in the Sloan Digital Sky Survey. In a small area of sky (190 square degrees), observed much like the full survey will be,...
The Everchanging Pulsating White Dwarf GD358 (2003)
Kepler, S. O., Nather, R. E., Winget, D. E., Nitta, A., Kleinman, S. J., Metcalfe, T., ...
We report 323 hours of nearly uninterrupted time series photometric observations of the DBV star GD 358 acquired with the Whole Earth Telescope (WET) during May 23rd to June 8th, 2000. We acquired...
Sloan Digital Sky Survey: Early data release (2002)
Stoughton, C., Lupton, R. H., Bernardi, M., Blanton, M. R., Burles, S., Castander, F. 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...
LOTIS, Super-LOTIS, SDSS and Tautenburg Observations of GRB 010921 (2001)
Park, H. S., Williams, G. G., Hartmann, D. H., Lamb, D. Q., Lee, B. C., Tucker, D. L., ...
We present multi-instrument optical observations of the High Energy Transient Explorer (HETE-2)/Interplanetary Network (IPN) error box of GRB 010921. This event was the first gamma ray burst (GRB)...
Breger, M, Handler, G, Garrido, R, Audard, N, Zima, Wolfgang; U0052006 ;, Paparo, M, ...
The evolved delta Scuti variable 4 CVn was observed photometrically for 53 nights on three continents. We found a total of 34 significant and 1 probable simultaneously excited frequencies. Of these,...
Understanding the Cool DA White Dwarf, G29-38 (1997)
Kleinman, S. J., Nather, R. E., Winget, D. E., Clemens, J. C., Bradley, P. A., Kanaan, A., ...
The white dwarfs are promising laboratories for the study of cosmochronology and stellar evolution. Through observations of the pulsating white dwarfs, we can measure their internal structures and...
The variability of a newly discovered gamma Doradus star, HD 108100 (1997)
Breger, M, Handler, G, Garrido, R, Audard, N, Beichbuchner, F, Zima, Wolfgang; U0052006 ;, ...
A coordinated photometric campaign at five observatories to monitor the suspected brightness variations of the early-l; star HD 108100 was undertaken by the DSN (Delta Scuti Network) and WET (Whole...