Chapin, Edward L., Pope , Alexandra, Scott , Douglas, Aretxaga, Itziar, Austermann, Jason E., Chary, Ranga-Ram, ...
We present results from a multiwavelength study of 29 sources (false detection probabilities
Mid-IR Luminosities and UV/Optical Star Formation Rates at z < 1.4 (2009)
Salim, Samir, Dickinson, Mark, Rich, R. Michael, Charlot, Stéphane, Lee, Janice C., Schiminovich, David, ...
Ultraviolet (UV) nonionizing continuum and mid-infrared (IR) emission constitute the basis of two widely used star formation (SF) indicators at intermediate and high redshifts. We study 2430 galaxies...
Expanding the Search for Galaxies at z ~ 7-10 with New NICMOS Parallel Fields (2009)
Henry, Alaina L., Siana, Brian, Malkan, Matthew A., Ashby, Matthew L. N., Bridge, Carrie R., Chary, Ranga-Ram, ...
We have carried out a search for galaxies at z ~ 7-10 in ~14.4 arcmin^2 of new NICMOS parallel imaging taken in the Great Observatories Origins Deep Survey (5.9 arcmin^2), the Cosmic Origins Survey...
Mid-IR Luminosities and UV/Optical Star Formation Rates at z (2009)
Salim, Samir, Dickinson, Mark, Rich, R. Michael, Charlot, Stephane, Lee, Janice C., Schiminovich, David, ...
UV continuum and mid-IR emission constitute two widely used star formation indicators at intermediate and high redshifts. We study 2430 galaxies with z10^11 L_sun, yet with little current star...
Cooke, Jeff, Cooray, Asantha, Chary, Ranga-Ram, Bromm, Volker, Cen, Renyue, Ellis, Richard, ...
The cosmic dark ages are the mysterious epoch during which the pristine gas began to condense and ultimately form the first stars. Although these beginnings have long been a topic of theoretical...
Expanding the search for galaxies at z ~7-10 with new NICMOS Parallel Fields (2009)
Henry, Alaina, Siana, Brian, Malkan, Matthew, Ashby, Matthew, Bridge, Carrie, Chary, Ranga-Ram, ...
We have carried out a search for galaxies at z ~ 7-10 in ~14.4 sq. arcmin of new NICMOS parallel imaging taken in the Great Observatories Origins Deep Survey (GOODS, 5.9 sq. arcmin), the Cosmic...
The nature of faint SPITZER-selected dust-obscured galaxies (2008)
Pope, Alexandra, Bussmann, R. Shane, Dey, Arjun, Meger, Nicole, Alexander, David M., Brodwin, Mark, ...
We use deep far-IR, submillimeter, radio, and X-ray imaging and mid-IR spectroscopy to explore the nature of a sample of Spitzer-selected dust-obscured galaxies (DOGs) in GOODS-N. A sample of 79...
Spitzer Observations of the z = 2.73 Lensed Lyman Break Galaxy: MS 1512–cB58 (2008)
Siana, Brian, Teplitz, Harry I., Chary, Ranga-Ram, Colbert, James, Frayer, David T.
We present Spitzer infrared (IR) photometry and spectroscopy of the lensed Lyman break galaxy (LBG) MS 1512–cB58 at z = 2.73. The large (factor ~30) magnification allows for the most detailed IR...
The nature of faint Spitzer-selected dust-obscured galaxies (2008)
Pope, Alexandra, Bussmann, R. Shane, Dey, Arjun, Meger, Nicole, Alexander, David M., Brodwin, Mark, ...
We use deep far-IR, submm, radio and X-ray imaging and mid-IR spectroscopy to explore the nature of a sample of Spitzer-selected dust-obscured galaxies (DOGs) in GOODS-N. A sample of 79 galaxies...
Spitzer Observations of the z=2.73 Lensed Lyman Break Galaxy, MS1512-cB58 (2008)
Siana, Brian, Teplitz, Harry I., Chary, Ranga-Ram, Colbert, James W., Frayer, David T.
We present Spitzer infrared (IR) photometry and spectroscopy of the lensed Lyman break galaxy (LBG), MS1512-cB58 at z=2.73. The large (factor ~30) magnification allows for the most detailed infrared...
Contribution to unresolved infrared fluctuations from dwarf galaxies at redshifts of 2-3 (2008)
Chary, Ranga-Ram, Cooray, Asantha, Sullivan, Ian
In order to understand the origin of clustered anisotropies detected in Spitzer images between 3.6 and 8 μm, we stack the Spitzer IRAC/Great Observatories Origins Deep Survey (GOODS) images at pixel...
Molecular Gas in the z = 1.2 Ultraluminous Merger GOODS J123634.53+621241.3 (2008)
Frayer, David T., Koda, Jin, Pope, Alexandra, Huynh, Minh T., Chary, Ranga-Ram, Scott, Douglas, ...
We report the detection of CO(2→1) emission from the z = 1.2 ultraluminous infrared galaxy (ULIRG) GOODS J123634.53+621241.3 (also known as the submillimeter galaxy GN 26). These observations...
The stellar initial mass function at the epoch of reionization (2008)
I provide estimates of the ultraviolet and visible light luminosity density at z ~ 6 after accounting for the contribution from faint galaxies below the detection limit of deep HST and Spitzer...
A Large Population of High Redshift Galaxy Clusters in the IRAC Shallow Cluster Survey (2008)
Brodwin, Mark, Eisenhardt, Peter R., Gonzalez, Anthony H., Stanford, Adam, Stern, Daniel, Moustakas, Leonidas A., ...
We have identified 335 galaxy cluster and group candidates spanning 01, a wider range of formation histories is needed, but higher formation redshifts (i.e. z_f \ge 4-5) are favored for most...
Molecular Gas in the z=1.2 Ultraluminous Merger GOODS J123634.53+621241.3 (2008)
Frayer, David T., Koda, Jin, Pope, Alexandra, Huynh, Minh T., Chary, Ranga-Ram, Scott, Douglas, ...
We report the detection of CO(2-1) emission from the z=1.2 ultraluminous infrared galaxy (ULIRG) GOODS J123634.53+621241.3 (also known as the sub-millimeter galaxy GN26). These observations represent...
The nature of faint Spitzer-selected dust-obscured galaxies (2008)
Pope, Alexandra, Bussmann, R. Shane, Dey, Arjun, Meger, Nicole, Alexander, David M., Brodwin, Mark, ...
We use deep far-IR, submillimeter, radio, and X-ray imaging and mid-IR spectroscopy to explore the nature of a sample of Spitzer-selected dust-obscured galaxies (DOGs) in GOODS-N. A sample of 79...
The Stellar Initial Mass Function at the Epoch of Reionization (2007)
I provide estimates of the ultraviolet and visible light luminosity density at z~6 after accounting for the contribution from faint galaxies below the detection limit of deep Hubble and Spitzer...
Contribution to Unresolved Infrared Fluctuations from Dwarf Galaxies at Redshifts of 2-3 (2007)
Chary, Ranga-Ram, Cooray, Asantha, Sullivan, Ian
In order to understand the origin of clustered anisotropies detected in Spitzer images between 3.6 and 8 microns, we stack the Spitzer IRAC/Great Observatories Origins Deep Survey (GOODS) images at...
Mid-Infrared Spectral Diagnosis of Submillimeter Galaxies (2007)
Pope, Alexandra, Chary, Ranga-Ram, Alexander, David M., Armus, Lee, Dickinson, Mark, Elbaz, David, ...
We present deep mid-infrared spectroscopy with the Spitzer Space Telescope of 13 submillimeter galaxies (SMGs) in the Great Observatories Origins Deep Survey North (GOODS-N) field. We find strong...
Huynh, Minh T., Frayer, David T., Mobasher, Bahram, Dickinson, Mark, Chary, Ranga-Ram, Morrison, Glenn
We present the IR luminosity function derived from ultradeep 70 μm imaging of the GOODS-North field. The 70 μm observations are longward of the PAH and silicate features which complicate work in...
Local readout enhancement for detuned signal-recycling interferometers (2007)
Pullen, Anthony R., Chary, Ranga-Ram, Kamionkowski, Marc
We search data from the Energetic Gamma Ray Experiment Telescope (EGRET) for a gamma-ray line in the energy range 0.1–10 GeV from the 10°×10° region around the Galactic center. Our null results...
Search with EGRET for a gamma ray line from the Galactic center (2007)
Pullen, Anthony R., Chary, Ranga-Ram, Kamionkowski, Marc
We search data from the Energetic Gamma Ray Experiment Telescope (EGRET) for a gamma-ray line in the energy range 0.1–10 GeV from the 10°×10° region around the Galactic center. Our null results...
Chary, Ranga-Ram, Berger, Edo, Cowie, Len
We present deep Spitzer 3.6 micron observations of three z~5 GRB host galaxies. Our observations reveal that z~5 GRB hosts are a factor of 3 less luminous than the median rest-frame V-band luminosity...
Hubble Ultra Deep Field-JD2: Mid-Infrared Evidence for a z ~ 2 Luminous Infrared Galaxy (2007)
Chary, Ranga-Ram, Teplitz, Harry I., Dickinson, Mark E., Koo, David C., Le Floc'h, Emeric, Marcillac, Delphine, ...
The Hubble Ultra Deep Field source JD2 presented in Mobasher et al. is an unusual galaxy that is very faint at all wavelengths shortward of 1.1 μm. Photometric redshift fits to data between 0.4 and...
Huynh, Minh T., Frayer, David T., Mobasher, Bahram, Dickinson, Mark, Chary, Ranga-Ram, Morrison, Glenn
We present the IR luminosity function derived from ultra-deep 70 micron imaging of the GOODS-North field. The 70 micron observations are longward of the PAH and silicate features which complicate...
HUDF-JD2: Mid-infrared Evidence for a z~2 Luminous Infrared Galaxy (2007)
Chary, Ranga-Ram, Teplitz, Harry I., Dickinson, Mark E., Koo, David C., Floc'h, Emeric Le, Marcillac, Delphine, ...
The Hubble Ultra Deep Field source JD2 presented in Mobasher et al. (2005) is an unusual galaxy that is very faint at all wavelengths shortward of 1.1 micron. Photometric redshift fits to data at 0.4...
Insights into Galaxy Evolution from Mid-infrared Wavelengths (2006)
In this paper, I have attempted to highlight key results from deep extragalactic surveys at mid-infrared wavelengths. I discuss advances in our understanding of dust enshrouded star-formation and AGN...
Arp102B: An ADAF and a Torus ? (2006)
Arp102B is a nearby radio galaxy which displays the presence of double peaked Balmer emission lines. Sub-arcsec Keck mid-infrared imaging and Spitzer spectroscopy reveal a spatially compact...
IR Background Anisotropies in Spitzer GOODS images and constraints on first galaxies (2006)
Cooray, Asantha, Sullivan, Ian, Chary, Ranga-Ram, Bock, James J., Dickinson, Mark, Ferguson, Henry C., ...
We describe the angular power spectrum of unresolved 3.6 micron IR light in Spitzer GOODS fields. The amplitude of the anisotropy spectrum decreases with decreasing flux threshold to which resolved...
Search with EGRET for a Gamma Ray Line from the Galactic Center (2006)
Pullen, Anthony R., Chary, Ranga-Ram, Kamionkowski, Marc
We search data from the Energetic Gamma Ray Experiment Telescope (EGRET) for a gamma-ray line in the energy range 0.1-10 GeV from the 10 X 10 degree region around the Galactic center. Our null...
Clustering of the IR Background Light with Spitzer: Contribution from Resolved Sources (2006)
Sullivan, Ian, Cooray, Asantha, Chary, Ranga-Ram, Bock, James J., Brodwin, Mark, Brown, Michael J. I., ...
We describe the angular power spectrum of resolved sources at 3.6 microns (L-band) in Spitzer imaging data of the GOODS HDF-N, the GOODS CDF-S, and the NDWFS Bootes field in several source magnitude...
Pope, Alexandra, Scott, Douglas, Dickinson, Mark, Chary, Ranga-Ram, Morrison, Glenn, Borys, Colin, ...
We present spectral energy distributions (SEDs), Spitzer colours, and infrared (IR) luminosities for 850-μm selected galaxies in the Great Observatories Origins Deep Survey Northern (GOODS-N) field....
Stern, Daniel, Chary, Ranga-Ram, Eisenhardt, Peter, Moustakas, Leonidas
We present Spitzer Space Telescope observations of the well-studied extremely red objects (EROs) HR10 and LBDS53W091 from 3.6 to 160 microns. These galaxies are the prototypes of the two primary...
Pope, Alexandra, Scott, Douglas, Dickinson, Mark, Chary, Ranga-Ram, Morrison, Glenn, Borys, Colin, ...
We present SEDs, Spitzer colours, and IR luminosities for 850 micron selected galaxies in the GOODS-N field. Using the deep Spitzer Legacy images and new data and reductions of the VLA-HDF radio...
Using Spitzer to probe the nature of submillimetre galaxies in GOODS-N (2006)
Pope, Alexandra, Scott, Douglas, Dickinson, Mark, Chary, Ranga-Ram, Morrison, Glenn, Borys, Colin, ...
How does the submm galaxy population detected by SCUBA fit into galaxy evolution? How do these rare starbursting systems, which contribute significantly to high redshift star-formation, relate to...
Spitzer Number Counts of AGN in the GOODS fields (2005)
Treister, Ezequiel, Urry, C. Megan, Van Duyne, Jeffrey, Dickinson, Mark, Chary, Ranga-Ram, Alexander, David M., ...
We present mid-infrared observations of AGN in the GOODS fields, performed with the Spitzer Space Telescope. These are the deepest infrared and X-ray fields to date and cover a total area of ~0.1...
Spitzer Constraints on the z=6.56 Galaxy Lensed by Abell 370 (2005)
Chary, Ranga-Ram, Stern, Daniel, Eisenhardt, Peter
We report on Spitzer IRAC observations of the spectroscopically confirmed z=6.56 lensed Ly-alpha emitting source HCM 6A which was found behind the cluster Abell 370. Detection of the source at 3.6...
New Views into High Redshift Star-formation from GOODS (2005)
The GOODS-North field centered around the historical Hubble Deep Field-North provides one of the richest multiwavelength datasets compiled, spanning radio to X-ray frequencies, for studying the...
Yan, Haojing, Dickinson, Mark, Stern, Daniel, Eisenhardt, Peter R. M., Chary, Ranga-Ram, Giavalisco, Mauro, ...
We use data from the first epoch of observations with the IRAC/Spitzer for the GOODS to detect and study a collection of LBGs at z ~ 6 to 5 in the HUDF, six of which have spectroscopic confirmation....
Yan, Haojing, Dickinson, Mark, Eisenhardt, Peter R. M., Ferguson, Henry C., Grogin, Norman A., Paolillo, Maurizio, ...
Using early data from the Infrared Array Camera (IRAC) on the Spitzer Space Telescope, taken for the Great Observatories Origins Deep Survey (GOODS), we identify and study objects that are...
High Redshift Supernova Rates (2004)
Dahlen, Tomas, Strolger, Louis-Gregory, Riess, Adam G., Mobasher, Bahram, Chary, Ranga-Ram, Conselice, Christopher J., ...
We use a sample of 42 supernovae detected with the Advanced Camera for Surveys on-board the Hubble Space Telescope as part of the Great Observatories Origins Deep Survey to measure the rate of core...
Unveiling the Progenitors of GRBs through Observations of their Host Galaxies (2002)
I discuss the possibility of differentiating between popular models for gamma-ray bursts by using multiwavelength observations to constrain the characteristics of their host galaxies, in particular...
The Location of the Nucleus and the Morphology of Emission-Line Regions in NGC 1068 (2001)
Thompson, Rodger I., Chary, Ranga-Ram, Corbin, Michael R., Epps, Harland
This paper presents NICMOS images of the nucleus and emission line regions in NGC 1068. The location of the nucleus relative to the emission line features is established and the physics underlying...