Infrared Luminosities and Dust Properties of z ≈ 2 Dust-obscured Galaxies (2009)
Bussmann, R. S., Dey, Arjun, Borys, C., Desai, V., Jannuzi, B. T., Le Floc'h, E., ...
We present SHARC-II 350 μm imaging of twelve 24 μm bright (F_(24 μm) > 0.8 mJy) Dust-Obscured Galaxies (DOGs) and Combined Array for Research in Millimeter-wave Astronomy (CARMA) 1 mm imaging of a...
A Physical Model for z~2 Dust Obscured Galaxies (2009)
Narayanan, Desika, Dey, Arjun, Hayward, Christopher, Cox, Thomas J., Bussmann, R. Shane, Brodwin, Mark, ...
We present a physical model for the origin of z~2 Dust-Obscured Galaxies (DOGs), a class of high-redshift ULIRGs selected at 24 micron which are particularly optically faint (F24/FR>1000). By...
Infrared surveys have discovered a signi cant population of bright (K<19) extremely red (R K> 6) objects. Little is known about the properties of these objects on account of their optical...
Infrared Luminosities and Dust Properties of z ~ 2 Dust-Obscured Galaxies (2009)
Bussmann, R. S., Dey, Arjun, Borys, C., Desai, V., Jannuzi, B. T., Floc'h, E. Le, ...
We present SHARC-II 350um imaging of twelve 24um-bright (F_24um > 0.8 mJy) Dust-Obscured Galaxies (DOGs) and CARMA 1mm imaging of a subset of 2 DOGs, all selected from the Bootes field of the NOAO...
Kate Brand, Arjun Dey, Buell T. Jannuzi, Christopher S. Kochanek, Almus T. Kenter, ...
The XBoötes Survey is a 5-ks Chandra survey of the Boötes Field of the NOAO Deep Wide-Field Survey (NDWFS). This survey is unique in that it is the largest (9.3 deg2), contiguous region imaged in...
Strong polycyclic aromatic hydrocarbon emission from z ≈ 2 ULIRGs (2009)
Desai, Vandana, Soifer, B. T., Dey, Arjun, Le Floc'h, Emeric, Armus, Lee, Brand, Kate, ...
Using the Infrared Spectrograph on board the Spitzer Space Telescope, we present low-resolution (64 < λ/δλ < 124), mid-infrared (20-38 μm) spectra of 23 high-redshift ULIRGs detected in the...
Active Galactic Nuclei and the Truncation of Star Formation in K+A Galaxies (2009)
Brown, Michael J. I., Moustakas, John, Caldwell, Nelson, Palamara, David, Cool, Richard J., Dey, Arjun, ...
We have searched for active galactic nuclei (AGNs) in K+A galaxies, using multiwavelength imaging and spectroscopy in the Bootes field of the NOAO Deep Wide-Field Survey. The K+A galaxies, which have...
Melbourne, J., Bussman, R. S., Brand, K., Desai, V., Armus, L., Dey, Arjun, ...
A simple optical to mid-IR color selection, R – [24]>14, i.e., f_ν(24 μm)/f_ν(R) ≳ 1000, identifies highly dust obscured galaxies (DOGs) with typical redshifts of z ~ 2 ± 0.5. Extreme mid-IR...
The Pedigrees of DOGs (Dust-Obscured Galaxies) (2009)
Dey, Arjun, Collaboration, The NDWFS/MIPS
A simple mid-infrared-to-optical color criterion of R-[24]>14 Vega mag results in a robust selection of approximately half of the redshift 2 ultraluminous infrared galaxy (ULIRG) population. These...
Strong PAH Emission from z~2 ULIRGs (2009)
Desai, Vandana, Soifer, B. T., Dey, Arjun, Floc'h, Emeric Le, Armus, Lee, Brand, Kate, ...
Using the Infrared Spectrograph on board the Spitzer Space Telescope, we present low-resolution (64 < lambda / dlambda < 124), mid-infrared (20-38 micron) spectra of 23 high-redshift ULIRGs detected...
Hickox, Ryan C., Jones, Christine, Forman, William R., Murray, Stephen S., Kochanek, Christopher S., Eisenstein, Daniel, ...
We explore the connection between different classes of active galactic nuclei (AGNs) and the evolution of their host galaxies, by deriving host galaxy properties, clustering, and Eddington ratios of...
Melbourne, J., Bussman, S., Brand, K., Desai, V., Armus, L., Dey, Arjun, ...
A simple optical to mid-IR color selection, R-[24] > 14, i.e. f_nu(24) / f_nu(R) > 1000, identifies highly dust obscured galaxies (DOGs) with typical redshifts of z~2 +/- 0.5. Extreme mid-IR...
BigBOSS: The Ground-Based Stage IV Dark Energy Experiment (2009)
Schlegel, David J., Bebek, Chris, Heetderks, Henry, Ho, Shirley, Lampton, Michael, Levi, Michael, ...
The BigBOSS experiment is a proposed DOE-NSF Stage IV ground-based dark energy experiment to study baryon acoustic oscillations (BAO) and the growth of structure with an all-sky galaxy redshift...
Evolution of the Lyman-alpha Halos around High-Redshift Radio Galaxies (2009)
Zirm, Andrew W., Dey, Arjun, Dickinson, Mark, Norman, Colin J.
We have obtained the first constraints on extended Ly-alpha emission at z ~ 1 in a sample of five radio galaxies. We detect Ly-alpha emission from four of the five galaxies. The Ly-alpha luminosities...
Bell, Eric, Davis, Marc, Dey, Arjun, Van Dokkum, Pieter, Ellis, Richard, Eisenstein, Daniel, ...
Over the last decade optical spectroscopic surveys have characterized the low redshift galaxy population and uncovered populations of star-forming galaxies back to z ~ 7. This work has shown that the...
The Star Formation and Nuclear Accretion Histories of Normal Galaxies in the AGES Survey (2009)
Watson, Casey R., Kochanek, Christopher S., Forman, William R., Hickox, Ryan C., Jones, Christine J., Brown, Michael J. I., ...
We combine IR, optical and X-ray data from the overlapping, 9.3 square degree NOAO Deep Wide-Field Survey (NDWFS), AGN and Galaxy Evolution Survey (AGES), and XBootes Survey to measure the X-ray...
The origin of the 24 μm excess in red galaxies (2009)
Brand, Kate, Moustakas, John, Armus, Lee, Assef, Roberto J., Brown, Michael J. I., Cool, Richard R., ...
Observations with the Spitzer Space Telescope have revealed a population of red sequence galaxies with a significant excess in their 24 μm emission compared to what is expected from an old stellar...
Hubble Space Telescope Morphologies of z ~ 2 Dust Obscured Galaxies. I. Power-Law Sources (2009)
Bussmann, R. S., Dey, Arjun, Lotz, J., Armus, L., Brand, K., Brown, M. J. I., ...
We present high-spatial resolution optical and near-infrared imaging obtained using the ACS, WFPC2, and NICMOS cameras aboard the Hubble Space Telescope of 31 24 μm bright z ≈ 2 Dust Obscured...
Spitzer 70/160 μm observations of high-redshift ULIRGs and HyLIRSs in the Boötes field (2009)
Tyler, Krystal D., Le Floc'h, Emeric, Rieke, George H., Dey, Arjun, Desai, Vandana, Brand, Kate, ...
We present new 70 and 160 μm observations of a sample of extremely red (R – [24] ≳ 15 mag), mid-infrared bright, high-redshift (1.7 ≾ z ≾ 2.8) galaxies. All targets detected in the...
Hickox, Ryan C., Jones, Christine, Forman, William R., Murray, Stephen S., Kochanek, Christopher S., Eisenstein, Daniel, ...
We explore the connection between different classes of active galactic nuclei (AGNs) and the evolution of their host galaxies, by deriving host galaxy properties, clustering, and Eddington ratios of...
The Cosmic Evolution of AGN in galaxy clusters (2009)
Galametz, Audrey, Stern, Daniel, Eisenhardt, Peter R. M., Brodwin, Mark, Brown, Michael J. I., Dey, Arjun, ...
We present the surface density of luminous active galactic nuclei (AGN) associated with a uniformly selected galaxy cluster sample identified in the 8.5 square degree Bootes field of the NOAO Deep...
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...
HST Morphologies of z~2 Dust Obscured Galaxies I: Power-law Sources (2008)
Bussmann, R. S., Dey, Arjun, Lotz, J., Armus, L., Brand, K., Brown, M. J. I., ...
We present high spatial resolution optical and near-infrared imaging obtained using the ACS, WFPC2 and NICMOS cameras aboard the Hubble Space Telescope of 31 24um--bright z~2 Dust Obscured Galaxies...
The Origin of the 24-micron Excess in Red Galaxies (2008)
Brand, Kate, Moustakas, John, Armus, Lee, Assef, Roberto J., Brown, Michael J. I., Cool, Richard R., ...
Observations with the Spitzer Space Telescope have revealed a population of red-sequence galaxies with a significant excess in their 24-micron emission compared to what is expected from an old...
Clustering of dust-obscured galaxies at z ~ 2 (2008)
Brodwin, Mark, Dey, Arjun, Brown, Michael J. I., Pope, Alexandra, Armus, Lee, Bussmann, Shane, ...
We present the angular autocorrelation function of 2603 dust-obscured galaxies (DOGs) in the Boötes field of the NOAO Deep Wide-Field Survey. DOGs are red, obscured galaxies, defined as having...
Clustering of Dust-Obscured Galaxies at z ~ 2 (2008)
Brodwin, Mark, Dey, Arjun, Brown, Michael J. I., Pope, Alexandra, Armus, Lee, Bussmann, Shane, ...
We present the angular autocorrelation function of 2603 dust-obscured galaxies (DOGs) in the Bootes field of the NOAO Deep Wide-Field Survey. DOGs are red, obscured galaxies, defined as having R-[24]...
Mid-infrared selection of brown dwarfs and high-redshift quasars (2008)
Stern, Daniel, Kirkpatrick, J. Davy, Allen, Lori E., Bian, Chao, Blain, Andrew, Brand, Kate, ...
We discuss color selection of rare objects in a wide-field multiband survey spanning from the optical to the mid-infrared. Simple color criteria simultaneously identify and distinguish two of the...
Melbourne, J., Desai, V., Armus, Lee, Dey, Arjun, Brand, K., Thompson, D., ...
Spitzer MIPS images in the Boötes field of the NOAO Deep Wide-Field Survey have revealed a class of extremely dust-obscured galaxy (DOG) at z ~ 2. The DOGs are defined by very red optical to...
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...
A luminosity function of Lyα-emitting galaxies at z ≈ 4.5¹´² (2008)
Dawson, Steve, Rhoads, James E., Malhotra, Sangeeta, Stern, Daniel, Wang, JunXian, Dey, Arjun, ...
We present a catalog of 59 z ≈ 4:5 Lyα-emitting galaxies spectroscopically confirmed in a campaign of Keck DEIMOS follow-up observations to candidates selected in the Large Area Lyα (LALA)...
Melbourne, J., Desai, V., Armus, Lee, Dey, Arjun, Brand, K., Thompson, D., ...
Spitzer MIPS images in the Bootes field of the NOAO Deep Wide-Field Survey have revealed a class of extremely dust obscured galaxy (DOG) at z~2. The DOGs are defined by very red optical to mid-IR...
Spitzer mid-infrared spectroscopy of distant X-ray luminous active galactic nuclei (2008)
Brand, Kate, Weedman, Dan W., Desai, Vandana, Le Floc'h, Emeric, Armus, Lee, Dey, Arjun, ...
We present mid-infrared spectroscopy of a sample of 16 optically faint infrared luminous galaxies obtained with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope. These sources were...
Redshift distribution of extragalactic 24 μm sources (2008)
Desai, Vandana, Soifer, B. T., Dey, Arjun, Jannuzi, Buell T., Le Floc'h, Emeric, Bian, Chao, ...
We present the redshift distribution of a complete, unbiased sample of 24 μm sources down to f_ν(24 μm) = 300 μJy (5 σ). The sample consists of 591 sources detected in the Boötes field of the...
Clusters of Galaxies in the First Half of the Universe from the IRAC Shallow Survey (2008)
Eisenhardt, Peter R. M., Brodwin, Mark, Gonzalez, Anthony H., Stanford, S. Adam, Stern, Daniel, Barmby, Pauline, ...
We have identified 335 galaxy cluster and group candidates, 106 of which are at z > 1, using a 4.5 um selected sample of objects from a 7.25 deg^2 region in the Spitzer Infrared Array Camera (IRAC)...
A significant population of very luminous dust-obscured galaxies at redshift z ~ 2 (2008)
Dey, Arjun, Soifer, B. T., Desai, Vandana, Brand, Kate, Le Floc'h, Emeric, Brown, Michael J. I., ...
The Spitzer Space Telescope has revealed a significant population of high-redshift (z ~ 2) dust-obscured galaxies with large mid-infrared to ultraviolet luminosity ratios. Due to their optical...
Red Galaxy Growth and the Halo Occupation Distribution (2008)
Brown, Michael J. I., Zheng, Zheng, White, Martin, Dey, Arjun, Jannuzi, Buell T., Benson, Andrew J., ...
We have traced the past 7 Gyr of red galaxy stellar mass growth within dark matter halos. We have determined the halo occupation distribution, which describes how galaxies reside within dark matter...
Radio-loud high-redshift protogalaxy candidates in Bootes (2008)
Croft, Steve, Van Breugel, Wil, Brown, Michael J. I., De Vries, Wim, Dey, Arjun, Eisenhardt, Peter, ...
We used the Near Infrared Camera on Keck I to obtain Ks-band images of four candidate high-redshift radio galaxies selected using optical and radio data in the NOAO Deep Wide-Field Survey in Bootes....
Redshift Distribution of Extragalactic 24 micron Sources (2008)
Desai, Vandana, Soifer, B. T., Dey, Arjun, Jannuzi, Buell T., Floc'h, Emeric Le, Bian, Chao, ...
We present the redshift distribution of a complete, unbiased sample of 24 micron sources down to fnu(24 micron) = 300 uJy (5-sigma). The sample consists of 591 sources detected in the Bootes field of...
Spitzer Mid-Infrared Spectroscopy of Distant X-ray Luminous AGN (2008)
Brand, Kate, Weedman, Dan W., Desai, Vandana, Floc'h, Emeric Le, Armus, Lee, Dey, Arjun, ...
We present mid-infrared spectroscopy of a sample of 16 optically faint infrared luminous galaxies obtained with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope. These sources were...
Spitzer mid-infrared spectroscopy of 70 μm-selected distant luminous infrared galaxies (2008)
Brand, Kate, Weedman, Dan W., Desai, Vandana, Le Floc'h, Emeric, Armus, Lee, Dey, Arjun, ...
We present mid-infrared spectroscopy obtained with the Spitzer Space Telescope of a sample of 11 optically faint, infrared luminous galaxies selected from a Spitzer MIPS 70 μm imaging survey of the...
A Significant Population of Very Luminous Dust-Obscured Galaxies at Redshift z ~ 2 (2008)
Dey, Arjun, Soifer, B. T., Desai, Vandana, Brand, Kate, LeFloc'h, Emeric, Brown, Michael J., ...
Observations with Spitzer Space Telescope have recently revealed a significant population of high-redshift z~2 dust-obscured galaxies (DOGs) with large mid-IR to UV luminosity ratios. These galaxies...
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...
Red galaxy growth and the halo occupation distribution (2008)
Brown, Michael J. I., Zheng, Zheng, White, Martin, Dey, Arjun, Jannuzi, Buell T., Benson, Andrew J., ...
We have traced the past 7 Gyr of red galaxy stellar mass growth within dark matter halos. We have determined the halo occupation distribution, which describes how galaxies reside within dark matter...
Optical Gamma Ray Burst Followup at Kitt Peak National Observatory (2007)
James Rhoads, Bruce Carney, F. Claver, Arthur D. Code, Andrew Cole, Arjun Dey, ...
. The discovery of probable X-ray, optical, and radio counterparts to Gamma Ray Bursts (GRBs) may allow significant advances in GRB research. More data are sorely needed, however. We have a target of...
SERENDIPITOUSLY DETECTED GALAXIES IN THE HUBBLE DEEP FIELD1 (2007)
Steve Dawson, Daniel Stern, Andrew J. Bunker, Hyron Spinrad, Arjun Dey
We present a catalog of 74 galaxies detected serendipitously during a campaign of spectroscopic observations of the Hubble Deep Field North (HDF) and its environs. Among the identied objects are ve...
Spitzer Mid-Infrared Spectroscopy of 70um-Selected Distant Luminous Infrared Galaxies (2007)
Brand, Kate, Weedman, Dan W., Desai, Vandana, Floc'h, Emeric Le, Armus, Lee, Dey, Arjun, ...
We present mid-infrared spectroscopy obtained with the Spitzer Space Telescope of a sample of 11 optically faint, infrared luminous galaxies selected from a Spitzer MIPS 70um imaging survey of the...
A Luminosity Function of Lyman Alpha Emitting Galaxies at Redshift 4.5 (2007)
Dawson, Steve, Rhoads, James E., Malhotra, Sangeeta, Stern, Daniel, Wang, JunXian, Dey, Arjun, ...
We present a catalog of 59 z=4.5 Lyman alpha emitting galaxies spectroscopically confirmed in a campaign of Keck/DEIMOS follow-up observations to candidates selected in the Large Area Lyman Alpha...
Reuland, Michiel, Van Breugel, Wil, De Vries, Wim, Dopita, Michael A., Dey, Arjun, Miley, George, ...
We present the results of an optical and near-IR spectroscopic study of giant nebular emission-line halos associated with three z > 3 radio galaxies, 4C 41.17, 4C 60.07, and B2 0902+34. Previous deep...
The Massive Hosts of Radio Galaxies Across Cosmic Time (2007)
Seymour, Nick, Stern, Daniel, De Breuck, Carlos, Vernet, Joel, Rettura, Alessandro, Dickinson, Mark, ...
We present the results of a comprehensive Spitzer survey of 69 radio galaxies across 1
Reuland, Michiel, Van Breugel, Wil, De Vries, Wim, Dopita, Michael A., Dey, Arjun, Miley, George, ...
We present the results of an optical and near-IR spectroscopic study of giant nebular emission line halos associated with three z > 3 radio galaxies, 4C 41.17, 4C 60.07 and B2 0902+34. Previous deep...
Evidence for merging or disruption of red galaxies from the evolution of their clustering (2006)
White, Martin, Zheng, Zheng, Brown, Michael J. I., Dey, Arjun, Jannuzi, Buell T.
The formation and evolution of massive red galaxies form a crucial test of theories of galaxy formation based on hierarchical assembly. In this letter we use observations of the clustering of...
The Evolving Luminosity Function of Red Galaxies (2006)
Brown, Michael J. I., Dey, Arjun, Jannuzi, Buell T., Brand, Kate, Benson, Andrew J., Brodwin, Mark, ...
We trace the assembly history of red galaxies since z=1, by measuring their evolving space density with the B-band luminosity function. Our sample of 39599 red galaxies, selected from 6.96 square...
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...
A New Einstein Cross: A Highly Magnified, Intrinsically Faint Lyman-Alpha Emitter at z=2.7 (2006)
Bolton, Adam S., Moustakas, Leonidas A., Stern, Daniel, Burles, Scott, Dey, Arjun, Spinrad, Hyron
We report the discovery of a new Einstein cross at redshift z_S = 2.701 based on Lyman-alpha emission in a cruciform configuration around an SDSS luminous red galaxy (z_L = 0.331). The system was...
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...
The Chandra XBootes Survey - III: Optical and Near-IR Counterparts (2005)
Brand, Kate, Brown, Michael J. I., Dey, Arjun, Jannuzi, Buell T., Kochanek, Christopher S., Kenter, Almus T., ...
The XBootes Survey is a 5-ks Chandra survey of the Bootes Field of the NOAO Deep Wide-Field Survey (NDWFS). This survey is unique in that it is the largest (9.3 deg^2), contiguous region imaged in...
The FLAMINGOS Extragalactic Survey (2005)
Elston, Richard J., Gonzalez, Anthony H., McKenzie, Eric, Brodwin, Mark, Brown, Michael J. I., Cardona, Gustavo, ...
Using the Florida Multi-object Imaging Near-IR grism Observational Spectrometer (FLAMINGOS), we have conducted the FLAMINGOS Extragalactic Survey (FLAMEX), a deep imaging survey covering 7.1 square...
An IR-Selected Galaxy Cluster at z = 1.41 (2005)
Stanford, S. A., Eisenhardt, Peter R., Brodwin, Mark, Gonzalez, Anthony H., Stern, Daniel, Jannuzi, Buell, ...
We report the discovery of a galaxy cluster at z = 1.41. ISCS J143809+341419 was found in the Spitzer/IRAC Shallow Survey of the Bootes field in the NOAO Deep Wide-Field Survey carried out by IRAC....
Brown, Michael J. I., Brand, Kate, Dey, Arjun, Jannuzi, Buell T., Cool, Richard, Floc'h, Emeric Le, ...
We determine the rest-frame 8 micron luminosity function of type I quasars over the redshift range 1
Spitzer/IRAC selected galaxy clusters at z > 1 (2005)
Eisenhardt, Peter R., Brodwin, Mark, Stern, Dan, Gonzalez, Anthony, Stanford, Adam, Brown, Michael, ...
NASA
Black Hole Masses and Eddington Ratios at 0.3 (2005)
Kollmeier, Juna A., Onken, Christopher A., Kochanek, Christopher S., Gould, Andrew, Weinberg, David H., Dietrich, Matthias, ...
We study the distribution of Eddington luminosity ratios, L_bol/L_edd, of active galactic nuclei (AGNs) discovered in the AGN and Galaxy Evolution Survey (AGES). We combine H-beta, MgII, and CIV line...
The XBootes Chandra Survey Paper II: The X-ray Source Catalog (2005)
Kenter, Almus, Murray, Stephen S., Forman, William R., Jones, Christine, Green, Paul, Kochanek, Christopher S., ...
We present results from a Chandra survey of the nine square degree Bootes field of the NOAO Deep Wide-Field Survey (NDWFS). This XBootes survey consists of 126 separate contiguous ACIS-I observations...
Glazebrook, Karl, Eisenstein, Daniel, Dey, Arjun, Nichol, Bob
This white paper gives an overview of the proposed Gemini/Subaru Wide-Field Multi-Object Spectrograph (WFMOS) and the proposed redshift surveys of 2.6 million galaxies with 0.5
XBootes: An X-Ray Survey of the NDWFS Bootes Field - Paper I Overview and Initial Results (2005)
Murray, Stephen S., Kenter, Almus, Forman, William R., Jones, Christine, Green, Paul J., Kochanek, Christopher S., ...
We obtained a 5 ksec deep Chandra X-ray Observatory ACIS-I map of the 9.3 square degree Bootes field of the NOAO Deep Wide-Field Survey. Here we describe the data acquisition and analysis strategies...
Tracing the Nuclear Accretion History of the Red Galaxy Population (2005)
Brand, Kate, Dey, Arjun, Brown, Michael J. I., Watson, Casey R., Jannuzi, Buell T., Najita, Joan R., ...
We investigate the evolution of the hard X-ray luminosity of the red galaxy population using a large sample of 3316 red galaxies selected over a wide range in redshift (0.3
The Clustering of Extragalactic Extremely Red Objects (2004)
Brown, Michael J. I., Jannuzi, Buell T., Dey, Arjun, Tiede, Glenn P.
We have measured the angular and spatial clustering of 671 K5 Extremely Red Objects (EROs) from a 0.98 square degree sub-region of the NOAO Deep Wide-Field Survey (NDWFS). Our study covers nearly 5...
Mid-Infrared Selection of Active Galaxies (2004)
Stern, Daniel, Eisenhardt, Peter, Gorjian, Varoujan, Kochanek, Christopher S., Caldwell, Nelson, Eisenstein, Daniel, ...
Mid-infrared photometry provides a robust technique for identifying active galaxies. While the ultraviolet to mid-infrared continuum of normal galaxies is dominated by the composite stellar black...
Spectroscopic Properties of the z=4.5 Lyman-alpha Emitters (2004)
Dawson, Steve, Rhoads, James E., Malhotra, Sangeeta, Stern, Daniel, Dey, Arjun, Spinrad, Hyron, ...
We present Keck/LRIS optical spectra of 17 Lya-emitting galaxies and one Lyman break galaxy at z=4.5 discovered in the Large Area Lyman Alpha (LALA) survey. The survey has identified a sample of ~350...
Rhoads, James E., Xu, Chun, Dawson, Steve, Dey, Arjun, Malhotra, Sangeeta, Wang, JunXian, ...
We present a redshift z=6.535 galaxy discovered by its Lyman alpha emission in a 9180A narrowband image from the Large Area Lyman Alpha (LALA) survey. The Ly-a line luminosity (1.1e43 erg/s) is among...
Red Galaxy Clustering in the NOAO Deep Wide-Field Survey (2003)
Brown, Michael J. I., Dey, Arjun, Jannuzi, Buell T., Lauer, Tod R., Tiede, Glenn P., Mikles, Valerie J.
We have measured the clustering of z1000 galaxies to be selected as a function of spectral type, absolute magnitude, and photometric redshift. Spectral synthesis models can be used to predict the...
Giant Lya nebulae associated with high redshift radio galaxies (2003)
Reuland, Michiel, Van Breugel, Wil, Roettgering, Huub, De Vries, Wim, Stanford, S. A., Dey, Arjun, ...
We report deep Keck narrow-band Lya images of the luminous z > 3 radio galaxies 4C 41.17, 4C 60.07, and B2 0902+34. The images show giant, 100-200 kpc scale emission line nebulae, centered on these...
Have we found the first stars in Lyman-α emitters? Elektronische Daten (2003)
Malhotra, Sangeeta, Rhoads, James, Wang, Junxian, Dawson, Steve, Dey, Arjun, ...
Talk Abstract von Kongress: Star and Structure Formation: From First Light to the Milky Way, Astrophysics Conference, August 18-22, 2003, ETH Zurich, Switzerland
Rhoads, James E., Dey, Arjun, Malhotra, Sangeeta, Stern, Daniel, Spinrad, Hyron, Jannuzi, Buell T., ...
Narrow-band searches for Lyman alpha emission are an efficient way of identifying star-forming galaxies at high redshifts. We present Keck telescope spectra confirming redshifts z = 5.7 for three...
HST Imaging of a z=1.55 Old Galaxy Group (2002)
Bunker, Andrew, Spinrad, Hyron, McLure, Ross, Dey, Arjun, Dunlop, James, Peacock, John, ...
We present high-resolution imaging in the rest-frame optical of the weak radio source LBDS53W091. Previous optical spectroscopy has shown that this object has an evolved stellar population of age...
Stern, Daniel, Tozzi, Paolo, Stanford, S. A., Rosati, Piero, Holden, Brad, Eisenhardt, Peter, ...
We present our first results on field X-ray sources detected in a deep, 184.7 ks observation with the ACIS-I camera on Chandra. The observations target the Lynx field of SPICES, and contains three...
A Galactic Wind at z = 5.190 (2002)
Dawson, Steve, Spinrad, Hyron, Dey, Arjun, Van Breugel, Wil, De Vries, Wim, Stern, Daniel, ...
We report the serendipitous detection in high-resolution optical spectroscopy of a strong, asymmetric Ly-alpha emission line at z = 5.190. The detection was made in a 2.25 hour exposure with the...
Chandra Detection of a TypeII Quasar at z=3.288 (2001)
Stern, Daniel, Moran, Edward C., Coil, Alison L., Connolly, Andrew, Davis, Marc, Dawson, Steve, ...
We report on observations of a TypeII quasar at redshift z=3.288, identified as a hard X-ray source in a 185 ks observation with the Chandra X-ray Observatory and as a high-redshift photometric...
Serendipitously Detected Galaxies in the Hubble Deep Field (2001)
Dawson, Steve, Stern, Daniel, Bunker, Andrew J., Spinrad, Hyron, Dey, Arjun
We present a catalog of 74 galaxies detected serendipitously during a campaign of spectroscopic observations of the Hubble Deep Field North (HDF) and its environs. Among the identified objects are...
The Large Area Lyman Alpha Survey (2001)
Rhoads, James E., Malhotra, Sangeeta, Dey, Arjun, Jannuzi, Buell T., Stern, Daniel, Spinrad, Hyron
The Lyman-$\alpha$ line is expected to be strong in the presence of active star formation and the absence of dust, making it a good tool for finding chemically primitive galaxies in the early...
Large Area Lyman Alpha survey: finding young galaxies at z=4.5 (2001)
Malhotra, Sangeeta, Rhoads, James, Dey, Arjun, Jannuzi, Buell, Stern, Daniel, Spinrad, Hyron
Strong Lyman-alpha emission is a signpost of young stars and the absence of dust and thus indicates young galaxies. To find such a population of young galaxies at z=4.5 we started the Large Area...
Evidence Against a Redshift z>6 for the Galaxy STIS 123627+621755 (2000)
Stern, Daniel, Eisenhardt, Peter, Spinrad, Hyron, Dawson, Steve, Van Breugel, Wil, Dey, Arjun, ...
The identification of galaxies at extreme distances provides our most direct information on the earliest phases of galaxy formation. The distance implied by redshifts z > 5 makes this a challenging...
UV Spectropolarimetry of Narrow-line Radio Galaxies (2000)
Kishimoto, Makoto, Antonucci, Robert, Cimatti, Andrea, Hurt, Todd, Dey, Arjun, Van Breugel, Wil, ...
We present the results of UV spectropolarimetry (2000 - 3000A) and far-UV spectroscopy (1500 - 2000A) of two low-redshift narrow-line radio galaxies (NLRGs) taken with the Faint Object Spectrograph...
Red Quasars and Quasar Evolution: the Case of BALQSO FIRST J155633.8+351758 (2000)
Najita, Joan, Dey, Arjun, Brotherton, Michael
We present the first near-IR spectroscopy of the z=1.5 radio-loud BALQSO FIRST J155633.8+351758. Both the Balmer decrement and the slope of the rest-frame UV-optical continuum independently suggest a...
An excess of submm sources near 4C41.17: a candidate proto-cluster at z=3.8? (2000)
Ivison, Rob J., Dunlop, James S., Smail, Ian, Dey, Arjun, Liu, Michael C., Graham, James R.
Biased galaxy-formation theories predict that massive galaxies at high redshifts should act as signposts to high-density environments in the early Universe, which subsequently evolve into the cores...
Stellar Populations and Galaxy Morphology at High Redshift (2000)
Bunker, Andrew, Spinrad, Hyron, Stern, Daniel, Thompson, Rodger, Moustakas, Leonidas, Davis, Marc, ...
In this article we investigate the morphology and stellar populations of high-redshift galaxies through multi-waveband HST imaging and ground-based spatially-resolved spectroscopy. We study the...
First Results from the Large Area Lyman Alpha Survey (2000)
Rhoads, James E., Malhotra, Sangeeta, Dey, Arjun, Stern, Daniel, Spinrad, Hyron, Jannuzi, Buell
We report on a new survey for z=4.5 Lyman alpha sources, the Large Area Lyman Alpha (LALA) survey. Our survey achieves an unprecedented combination of volume and sensitivity by using narrow-band...
Extremely Red Objects in the Field of QSO 1213-0017: A Galaxy Concentration at z=1.31 (2000)
Liu, Michael C., Dey, Arjun, Graham, James R., Bundy, Kevin A., Steidel, Charles C., Adelberger, Kurt L., ...
We have discovered a concentration of extremely red objects (EROs; R-K>6) in the field of the z=2.69 quasar QSO 1213-0017 (UM 485), which is significantly overabundant compared to the field ERO...
One-Line Redshifts and Searches for High-Redshift Lyman-Alpha Emission (2000)
Stern, Daniel, Bunker, Andrew J., Spinrad, Hyron, Dey, Arjun
We report the serendipitous discovery of two objects close in projection with fairly strong emission lines at long wavelength (~9190 A). One (A) seems not to be hosted by any galaxy brighter than...
Riess, Adam G., Filippenko, Alexei V., Liu, Michael C., Challis, Peter, Clocchiatti, Alejandro, Diercks, Alan, ...
We have measured the rest-frame B,V, and I-band light curves of a high-redshift type Ia supernova (SN Ia), SN 1999Q (z=0.46), using HST and ground-based near-infrared detectors. A goal of this study...
Extremely Red Objects in the Field of QSO 1213-0017: A Galaxy Concentration at z=1.31 (1999)
Liu, Michael C., Dey, Arjun, Graham, James R., Steidel, Charles C., Adelberger, Kurt L.
We have discovered an excess of extremely red objects (EROs) surrounding the z=2.69 quasar QSO 1213-0017 (UM 485). Optical/IR colors for these galaxies are consistent with z=1-2 ellipticals, and...
Bicknell, Geoffrey V., Sutherland, Ralph S., Dopita, Michael A., Dey, Arjun, Miley, George K.
The high redshift radio galaxy 4C41.17 consists of a powerful radio source in which previous work has shown that there is strong evidence for jet-induced star formation along the radio axis. We argue...
An X-ray Selected Galaxy Cluster at z=1.26 (1999)
Rosati, Piero, Stanford, S. A., Eisenhardt, Peter R., Elston, Richard, Spinrad, Hyron, Stern, Daniel, ...
We report the discovery of an X-ray luminous galaxy cluster at z=1.26. RXJ0848.9+4452 was selected as an X-ray cluster candidate in the ROSAT Deep Cluster Survey, on the basis of its spatial extent....
New High-Redshift Radio Galaxies from the MIT-Green Bank Catalog (1998)
Stern, Daniel, Dey, Arjun, Spinrad, Hyron, Maxfield, Leslie, Dickinson, Mark, Schlegel, David, ...
We present optical identifications and redshifts for seventeen new high-redshift radio sources. Fifteen of these sources are radio galaxies; the remaining two are high-redshift, steep-spectrum,...
Dey, Arjun, Spinrad, Hyron, Stern, Daniel, Graham, James R., Chaffee, Frederic H.
We report the discovery of Lyman alpha emission from a galaxy at z=5.34, the first object at z>5 with a spectroscopically confirmed redshift. The faint continuum emission (m(8000A)=27 AB mag),...
The Early History of Powerful Radio Galaxies (1998)
I briefly review the current status of observations of AGN-powered UV/optical light, starlight, dust and outflow phenomena in high-redshift powerful radio galaxies. The existing data are consistent...
Spectroscopy of z>3 Lyman-limit Galaxies (1998)
Spinrad, Hyron, Dey, Arjun, Stern, Daniel, Bunker, Andrew
We discuss the spectral character of Lyman-limit-selected, star-forming galaxies at z>3. The rest-frame UV spectra of these faint galaxies may show Ly-alpha in either absorption or emission, probably...
Spectropolarimetry of 3CR 68.1: A Highly Inclined Quasar (1998)
Brotherton, M. S., Wills, Beverley J., Dey, Arjun, Van Breugel, Wil, Antonucci, Robert
We present Keck spectropolarimetry of the highly polarized radio-loud quasar 3CR 68.1 (z=1.228, V=19). The polarization increases from 5 in the red (4000 A rest-frame) to >10% in the blue (1900 A...
Dust, gas and the evolutionary status of the radio galaxy, 8C1435+635, at z = 4.25 (1997)
Ivison, Rob, Dunlop, James, Hughes, David, Archibald, Elese, Stevens, Jason, Holland, Wayne, ...
We present the results of new rest-frame far-IR observations of the z = 4.25 radio galaxy, 8C1435+635, which not only confirm that it contains an enormous quantity of dust (as first inferred from its...
An IR-Selected Galaxy Cluster at z=1.27 (1997)
Stanford, S. A., Elston, Richard, Eisenhardt, Peter, Spinrad, Hyron, Stern, Daniel, Dey, Arjun
We report the discovery of a galaxy cluster at z=1.27. ClG J0848+4453 was found in a near-IR field survey as a high density region of objects with very red J-K colors. Optical spectroscopy of a...
Spectropolarimetry of FIRST BAL QSOs (1997)
Brotherton, M. S., Tran, Hien D., Van Breugel, Wil, Dey, Arjun, Antonucci, Robert
We present Keck spectropolarimetry of two rare low-ionization broad absorption line (BAL) QSOs, FIRST J084044.5+363328 and FIRST J155633.8+351758, that also exhibit narrow absorption lines from...
Triggered Star Formation in a Massive Galaxy at z=3.8: 4C41.17 (1997)
Dey, Arjun, Van Breugel, Wil, Vacca, William, Antonucci, Robert
Spectropolarimetric observations obtained with the W. M. Keck Telescope of the z=3.8 radio galaxy 4C41.17 show that the UV continuum emission from this galaxy, which is aligned with the radio axis,...
LBDS 53W091: An Old red Galaxy at z=1.552 (1997)
Spinrad, Hyron, Dey, Arjun, Stern, Daniel, Dunlop, James, Peacock, John, Jimenez, Raul, ...
The weak radio source LBDS 53W091 is associated with a very faint (R approx. 24.5) red (R-K approx. 5.8) galaxy. Long spectroscopic integrations with the W. M. Keck telescope have provided an...
Infrared surveys have discovered a significant population of bright (K6) objects. Little is known about the properties of these objects on account of their optical faintness (R>24). Here, we report...
On the Origin of the UV Continuum Emission from the High Redshift Radio Galaxy 3C256 (1996)
Dey, Arjun, Cimatti, Andrea, Van Breugel, Wil, Antonucci, Robert, Spinrad, Hyron
We report spectropolarimetric observations obtained with the W.M. Keck Telescope of the high redshift z=1.824 aligned radio galaxy 3C256. Our observations confirm that the spatially extended UV...
Dickinson, Mark, Dey, Arjun, Spinrad, Hyron
We report ground based and HST observations of the z=1.206 radio galaxy 3C 324, a prototypical example of the radio-optical ``alignment effect.'' While infrared images shows a simple, round object...
The Radio Galaxy 3C265 Contains a Hidden Quasar Nucleus (1995)
We report the discovery of broad MgII emission from the high redshift radio galaxy 3C265 (z=0.81). We detect the broad line in the nuclear spectrum and in the spatially extended galaxian component,...
Discovery of a z=2.76 Dusty Radio Galaxy? (1994)
Dey, Arjun, Spinrad, Hyron, Dickinson, Mark
We report the discovery of a z=2.76 radio galaxy, MG1019+0535, with an unusual spectrum. Ly$\alpha$, which usually dominates the spectra of high redshift radio galaxies, is very weak and the...
Keck Observations of the Most Distant Galaxy: 8C1435+63 at z=4.25 (1994)
Spinrad, Hyron, Dey, Arjun, Graham, James R.
We report on Keck observations and confirm the redshift of the most distant galaxy known: 8C1435+63 at z=4.25. The spectrum shows a strong Ly$\alpha$ line, a Ly$\alpha$ forest continuum break and a...
The origin of the UV alignments in low and high redshift radio galaxies /--by Arjun Dey. (1992)
Thesis (Ph. D in Astronomy)--University of California, Berkeley, Dec. 1994.