The Nature of Optically Dull Active Galactic Nuclei in COSMOS (2009)
Trump, Jonathan R., Impey, Chris D., Taniguchi, Yoshi, Brusa, Marcella, Civano, Francesca, Elvis, Martin, ...
We present infrared, optical, and X-ray data of 48 X-ray bright, optically dull AGNs in the COSMOS field. These objects exhibit the X-ray luminosity of an active galactic nucleus (AGN) but lack broad...
Extended Light in E/S0 Galaxies and Implications for Disk Rebirth (2009)
Moffett, Amanda J., Kannappan, Sheila J., Laine, Seppo, Wei, Lisa H., Baker, Andrew J., Impey, Chris D.
The recent discovery of extended ultraviolet (XUV) disks around a large fraction of late-type galaxies provides evidence for unexpectedly large-scale disk building at recent epochs. Combining GALEX...
Observational limits on type 1 active galactic nucleus rate in COSMOS (2009)
Trump, Jonathan R., Impey, Chris D., Kelly, Brandon C., Elvis, Martin, Merloni, A., Bongiorno, Angela, ...
We present black hole masses and accretion rates for 182 Type 1 active galactic nuclei (AGNs) in COSMOS. We estimate masses using the scaling relations for the broad H β, Mg ii, and C iv emission...
The COSMOS Active Galactic Nucleus Spectroscopic Survey. I. XMM-Newton Counterparts (2009)
Trump, Jonathan R., Impey, Chris D., Elvis, Martin, McCarthy, Patrick J., Huchra, John P., Brusa, Marcella, ...
We present optical spectroscopy for an X-ray and optical flux-limited sample of 677 XMM-Newton selected targets covering the 2 deg^2 Cosmic Evolution Survey field, with a yield of 485 high-confidence...
Observational Limits on Type 1 AGN Accretion Rate in COSMOS (2009)
Trump, Jonathan R., Impey, Chris D., Kelly, Brandon C., Elvis, Martin, Merloni, Andrea, Bongiorno, Angela, ...
We present black hole masses and accretion rates for 182 Type 1 AGN in COSMOS. We estimate masses using the scaling relations for the broad Hb, MgII, and CIV emission lines in the redshift ranges 0.16
The COSMOS active galactic nucleus spectroscopic survey - I. XMM-Newton counterparts (2009)
Trump, Jonathan R., Impey, Chris D., Elvis, Martin, McCarthy, Patrick J., Huchra, John P., Brusa, Marcella, ...
Observational limits on type 1 active galactic nucleus accretion rate in COSMOS (2009)
Trump, Jonathan R., Impey, Chris D., Kelly, Brandon C., Elvis, Martin, Merloni, Andrea, Bongiorno, Angela, ...
The COSMOS AGN Spectroscopic Survey I: XMM Counterparts (2008)
Trump, Jonathan R., Impey, Chris D., Elvis, Martin, McCarthy, Patrick J., Huchra, John P., Brusa, Marcella, ...
We present optical spectroscopy for an X-ray and optical flux-limited sample of 677 XMM-Newton selected targets covering the 2 deg^2 COSMOS field, with a yield of 485 high-confidence redshifts. The...
Marble, Andrew R., Eriksen, Kristoffer A., Impey, Chris D., Bai, Lei, Miller, Lance
The Lyman-alpha forest has opened a new redshift regime for cosmological investigation. At z > 2 it provides a unique probe of cosmic geometry and an independent constraint on dark energy that is not...
Marble, Andrew R., Eriksen, Kristoffer A., Impey, Chris D., Oppenheimer, Benjamin D., Dave, Romeel
The isotropy of the Lyman-alpha forest in real-space uniquely provides a measurement of cosmic geometry at z > 2. The angular diameter distance for which the correlation function along the line of...
astro-ph/9910570 1 Nov 1999 (2007)
To Appear In, Charles T. Liu, Cathy E. Petry, Chris D. Impey, Craig B. Foltz
We present a catalog of 30 QSOs and their spectra, in the square degree of sky centered on the northern Hubble Deep Field. These QSOs were selected by multicolor photometry and subsequently confirmed...
Robert H. Becker, Richard L. White, Michael S. Brotherton, Chris D. Impey, Frederic H. Chaffee, ...
We present the results of an extension of the FIRST Bright Quasar Survey (FBQS) to the South Galactic cap, and to a fainter optical magnitude limit. Radio source counterparts with SERC R magnitudes...
A survey of AGN and supermassive black holes in the COSMOS survey (2007)
Impey, Chris D., Trump, Jon R., McCarthy, Pat J., Elvis, Martin, Huchra, John P., Scoville, Nick Z., ...
Magellan spectroscopy of AGN candidates in the COSMOS field (2007)
Trump, Jonathan R., Impey, Chris D., McCarthy, Patrick J., Elvis, Martin, Huchra, John P., Brusa, Marcella, ...
A multiwavelength study of AGN with COSMOS: Do low-Eddington ratio type 1 AGN exist? (2007)
Trump, Jonathan R., Impey, Chris D., Gabor, Jared M., McCarthy, Patrick J., Elvis, Martin, Huchra, John, ...
Magellan spectroscopy of AGN candidates in the COSMOS field (2007)
Trump, Jonathan R., Impey, Chris D., McCarthy, Patrick J., Elvis, Martin, Huchra, John P., Brusa, Marcella, ...
We present spectroscopic redshifts for the first 466 X-ray- and radio-selected AGN targets in the 2 deg2 COSMOS field. Spectra were obtained with the IMACS instrument on the Magellan (Baade)...
A survey of AGN and supermassive black holes in the COSMOS survey (2007)
Impey, Chris D., Trump, Jon R., McCarthy, Pat J., Elvis, Martin, Huchra, John P., Scoville, Nick Z., ...
Not Available
Magellan Spectroscopy of AGN Candidates in the COSMOS Field (2006)
Trump, Jonathan R., Impey, Chris D., McCarthy, Patrick J., Elvis, Martin, Huchra, John P., Brusa, Marcella, ...
We present spectroscopic redshifts for the first 466 X-ray and radio-selected AGN targets in the 2 deg^2 COSMOS field. Spectra were obtained with the IMACS instrument on the Magellan (Baade)...
Peng, Chien Y., Impey, Chris D., Rix, Hans-Walter, Keeton, Charles R., Falco, Emilio E., Kochanek, Chris S., ...
Gravitational lensing assists in the detection of quasar hosts by amplifying and distorting the host light away from the unresolved quasar core images. We present the results of HST observations of...
Peng, Chien Y., Impey, Chris D., Rix, Hans-Walter, Kochanek, Christopher S., Keeton, Charles R., Falco, Emilio E., ...
In the present-day universe, supermassive black hole masses (MBH) appear to be strongly correlated with their galaxy's bulge luminosity, among other properties. In this study we explore the analogous...
Peng, Chien Y., Impey, Chris D., Rix, Hans-Walter, Falco, Emilio E., Keeton, Charles R., Kochanek, Chris S., ...
Gravitational lensing assists in the detection of quasar hosts by amplifying and distorting the host light away from the unresolved quasar core images. We present the results of HST observations of...
Probing the coevolution of supermassive black holes and quasar host galaxies (2006)
Peng, Chien Y., Impey, Chris D., Ho, Luis C., Barton, Elizabeth J., Rix, Hans-Walter
At low redshift, there are fundamental correlations between the mass of supermassive black holes (MBH) and the mass (Mbulge) and luminosity of the host galaxy bulge. We investigate the same relation...
Probing the Coevolution of Supermassive Black Holes and Quasar Host Galaxies (2005)
Peng, Chien Y., Impey, Chris D., Ho, Luis C., Barton, Elizabeth J., Rix, Hans-Walter
At low redshift, there are fundamental correlations between the mass of supermassive black holes (MBH) and the mass (Mbulge) and luminosity of the host galaxy bulge. We investigate the same relation...
Detailed Structural Decomposition of Galaxy Images (2002)
Peng, Chien Y., Ho, Luis C., Impey, Chris D., Rix, Hans-Walter
We present a two-dimensional (2-D) fitting algorithm (GALFIT) designed to extract structural components from galaxy images, with emphasis on closely modeling light profiles of spatially...
Detailed Structural Decomposition of Galaxy Images (2002)
Peng, Chien Y., Ho, Luis C., Impey, Chris D., Rix, Hans-Walter
The FIRST Bright Quasar Survey III. The South Galactic Cap (2001)
Becker, Robert H., White, Richard L., Gregg, Michael D., Laurent-Muehleisen, Sally A., Brotherton, Michael S., Impey, Chris D., ...
We present the results of an extension of the FIRST Bright Quasar Survey (FBQS) to the South Galactic cap, and to a fainter optical magnitude limit. Radio source counterparts with SERC R magnitudes...
Chien Y. Peng, Luis C. Ho, Chris D. Impey, Hans-walter Rix
We present a two-dimensional fitting algorithm (GALFIT) designed to extract structural components from galaxy images, with emphasis on closely modeling light profiles of spatially well-resolved,...
Infrared Properties of High Redshift and X-ray Selected AGN Samples (2000)
Wilkes, Belinda J., Hooper, Eric J., McLeod, Kim K., Elvis, Martin S., Hughes, David H., Impey, Chris D., ...
The NASA/ISO Key Project on active galactic nuclei (AGN) seeks to better understand the broad-band spectral energy distributions (SEDs) of these sources from radio to X-rays, with particular emphasis...
The FIRST Bright Quasar Survey. II. 60 Nights and 1200 Spectra Later (2000)
Richard White, Robert Becker, Michael Gregg, Sally Laurent-Muehleisen, Chris D. Impey, Catherine E. Petry, ...
We have used the VLA FIRST survey and the APM catalog of the POSS-I plates as the basis for constructing a new radio-selected sample of optically bright quasars. This is the first radio-selected...
Hooper, Eric J., Wilkes, Belinda J., McLeod, Kim K., Elvis, Martin S., Impey, Chris D., Lonsdale, Carol J., ...
The U.S. ISO Key Project on quasar spectral energy distributions seeks to better understand the very broad-band emission features of quasars from radio to X-rays. A key element of this project is...
The Far-infrared Continuum of Quasars (1999)
Wilkes, Belinda J., Hooper, Eric J., McLeod, Kim K., Elvis, Martin S., Impey, Chris D., Lonsdale, Carol J., ...
ISO provides a key new far-infrared window through which to observe the multi-wavelength spectral energy distributions (SEDs) of quasars and active galactic nuclei (AGN). It allows us, for the first...
HST Imaging of z > 0.4 Quasar Host Galaxies Selected by Quasar Radio and Optical Properties (1997)
Hooper, Eric J., Impey, Chris D., Foltz, Craig B.
A sample of 16 quasars selected from the Large Bright Quasar Survey in the redshift range 0.4 < z < 0.5 has been imaged in the R band with the Planetary Camera on the WFPC2 instrument of the Hubble...
Hooper, Eric J., Impey, Chris D., Foltz, Craig B., Hewett, Paul C.
A sample of 103 quasars from the Large Bright Quasar Survey (LBQS) has been observed with the VLA at 8.4 GHz to study the evolution of the radio luminosity distribution and its dependence on absolute...