Wade, Richard A., Stark, M. A., Green, Richard F., Durrell, Patrick R.
The hot subdwarf (sd) stars in the Palomar Green (PG) catalog of ultraviolet excess (UVX) objects play a key role in investigations of the frequency and types of binary companions and the...
Exploration And The, Robert A. Brown, Arthur F. Davidsen, Richard S. Ellis, Wendy L. Freedman, Richard F. Green, ...
this report to represent many interests, with a correspondingly large range of technical and scientific experience and expertise. We recognize this diversity by presenting first, in Parts I and II,...
Luminosity Functions and Evolution of Blue Galaxies In A Deep Multicolor CCD Field Survey (2007)
Charles Liu And, Charles T. Liu, Richard F. Green, Patrick B. Hall, Patrick S. Osmer
A complete sample of 659 field galaxies with 17.0!U21.1, each with U-B-VR -I7500-I8600 photometry, has been selected from a deep field survey which covers 0.83 deg 2 along six lines of sight (Hall et...
An Optical Multicolor System For Measuring Galaxy Redshifts And Spectral Types (2007)
Charles Liu And, Charles T. Liu, Richard F. Green
A method of obtaining approximate redshifts and spectral types of galaxies using a photometric system of six broad-bandpass filters is developed. The technique utilizes a smallest maximum difference...
SPECTROSCOPIC OBSERVATIONS OF QUASAR CANDIDATES FROM A DEEP MULTICOLOR SURVEY (2007)
Patrick S. Osmer, Julia Kennefick, Patrick B. Hall, Richard F. Green
We have made spectroscopic observations of 57 additional quasar candidates from the survey of Hall et al (Papers I and II). To date we have identified 13 new quasars
Patrick B. Hall, Patrick S. Osmer, Richard F. Green, Alain C. Porter, Stephen J. Warren
We have used the KPNO 4-meter Mayall telescope to image 0.83 square degrees of sky in six fields at high galactic latitude in six filters spanning 3000-10000 A to magnitude limits ranging from 22.1...
A DEEP MULTICOLOR SURVEY I. IMAGING OBSERVATIONS AND CATALOG OF STELLAR OBJECTS 1 (2007)
Patrick B. Hall, Patrick S. Osmer, Richard F. Green, Alain C. Porter, Stephen J. Warren
We have used the KPNO 4-meter Mayall telescope to image 0.83 square degrees of sky in six fields at high galactic latitude in six filters spanning 3000-10000 A to magnitude limits ranging from 22.1...
The Elongated Structure of the Hercules dSph from Deep LBT Imaging (2007)
Coleman, Matthew G., Martin, Nicolas F., Rix, Hans-Walter, Sand, David J., Bell, Eric F., ...
We present a deep, wide-field photometric survey of the newly-discovered Hercules dwarf spheroidal galaxy, based on data from the Large Binocular Telescope. Images in B, V and r were obtained with...
HUBBLE SPACE TELESCOPE ULTRAVIOLET SPECTROSCOPY OF 14 LOW-REDSHIFT QUASARS (2007)
Ganguly, Rajib, Brotherton, Michael S., Arav, Nahum, Heap, Sara R., Wisotzki, Lutz, Aldcroft, Thomas L., ...
We present low-resolution ultraviolet spectra of 14 low-redshift (zem ≤ 0:8) quasars observed with the Hubble Space Telescope STIS as part of a Snapshot project to understand the relationship...
The multi-wavelength quasar survey - III. Quasars in field 836 (2007)
Bai, Yu, Chen, Yang, He, Xiang-Tao, Wu, Jiang-Hua, Li, Qing-Kang, Green, Richard F., ...
The multi-wavelength quasar survey - IV. Quasars in the Leo cluster (2007)
Chen, Yang, Bai, Yu, He, Xiang-Tao, Wu, Jiang-Hua, Li, Qing-Kang, Sun, Yan-Chun, ...
Coleman, Matthew G., Martin, Nicolas F., Rix, Hans-Walter, Sand, David J., Bell, Eric F., ...
We present a deep, wide-field photometric survey of the newly discovered Hercules dwarf spheroidal galaxy (dSph), based on data from the Large Binocular Telescope. Images in B, V, and r were obtained...
Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars (2006)
Ganguly, Rajib, Brotherton, Michael S., Arav, Nahum, Heap, Sara R., Wisotzki, Lutz, L. Aldcroft, Thomas, ...
We present low-resolution ultraviolet spectra of 14 low redshift (z em < 0.8) quasars observed with HST/STIS as part of a Snap project to understand the relationship between quasar outflows and...
Hubble Space Telescope Ultraviolet Spectroscopy of Fourteen Low-Redshift Quasars (2006)
Ganguly, Rajib, Brotherton, Michael S., Arav, Nahum, Heap, Sara R., Wisotzki, Lutz, Aldcroft, Thomas L., ...
We present low-resolution ultraviolet spectra of 14 low redshift (z
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...
Scott, Jennifer E., Kriss, Gerard A., Lee, Julia C., Quijano, Jessica Kim, Brotherton, Michael, Canizares, Claude R., ...
We present simultaneous X-ray, far-ultraviolet, and near-ultraviolet spectra of the Seyfert 1 galaxy NGC 7469 obtained with the Chandra X-Ray Observatory, the Far Ultraviolet Spectroscopic Explorer,...
The SDSS View of the Palomar-Green Bright Quasar Survey (2005)
Jester, Sebastian, Schneider, Donald P., Richards, Gordon T., Green, Richard F., Schmidt, Maarten, Hall, Patrick B., ...
We investigate the extent to which the Palomar-Green (PG) Bright Quasar Survey (BQS) is complete and representative of the general quasar population by comparing with imaging and spectroscopy from...
Quasars and the Big Blue Bump (2004)
Shang, Zhaohui, Brotherton, Michael S., Green, Richard F., Kriss, Gerard A., Scott, Jennifer, Quijano, Jessica Kim, ...
We investigate the ultraviolet-to-optical spectral energy distributions (SEDs) of 17 active galactic nuclei (AGNs) using quasi-simultaneous spectrophotometry spanning 900-9000 Angstrom (rest frame)....
The Relationship Between Black Hole Mass and Velocity Dispersion in Seyfert 1 Galaxies (2004)
Nelson, Charles H., Green, Richard F., Bower, Gary, Gebhardt, Karl, Weistrop, Donna
Black hole masses in active galactic nuclei (AGN) are difficult to measure using conventional dynamical methods, but can be determined using the technique of reverberation mapping. However, it is...
A Composite Extreme Ultraviolet QSO Spectrum from the Far Ultraviolet Spectroscopic Explorer (2004)
Scott, Jennifer E., Kriss, Gerard A., Brotherton, Michael, Green, Richard F., Hutchings, John, Shull, J. Michael, ...
The Far Ultraviolet Spectroscopic Explorer (FUSE) has surveyed a large sample (> 100) of active galactic nuclei in the low-redshift universe (z < 1). Its response at short wavelengths makes it...
A Composite Extreme Ultraviolet QSO Spectrum from FUSE (2004)
Scott, Jennifer E., Kriss, Gerard A., Brotherton, Michael, Green, Richard F., Hutchings, John, Shull, J. Michael, ...
The Far Ultraviolet Spectroscopic Explorer (FUSE) has surveyed a large sample (> 100) of active galactic nuclei in the low redshift universe (z < 1). Its response at short wavelengths makes it...
Scott, Jennifer E., Kriss, Gerard A., Lee, Julia C., Arav, Nahum, Ogle, Patrick, Roraback, Kenneth, ...
We present a study of the intrinsic X-ray and far-ultraviolet absorption in the Seyfert 1.5 galaxy Markarian 279 using simultaneous observations from the Chandra X-ray Observatory, the Space...
The multiwavelength Quasar Survey. II. Quasars in the Coma Cluster (2002)
Chen, Yang, He, Xiang-Tao, Wu, Jiang-Hua, Li, Qing-Kang, Green, Richard F., Voges, Wolfgang
This is the second paper of the series about our Multiwavelength Quasar Survey. We present the observational results for the X-ray candidates in the field of the Coma Cluster. Nine new X-ray active...
HST STIS Observations of PG 0946+301: the Highest Quality UV Spectrum of a BALQSO (2001)
Arav, Nahum, De Kool, Martijn, Korista, Kirk T., Crenshaw, D. Michael, Van Breugel, Wil, Brotherton, Michael, ...
We describe deep (40 orbits) HST/STIS observations of the BALQSO PG 0946+301 and make them available to the community. These observations are the major part of a multi-wavelength campaign on this...
Compact Nuclei in Galaxies at Moderate Redshift: I. Imaging and Spectroscopy (1998)
Sarajedini, Vicki L., Green, Richard F., Griffiths, Richard E., Ratnatunga, Kavan
This study explores the space density and properties of active galaxies to z=0.8. We have investigated the frequency and nature of unresolved nuclei in galaxies at moderate redshift as indicators of...
Sarajedini, Vicki L., Green, Richard F., Griffiths, Richard E., Ratnatunga, Kavan
This study explores the space density and properties of active galaxies to z=0.8. We have investigated the frequency and nature of unresolved nuclei in galaxies at moderate redshift as indicators of...
The Very Highly Ionized Broad Absorption Line System of the QSO SBS1542+541 (1998)
Telfer, Randal C., Kriss, Gerard A., Zheng, Wei, Davidsen, Arthur F., Green, Richard F.
We have analyzed the broad absorption line system of the bright (V=16.5) high-redshift (z=2.361) QSO SBS1542+541 using UV spectra from the HST FOS along with optical data from the MMT and the Steward...
A Deep Multicolor Survey. IV. The Electronic Stellar Catalog (1998)
Osmer, Patrick S., Kennefick, Julia D., Hall, Patrick B., Green, Richard F.
We make available in electronic form the stellar catalog of 19,494 objects from the Deep Multicolor Survey (DMS). The DMS is based on CCD imaging with the Mayall 4-m telescope in U,B,V,R',I75,I86 and...
Hall, Patrick B., Green, Richard F., Cohen, Martin
We have conducted an optical/near-infrared study of the environments of radio-loud quasars (RLQs) at redshifts z=0.6-2. In this paper we discuss the sample selection and observations for the z=1-2...
An Optical/Near-Infrared Study of Radio-Loud Quasar Environments II. Imaging Results (1998)
Hall, Patrick B., Green, Richard F.
We use optical and near-IR imaging to examine the properties of the significant excess population of K>=19 galaxies found in the fields of 31 z=1-2 radio-loud quasars by Hall, Green & Cohen (1998)....
An Optical Multicolor System For Measuring Galaxy Redshifts And Spectral Types (1998)
Liu, Charles T., Green, Richard F.
A method of obtaining approximate redshifts and spectral types of galaxies using a photometric system of six broad-bandpass filters is developed. The technique utilizes a smallest maximum difference...
Luminosity Functions And Evolution Of Blue Galaxies In A Deep Multicolor CCD Field Survey (1998)
Liu, Charles T., Green, Richard F., Hall, Patrick B., Osmer, Patrick S.
A complete sample of 659 field galaxies with 17.0$
Kennefick, Julia D., Osmer, Patrick S., Hall, Patrick B., Green, Richard F.
We have made spectroscopic identifications of 39 additional quasar candidates from the Deep Multicolor Survey (DMS) of Hall et al. (1996, ApJ, 462, 614, astro-ph/9512052). We have identified 9 new...
I ZW 18 -- a New Wolf-Rayet Galaxy (1997)
Izotov, Yuri I., Foltz, Craig B., Green, Richard F., Guseva, Natalia G., Thuan, Trinh X.
We report the discovery of broad Wolf-Rayet emission lines in the Multiple Mirror Telescope (MMT) spectrum of the NW component of I Zw 18, the lowest-metallicity blue compact dwarf (BCD) galaxy...
The UV Properties of the Narrow Line Quasar I Zwicky 1 (1997)
Laor, Ari, Jannuzi, Buell T., Green, Richard F., Boroson, Todd A.
I Zw 1 is the prototype narrow line quasar. We report here the results of our study of the UV emission of I Zw 1 using a high S/N (50-120) spectrum obtained with the HST FOS. The following main new...
The HST Medium Deep Survey: progress towards resolution of the faint blue galaxy problem (1997)
Griffiths, Richard, Ratnatunga, Kavan U., Casertano, Stefano, Im, Myungshin, Neuschaefer, Lyman W., Ostrander, Eric J., ...
WFPC2 on HST has provided the means to make rapid progress towards solving a long-standing problem in observational cosmology, viz. the nature of the objects contributing to the faint blue galaxy...
The HST Medium Deep Survey: progress towards resolution of the faint blue galaxy problem (1997)
Griffiths, Richard, Ratnatunga, Kavan U., Casertano, Stefano, Im, Myungshin, Neuschaefer, Lyman W., Ostrander, Eric J., ...
WFPC2 on HST has provided the means to make rapid progress towards solving a long-standing problem in observational cosmology, viz. the nature of the objects contributing to the faint blue galaxy...
X-ray Emission from the Host Clusters of Powerful AGN (1996)
Hall, Patrick B., Ellingson, Erica, Green, Richard F.
(Abridged) We report the detection of X-ray emission from the host cluster of the radio-quiet quasar H1821+643 with the ROSAT HRI, and the non-detection of the host cluster of the radio-loud quasar...
Compact Nuclei in Moderately Redshifted Galaxies (1996)
Sarajedini, Vicki L., Green, Richard F., Griffiths, Richard E., Ratnatunga, Kavan U.
The Hubble Space Telescope WFPC2 is being used to obtain high-resolution images in the V and I bands for several thousand distant galaxies as part of the Medium Deep Survey (MDS). An important...
A Deep Multicolor Survey I. Imaging Observations and Catalog of Stellar Objects (1995)
Hall, Patrick B., Osmer, Patrick S., Green, Richard F., Porter, Alain C., Warren, Stephen J.
We have used the KPNO 4-meter Mayall telescope to image 0.83 square degrees of sky in six fields at high galactic latitude in six filters spanning 3000-10000\AA\ to magnitude limits ranging from 22.1...
Hall, Patrick B., Osmer, Patrick S., Green, Richard F., Porter, Alain C., Warren, Stephen J.
We have used the KPNO 4-meter Mayall telescope to image 0.83 square degrees of sky in six fields at high galactic latitude in six filters spanning 3000-10000\AA\ to magnitude limits ranging from 22.1...
Sarajedini, Vicki L., Green, Richard F., Jannuzi, Buell T.
We model the requirements on observational data that would allow an accurate determination of the degree of association between Lyman alpha absorbers and peaks in the redshift distribution of...
A ROSAT Search for X-ray Emission from Quasar Host Clusters (1995)
Hall, Patrick B., Ellingson, Erica, Green, Richard F., Yee, Howard
We report the results of a search for X-ray emission from quasar host clusters at moderate redshift using the {\sl ROSAT} HRI. We detect no emission from the host clusters of 3C~263 (z=0.646) and...
The theta-z relation for HST bulges and disks out to z similar or equal to 0.8 (1994)
Mutz, Steven B., Windhorst, Rogier A., Schmidtke, Paul C., Pascarelle, Sebastian M., Griffiths, Richard E., Ratnatunga, Kavan U., ...
We present HST scale lengths and ground-based redshifts for 63 faint field galaxies down to 1 ≲ 21.5 mag from the Medium-Deep Survey. These have measured redshifts z ≲ 0.8 and half-light...
The morphology of faint galaxies in medium deep survey images using WFPC2 (1994)
Griffiths, Richard, Casertano, Stefano, Ratnatunga, Kavan U., Neuschaefer, Lyman W., Ellis, Richard S., Gilmore, Gerard F., ...
First results from HST Medium Deep Survey images taken with WFPC2 demonstrate that galaxy classifications can be reliably performed to magnitudes I814 less-than-or-similar-to 22.0 in the F815W band....
Windhorst, Rogier A., Schmidtke, Paul C., Pascarelle, Sebastian M., Gordon, J. M., Griffiths, Richard, Ratnatunga, Kavan U., ...
We present isophotal profiles of six faint field galaxies from some of the first deep images taken for the Hubble Space Telescope (HST) Medium Deep Survey (MDS). These have redshifts in the range...
Griffiths, Richard, Ratnatunga, Kavan U., Neuschaefer, Lyman W., Casertano, Stefano, Im, Myungshin, Wyckoff, Eric W., ...
We present results from the Medium Deep Survey (MDS), a Key Project using the Hubble Space Telescope. Wide Field Camera images of random fields have been taken in "parallel mode" with an effective...
The theta-z relation for HST bulges and disks out to z similar or equal to 0.8 (1994)
Mutz, Steven B., Windhorst, Rogier A., Schmidtke, Paul C., Pascarelle, Sebastian M., Griffiths, Richard E., Ratnatunga, Kavan U., ...
We present HST scale lengths and ground-based redshifts for 63 faint field galaxies down to 1 ≲ 21.5 mag from the Medium-Deep Survey. These have measured redshifts z ≲ 0.8 and half-light...
The morphology of faint galaxies in medium deep survey images using WFPC2 (1994)
Griffiths, Richard, Casertano, Stefano, Ratnatunga, Kavan U., Neuschaefer, Lyman W., Ellis, Richard S., Gilmore, Gerard F., ...
First results from HST Medium Deep Survey images taken with WFPC2 demonstrate that galaxy classifications can be reliably performed to magnitudes I814 less-than-or-similar-to 22.0 in the F815W band....
Windhorst, Rogier A., Schmidtke, Paul C., Pascarelle, Sebastian M., Gordon, J. M., Griffiths, Richard, Ratnatunga, Kavan U., ...
We present isophotal profiles of six faint field galaxies from some of the first deep images taken for the Hubble Space Telescope (HST) Medium Deep Survey (MDS). These have redshifts in the range...
Griffiths, Richard, Ratnatunga, Kavan U., Neuschaefer, Lyman W., Casertano, Stefano, Im, Myungshin, Wyckoff, Eric W., ...
We present results from the Medium Deep Survey (MDS), a Key Project using the Hubble Space Telescope. Wide Field Camera images of random fields have been taken in "parallel mode" with an effective...
Thesis (M.S.E.E.)--University of South Florida, 1988.