Ouchi, Masami, Mobasher, Bahram, Shimasaku, Kazuhiro, Ferguson, Henry C., Fall, S. Michael, Ono, Yoshiaki, ...
We present results of our large-area survey for z'-band dropout galaxies at z=7 in a 1568 arcmin^2 sky area covering the SDF and GOODS-N fields. Combining our ultra-deep Subaru/Suprime-Cam z'- and...
Deep Optical Photometry of Six Fields in the Andromeda Galaxy (2009)
Brown, Thomas M., Smith, Ed, Ferguson, Henry C., Guhathakurta, Puragra, Kalirai, Jason S., Kimble, Randy A., ...
Using the Advanced Camera for Surveys on the Hubble Space Telescope, we have obtained deep optical images reaching well below the oldest main sequence turnoff in six fields of the Andromeda Galaxy....
Riess, Adam G., Macri, Lucas, Casertano, Stefano, Sosey, Megan, Lampeitl, Hubert, Ferguson, Henry C., ...
We report observations of 240 Cepheid variables obtained with the Near Infrared Camera (NICMOS) through the F160W filter on the Hubble Space Telescope (HST). The Cepheids are distributed across six...
Cepheid Calibrations of Modern Type Ia Supernovae:Implications for the Hubble Constant (2009)
Riess, Adam G., Macri, Lucas, Li, Weidong, Lampeitl, Hubert, Casertano, Stefano, Ferguson, Henry C., ...
This is the first of two papers reporting measurements from a program to determine the Hubble constant to 5% precision from a refurbished distance ladder. We present new observations of 110 Cepheid...
Evidence for a nonuniform initial mass function in the local universe (2009)
Meurer, Gerhardt R., Wong, O. I., Kim, J. H., Hanish, D. J., Heckman, Timothy M., Werk, Jessica K., ...
Many of the results in modern astrophysics rest on the notion that the initial mass function (IMF) is universal. Our observations of a sample of H I selected galaxies in the light of Hα and the...
Evidence for a nonuniform initial mass function in the local universe (2009)
Meurer, Gerhardt R., Wong, O. I., Kim, J. H., Hanish, D. J., Heckman, Timothy M., Werk, Jessica K., ...
Many of the results in modern astrophysics rest on the notion that the initial mass function (IMF) is universal. Our observations of a sample of H I selected galaxies in the light of Hα and the...
Lee, Seong-Kook, Idzi, Rafal, Ferguson, Henry C., Somerville, Rachel S., Wiklind, Tommy, Giavalisco, Mauro
We investigate the biases and uncertainties in estimates of physical parameters of high-redshift Lyman break galaxies (LBGs), such as stellar mass, mean stellar population age, and star formation...
The WFC3 Galactic Bulge Treasury Program: A First Look at Resolved Stellar Population Tools (2008)
Brown, Thomas M., Sahu, Kailash, Zoccali, Manuela, Renzini, Alvio, Ferguson, Henry C., Anderson, Jay, ...
[Abridged] When WFC3 is installed on HST, the community will have powerful new tools for investigating resolved stellar populations. The WFC3 Galactic Bulge Treasury program will obtain deep imaging...
The Extended Star Formation History of the Andromeda Spheroid at 35 Kpc on the Minor Axis (2008)
Brown, Thomas M., Beaton, Rachael, Chiba, Masashi, Ferguson, Henry C., Gilbert, Karoline M., Guhathakurta, Puragra, ...
Using the HST ACS, we have obtained deep optical images reaching well below the oldest main sequence turnoff in fields on the southeast minor-axis of the Andromeda Galaxy, 35 kpc from the nucleus....
The Dearth of UV-Bright Stars in M32: Implications for Stellar Evolution Theory (2008)
Brown, Thomas M., Smith, Ed, Ferguson, Henry C., Sweigart, Allen V., Kimble, Randy A., Bowers, Charles W.
Using the Space Telescope Imaging Spectrograph on the Hubble Space Telescope, we have obtained deep far-ultraviolet images of the compact elliptical galaxy M32. When combined with earlier...
The HST/ACS Coma Cluster Survey: I - Survey Objectives and Design (2008)
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
We describe the HST ACS Coma cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma cluster (Abell 1656). The survey was designed to...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
We describe the HST ACS Coma Cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma Cluster (Abell 1656). The survey was designed to...
Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...
We describe the HST ACS Coma Cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma Cluster (Abell 1656). The survey was designed to...
UV Emission from Elliptical Galaxies (2007)
Near And Far, Henry C. Ferguson, Thomas M. Brown
The far-ultraviolet is the most rapidly evolving portion of the spectrum in both very young galaxies and very old galaxies. The "UV upturn" in the spectra of elliptical galaxies shortward...
Redshifts of Emission-Line Objects in the Hubble Ultra Deep Field (2007)
Xu, Chun, Pirzkal, Norbert, Malhotra, Sangeeta, Rhoads, James E., Mobasher, Bahram, Daddi, Emanuele, ...
We present redshifts for 115 emission-line objects in the Hubble Ultra Deep Field identified through the Grism ACS Program for Extragalactic Science (GRAPES) project using the slitless grism...
New Constraints on the Lyman Continuum Escape Fraction at z~1.3 (2007)
Siana, Brian, Teplitz, Harry I., Colbert, James, Ferguson, Henry C., Dickinson, Mark, Brown, Thomas M., ...
We examine deep far-ultraviolet (1600 Angstrom) imaging of the Hubble Deep Field-North (HDFN) and the Hubble Ultra Deep Field (HUDF) to search for leaking Lyman continuum radiation from starburst...
Brown, Thomas M., Smith, Ed, Ferguson, Henry C., Guhathakurta, Puragra, Kalirai, Jasonjot S., Rich, R. Michael, ...
Using the HST ACS, we have obtained deep optical images of a southeast minor-axis field in the Andromeda Galaxy, 21 kpc from the nucleus. In both star counts and metallicity, this field represents a...
Redshifts of Emission Line Objects in the Hubble Ultra Deep Field (2007)
Xu, Chun, Pirzkal, Norbert, Malhotra, Sangeeta, Rhoads, James E., Mobasher, Bahram, Daddi, Emanuele, ...
We present redshifts for 115 emission line objects in the Hubble Ultra Deep Field (HUDF) identified through the GRism ACS Program for Extragalactic Science (GRAPES) project using the slitless grism...
Virgo's intracluster globular clusters as seen by the advanced camera for surveys (2007)
Williams, Benjamin F., Ciardullo, Robin, Durrell, Patrick R., Feldmeier, John J., Sigurdsson, Steinn, Vinciguerra, Matt, ...
The metallicity distribution of intracluster stars in Virgo (2007)
Williams, Benjamin F., Ciardullo, Robin, Durrell, Patrick R., Vinciguerra, Matt, Feldmeier, John J., Jacoby, George H., ...
The resolved stellar populations of a dwarf spheroidal galaxy in the Virgo cluster (2007)
Durrell, Patrick R., Williams, Benjamin F., Ciardullo, Robin, Feldmeier, John J., Von Hippel, Ted, Sigurdsson, Steinn, ...
Redshifts of emission-line objects in the Hubble Ultra Deep Field (2007)
Xu, Chun, Pirzkal, Norbert, Malhotra, Sangeeta, Rhoads, James E., Mobasher, Bahram, Daddi, Emanuele, ...
We present redshifts for 115 emission-line objects in the Hubble Ultra Deep Field identified through the Grism ACS Program for Extragalactic Science (GRAPES) project using the slitless grism...
Oey, M. Sally, Meurer, Gerhardt R., Yelda, Sylvana, Furst, E. J., Caballero-Nieves, S. M., Hanish, D. J., ...
We use the first data release from the SINGG Hα survey of H I-selected galaxies to study the quantitative behavior of the diffuse, warm ionized medium (WIM) across the range of properties...
Oey, M. Sally, Meurer, Gerhardt R., Yelda, Sylvana, Furst, E. J., Caballero-Nieves, S. M., Hanish, D. J., ...
We use the first data release from the SINGG Hα survey of H I-selected galaxies to study the quantitative behavior of the diffuse, warm ionized medium (WIM) across the range of properties...
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...
Discovery of thirteen novae candidates in M87 (2006)
Madrid, Juan P., Sparks, William B., Ferguson, Henry C., Livio, Mario, Macchetto, Duccio
We have made thirteen positive identifications of near-ultraviolet (NUV) transient sources in the giant elliptical galaxy M87 using the Space Telescope Imaging Spectrograph (STIS) on board the Hubble...
Riess, Adam G., Strolger, Louis-Gregory, Casertano, Stefano, Ferguson, Henry C., Mobasher, Bahram, Gold, Ben, ...
We have discovered 21 new Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to trace the history of cosmic expansion over the last 10 billion years. These objects,...
The Resolved Stellar Populations of a Dwarf Spheroidal Galaxy in the Virgo Cluster (2006)
Durrell, Patrick R., Williams, Benjamin F., Ciardullo, Robin, Feldmeier, John J., Von Hippel, Ted, Sigurdsson, Steinn, ...
We report on the discovery of a faint (M_V ~ -10.6 +/- 0.2) dwarf spheroidal galaxy on deep F606W and F814W Hubble Space Telescope images of a Virgo intracluster field. The galaxy is easily resolved...
The Metallicity Distribution of Intracluster Stars in Virgo (2006)
Williams, Benjamin F., Ciardullo, Robin, Durrell, Patrick R., Vinciguerra, Matt, Feldmeier, John J., Jacoby, George H., ...
We have used the Hubble Space Telescope's Advanced Camera for Surveys (ACS) to detect and measure ~5300 stars in a single intracluster field in the Virgo Cluster. By performing F606W and F814W...
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...
Virgo's Intracluster Globular Clusters as Seen by the Advanced Camera for Surveys (2006)
Williams, Benjamin F., Ciardullo, Robin, Durrell, Patrick R., Feldmeier, John J., Sigurdsson, Steinn, Vinciguerra, Matt, ...
We report the discovery of 4 candidate intracluster globular clusters (IGCs) in a single deep HST ACS field of the Virgo Cluster. We show that each cluster is roughly spherical, has a magnitude near...
Dahlen, Tomas, Mobasher, Bahram, Dickinson, Mark, Ferguson, Henry C., Giavalisco, Mauro, Kretchmer, Claudia, ...
Using the multiwavelength photometric and spectroscopic data covering the CDF-S obtained within the GOODS, we investigate the rest-frame UV properties of galaxies to z~2.2, including the evolution of...
TPF-C : status and recent progress (2006)
Traub, Wesley A., Levine, Marie, Shaklan, Stuart, Kasting, James, Angel, J. Roger, Brown, Michael E., ...
The Terrestrial Planet Finder Coronagraph (TPF-C) is a deep space mission designed to detect and characterize Earthlike planets around nearby stars. TPF-C will be able to search for signs of life on...
Brown, Thomas M., Smith, Ed, Ferguson, Henry C., Rich, R. Michael, Guhathakurta, Puragra, Renzini, Alvio, ...
Using the Advanced Camera for Surveys on the Hubble Space Telescope, we have obtained deep optical images reaching stars well below the oldest main sequence turnoff in the spheroid, tidal stream, and...
The Hubble Ultra Deep Field (2006)
Beckwith, Steven V. W., Stiavelli, Massimo, Koekemoer, Anton M., Caldwell, John A. R., Ferguson, Henry C., Hook, Richard, ...
This paper presents the Hubble Ultra Deep Field (HUDF), a one million second exposure of an 11 square minute-of-arc region in the southern sky with the Hubble Space Telescope. The exposure time was...
Yan, Haojing, Dickinson, Mark, Giavalisco, Mauro, Stern, Daniel, Eisenhardt, Peter R. M., Ferguson, Henry C.
Using the deep Spitzer IRAC observations of the Great Observatories Origins Deep Survey (GOODS), we study the stellar masses and star formation histories of galaxies at z ~ 6. Our study is based on...
The large-scale and small-scale clustering of Lyman Break Galaxies at 3.5 (2006)
Lee, Kyoung-Soo, Giavalisco, Mauro, Gnedin, Oleg Y., Somerville, Rachel S., Ferguson, Henry C., Dickinson, Mark, ...
We report on the angular correlation function of Lyman break galaxies (LBGs) at z~4 and 5 from deep samples obtained from the Great Observatories Deep Origins Survey (GOODS). As for LBGs at z~3, the...
The Hubble Ultra Deep Field (2006)
Beckwith, Steven V. W., Stiavelli, Massimo, Koekemoer, Anton M., Caldwell, John A. R., Ferguson, Henry C., Hook, Richard, ...
This paper presents the Hubble Ultra Deep Field (HUDF), a 1 million s exposure of an 11 arcmin2 region in the southern sky with the Advanced Camera for Surveys on the Hubble Space Telescope using...
Hanish, D. J., Meurer, Gerhardt R., Ferguson, Henry C., Zwaan, Martin A., Heckman, Timothy M., Staveley-Smith, Lister, ...
Abstract not available.
The survey for ionization in neutral gas galaxies I : description and initial results (2006)
Meurer, Gerhardt R., Hanish, D. J., Ferguson, Henry C., Knezek, Patricia M., Kilborn, Virginia A., Putman, Mary E., ...
Abstract not available.
NGC 922 : a new drop-through ring galaxy (2006)
Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...
We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...
NGC 922 : a new drop-through ring galaxy (2006)
Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...
We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...
The survey for ionization in neutral gas galaxies I : description and initial results (2006)
Meurer, Gerhardt R., Hanish, D. J., Ferguson, Henry C., Knezek, Patricia M., Kilborn, Virginia A., Putman, Mary E., ...
Abstract not available.
Hanish, D. J., Meurer, Gerhardt R., Ferguson, Henry C., Zwaan, Martin A., Heckman, Timothy M., Staveley-Smith, Lister, ...
Abstract not available.
NGC 922 : a new drop-through ring galaxy (2006)
Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...
We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...
The survey for ionization in neutral gas galaxies I : description and initial results (2006)
Meurer, Gerhardt R., Hanish, D. J., Ferguson, Henry C., Knezek, Patricia M., Kilborn, Virginia A., Putman, Mary E., ...
Abstract not available.
Hanish, D. J., Meurer, Gerhardt R., Ferguson, Henry C., Zwaan, Martin A., Heckman, Timothy M., Staveley-Smith, Lister, ...
Abstract not available.
Hanish, D. J., Meurer, Gerhardt R., Ferguson, Henry C., Zwaan, Martin A., Heckman, Timothy M., Staveley-Smith, Lister, ...
Abstract not available.
NGC 922 : a new drop-through ring galaxy (2006)
Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...
We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...
The survey for ionization in neutral gas galaxies I : description and initial results (2006)
Meurer, Gerhardt R., Hanish, D. J., Ferguson, Henry C., Knezek, Patricia M., Kilborn, Virginia A., Putman, Mary E., ...
Abstract not available.
The survey for ionization in neutral gas galaxies I : description and initial results (2006)
Meurer, Gerhardt R., Hanish, D. J., Ferguson, Henry C., Knezek, Patricia M., Kilborn, Virginia A., Putman, Mary E., ...
Abstract not available.
NGC 922 : a new drop-through ring galaxy (2006)
Wong, O., Meurer, Gerhardt R., Bekki, Kenji, Hanish, D. J., Kennicutt, Robert C., Bland-Hawthorn, Jonathan, ...
We have found the peculiar galaxy NGC 922 to be a new drop-through ring galaxy using multiwavelength (ultraviolet-radio) imaging and spectroscopic observations. Its 'C'-shaped morphology and tidal...
Hanish, D. J., Meurer, Gerhardt R., Ferguson, Henry C., Zwaan, Martin A., Heckman, Timothy M., Staveley-Smith, Lister, ...
Abstract not available.
Brown, Thomas M., Smith, Ed, Guhathakurta, Puragra, Rich, R. Michael, Ferguson, Henry C., Renzini, Alvio, ...
We present a color-magnitude diagram (CMD) for a field in the giant tidal stream of the Andromeda galaxy (M31). These observations, taken with the Advanced Camera for Surveys on the Hubble Space...
Lee, Kyoung-Soo, Giavalisco, Mauro, Gnedin, Oleg Y., Somerville, Rachel S., Ferguson, Henry C., Dickinson, Mark, ...
We report on the angular correlation function of Lyman-break galaxies (LBGs) at z~4 and 5 from deep samples obtained from the Great Observatories Deep Origins Survey (GOODS). Similar to LBGs at z~3,...
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....
Stellar Cluster Fiducial Sequences with the Advanced Camera for Surveys (2005)
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Guhathakurta, Puragra, Kimble, Randy A., Sweigart, Allen V., ...
We present color-magnitude diagrams of five Galactic globular clusters and one Galactic open cluster spanning a wide range of metallicity (-2.1 < [Fe/H] < +0.3), as observed in the F606W (broad V)...
Dahlen, Tomas, Mobasher, Bahram, Somerville, Rachel S., Moustakas, Leonidas A., Dickinson, Mark, Ferguson, Henry C., ...
Using Hubble Space Telescope and ground-based U through K- band photometry from the Great Observatories Origins Deep Survey (GOODS), we measure the evolution of the luminosity function and luminosity...
Papovich, Casey, Dickinson, Mark, Giavalisco, Mauro, Conselice, Christopher J., Ferguson, Henry C.
We have studied the evolution in the morphologies, sizes, stellar-masses, colors, and internal color dispersion (ICD) of galaxies at z=1 and 2.3, using a near-IR, flux-limited catalog for the HDF-N....
Age Constraints for an M31 Globular Cluster from Main Sequence Photometry (2004)
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Kimble, Randy A., Sweigart, Allen V., Renzini, Alvio, ...
We present a color-magnitude diagram (CMD) of the globular cluster SKHB-312 in the Andromeda galaxy (M31), obtained with the Advanced Camera for Surveys on the Hubble Space Telescope. The cluster was...
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...
A Redshift z=5.4 Lyman alpha Emitting Galaxy with Linear Morphology in the GRAPES/UDF Field (2004)
Rhoads, James E., Panagia, Nino, Windhorst, Rogier A., Malhotra, Sangeeta, Pirzkal, Norbert, Xu, Chun, ...
We have discovered an extended Lyman alpha plume associated with a compact source at redshift 5.4 in slitless spectroscopic data from the Grism ACS Program for Extragalactic Science (GRAPES) project....
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...
The Colors of Dwarf Elliptical Galaxy Globular Cluster Systems, Nuclei and Stellar Halos (2004)
Lotz, Jennifer M., Miller, Bryan W., Ferguson, Henry C.
We present the results of a Hubble Space Telescope WFPC2 F555W and F814W survey of 69 dwarf elliptical galaxies (dEs) in the Virgo and Fornax Clusters and Leo Group. The $V-I$ colors of the dE...
Riess, Adam G., Strolger, Louis-Gregory, Tonry, John, Casertano, Stefano, Ferguson, Henry C., Mobasher, Bahram, ...
We have discovered 16 Type Ia supernovae (SNe Ia) with the Hubble Space Telescope (HST) and have used them to provide the first conclusive evidence for cosmic deceleration that preceded the current...
RR Lyrae Stars in the Andromeda Halo from Deep Imaging with the Advanced Camera for Surveys (2004)
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Kimble, Randy A., Sweigart, Allen V., Renzini, Alvio, ...
We present a complete census of RR Lyrae stars in a halo field of the Andromeda galaxy. These deep observations, taken as part of a program to measure the star formation history in the halo, spanned...
Ultra-compact dwarf galaxies in galaxy clusters (2004)
Drinkwater, Michael J., Gregg, Michael D., Couch, Warrick J., Ferguson, Henry C., Hilker, Michael, Jones, J. Bryn, ...
We review the evidence that the ultra-compact dwarf (UCD) galaxies we recently discovered in the Fornax Cluster form a new, previously unknown class of galaxies and we discuss possible scenarios for...
Ultra-compact dwarf galaxies in galaxy clusters (2004)
Drinkwater, Michael J., Gregg, Michael D., Couch, Warrick J., Ferguson, Henry C., Hilker, Michael, Jones, J. Bryn, ...
We review the evidence that the ultra-compact dwarf (UCD) galaxies we recently discovered in the Fornax Cluster form a new, previously unknown class of galaxies and we discuss possible scenarios for...
Resolving the Stellar Population of the Standard Elliptical Galaxy NGC3379 (2003)
Gregg, Michael D., Ferguson, Henry C., Minniti, Dante, Tanvir, Nial, Catchpole, Robin
Using the Near Infrared Camera and Multi-Object Spectrometer (NICMOS) on board the Hubble Space Telescope, we have obtained F110W (J-band) and F160W (H-band) images of three fields in NGC3379, a...
Evolution in the Colors of Lyman-Break Galaxies from Z~4 to Z~3 (2003)
Papovich, Casey, Dickinson, Mark, Ferguson, Henry C., Giavalisco, Mauro, Lotz, Jennifer, Madau, Piero, ...
The integrated colors of distant galaxies provide a means for interpreting the properties of their stellar content. Here, we use rest-frame UV-to-optical colors to constrain the spectral-energy...
Intergalactic Globular Clusters (2003)
West, Michael J., Cote, Patrick, Ferguson, Henry C., Gregg, Michael D., Jordan, Andres, Marzke, Ronald O., ...
We confirm and extend our previous detection of a population of intergalactic globular clusters in Abell 1185, and report the first discovery of an intergalactic globular cluster in the nearby Virgo...
Park, Yousin, Casertano, Stefano, Ferguson, Henry C.
We present three-epoch multiband ($V_{606}$, $i_{775}$, $z_{850}$) measurements of galaxy shapes using the ``polar shapelet'' or Laguerre-expansions method with the Hubble Space Telescope ($HST$)...
Moustakas, Leonidas A., Casertano, Stefano, Conselice, Chris, Dickinson, Mark E., Eisenhardt, Peter, Ferguson, Henry C., ...
Using U'- through Ks-band imaging data in the GOODS-South field, we construct a large, complete sample of 275 ``extremely red objects'' (EROs; K_s3.35; AB), all with deep HST/ACS imaging in B_435,...
The Size Evolution of High Redshift Galaxies (2003)
Ferguson, Henry C., Dickinson, Mark, Giavalisco, Mauro, Kretchmer, Claudia, Ravindranath, Swara, Idzi, Rafal, ...
Hubble Space Telescope images of high-redshift galaxies selected via color and photometric redshifts are used to examine the size and axial-ratio distribution of galaxies as a function of redshift at...
Cosmic Variance in the Great Observatories Origins Deep Survey (2003)
Somerville, Rachel S., Lee, Kyoungsoo, Ferguson, Henry C., Gardner, Jonathan P., Moustakas, Leonidas A., Giavalisco, Mauro
Cosmic variance is the uncertainty in observational estimates of the volume density of extragalactic objects such as galaxies or quasars arising from the underlying large-scale density fluctuations....
The z ~ 4 Lyman Break Galaxies: Colors and Theoretical Predictions (2003)
Idzi, Rafal, Somerville, Rachel, Papovich, Casey, Ferguson, Henry C., Giavalisco, Mauro, Kretchmer, Claudia, ...
We investigate several fundamental properties of z ~ 4 Lyman-break galaxies by comparing observations with the predictions of a semi-analytic model based on the Cold Dark Matter theory of...
Papovich, Casey, Giavalisco, Mauro, Dickinson, Mark, Conselice, Christopher J., Ferguson, Henry C.
We present a quantitative measure of the internal color dispersion within galaxies, which quantifies differences in morphology as a function of wavelength. We apply this statistic to a local galaxy...
Riess, Adam G., Strolger, Louis-Gregory, Tonry, John, Tsvetanov, Zlatan, Casertano, Stefano, Ferguson, Henry C., ...
We present discoveries of SNe Ia at z > 1 and the photometric diagnostic used to discriminate them from other types of SNe detected during the GOODS Hubble Space Telescope Treasury program with the...
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Kimble, Randy A., Sweigart, Allen V., Renzini, Alvio, ...
We present a color-magnitude diagram (CMD) for a minor-axis field in the halo of the Andromeda galaxy (M31), 51 arcmin (11 kpc) from the nucleus. These observations, taken with the Advanced Camera...
Gravitational Lensing by Burkert Halos (2003)
Park, Yousin, Ferguson, Henry C.
We investigate the gravitational lensing properties of dark matter halos with Burkert profiles. We derive an analytic expression for the lens equation and use it to compute the magnification, impact...
Galaxy Threshing and Ultra-Compact Dwarfs in the Fornax Cluster (2003)
Gregg, Michael D., Drinkwater, Michael J., Hilker, Michael J., Phillipps, Steven, Jones, J. Bryn, Ferguson, Henry C.
We have discovered a new type of galaxy in the Fornax Cluster: ``ultra-compact'' dwarfs (UCDs). The UCDs are unresolved in ground-based imaging and have spectra typical of old stellar systems....
Far-Ultraviolet Emission from Elliptical Galaxies at z=0.33 (2003)
Brown, Thomas M., Ferguson, Henry C., Smith, Ed, Bowers, Charles W., Kimble, Randy A., Renzini, Alvio, ...
We present far-ultraviolet (far-UV) images of the rich galaxy cluster ZwCl1358.1+6245, taken with the Space Telescope Imaging Spectrograph on board the Hubble Space Telescope (HST). When combined...
A class of compact dwarf galaxies from disruptive processes in galaxy clusters (2003)
Drinkwater, Michael John, Gregg, Michael D., Hilker, Michael, Bekki, Kenji, Couch, Warrick J., Ferguson,Henry C., ...
Dwarf galaxies have attracted increased attention in recent years, because of their susceptibility to galaxy transformation processes within rich galaxy clusters. Direct evidence for these processes,...
A class of compact dwarf galaxies from disruptive processes in galaxy clusters (2003)
Drinkwater, Michael John, Gregg, Michael D., Hilker, Michael, Bekki, Kenji, Couch, Warrick J., Ferguson, Henry C., ...
Dwarf galaxies have attracted increased attention in recent years, because of their susceptibility to galaxy transformation processes within rich galaxy clusters. Direct evidence for these processes,...
A class of compact dwarf galaxies from disruptive processes in galaxy clusters (2003)
Drinkwater, Michael John, Gregg, Michael D., Hilker, Michael, Bekki, Kenji, Couch, Warrick J., Ferguson, Henry C., ...
Dwarf galaxies have attracted increased attention in recent years, because of their susceptibility to galaxy transformation processes within rich galaxy clusters. Direct evidence for these processes,...
Drinkwater, Michael J., Gregg, Michael D., Hilker, Michael J., Bekki, Kenji, Couch, W. J., Ferguson, Henry C., ...
Dwarf galaxies have attracted increased attention in recent years, because of their susceptibility to galaxy transformation processes within rich galaxy clusters. Direct evidence for these processes,...
Drinkwater, Michael J., Gregg, Michael D., Hilker, Michael J., Bekki, Kenji, Couch, W. J., Ferguson, Henry C., ...
Dwarf galaxies have attracted increased attention in recent years, because of their susceptibility to galaxy transformation processes within rich galaxy clusters. Direct evidence for these processes,...
The Hubble Deep Field South Flanking Fields (2002)
Lucas, Ray A., Baum, Stefi A., Brown, Thomas M., Casertano, Stefano, Conselice, Chris, De Mello, Duilia, ...
As part of the Hubble Deep Field South program, a set of shorter 2-orbit observations were obtained of the area adjacent to the deep fields. The WFPC2 flanking fields cover a contiguous solid angle...
The Evolution of the Global Stellar Mass Density at 0 < z < 3 (2002)
Dickinson, Mark, Papovich, Casey, Ferguson, Henry C., Budavari, Tamas
The build-up of stellar mass in galaxies is the consequence of their past star formation and merging histories. Here we report measurements of rest-frame optical light and calculations of stellar...
Using M32 to Study Rapid Phases of Stellar Evolution (2002)
Brown, Thomas M., Ferguson, Henry C., Sweigart, Allen V., Kimble, Randy A., Bowers, Charles W.
The compact elliptical galaxy M32 offers a unique testing ground for theories of stellar evolution. Because of its proximity, solar-blind UV observations can resolve the hot evolved stars in its...
Lyman Break Galaxies and the Reionization of the Intergalactic Medium (2002)
Ferguson, Henry C., Dickinson, Mark, Papovich, Casey
Near-infrared observations of Lyman-break galaxies at redshifts z~3 are beginning to provide constraints on ages, star-formation histories, dust content, metallicities, and stellar masses. At...
Lyman Break Galaxies in the NGST Era (2002)
Ferguson, Henry C., Dickinson, Mark, Papovich, Casey
With SIRTF and NGST in the offing, it is interesting to examine what the stellar populations of z~3 galaxies models imply for the existence and nature of Lyman-break galaxies at higher redshift. To...
Brown, Thomas M., Ferguson, Henry C., O'Connell, Robert W., Ohl, Raymond G.
We present far-UV spectroscopy of the giant elliptical galaxy NGC 1399, obtained with the Far Ultraviolet Spectroscopic Explorer. Of all quiescent ellipticals, NGC 1399 has the strongest known ``UV...
Deep Near-Infrared Imaging Surveys and the Stellar Content of High Redshift Galaxies (2001)
Dickinson, Mark, Papovich, Casey, Ferguson, Henry C.
Deep, near-infrared imaging surveys have been motivated by the desire to study the rest-frame optical properties and stellar content of galaxies at high redshift. Here we briefly review their...
The Stellar Populations and Evolution of Lyman Break Galaxies (2001)
Papovich, Casey, Dickinson, Mark, Ferguson, Henry C.
Using deep near-IR and optical observations of the HDF-N from the HST NICMOS and WFPC2 and from the ground, we examine the spectral energy distributions (SEDs) of Lyman break galaxies (LBGs) at 2.0 <...
Dynamical Friction in dE Globular Cluster Systems (2001)
Lotz, Jennifer M., Telford, Rosemary, Ferguson, Henry C., Miller, Bryan W., Stiavelli, Massimo, Mack, Jennifer
The dynamical friction timescale for globular clusters to sink to the center of a dwarf elliptical galaxy (dE) is significantly less than a Hubble time if the halos have King-model or isothermal...
The Hubble Deep Field in the Far Ultraviolet (2001)
Results from a recent HST survey of field galaxies at wavelengths 1600 Angstroms and 2400 Angstroms are be presented. The data are used to constrain the fraction of Lyman-continuum radiation that...
WFPC2 Observations of the Hubble Deep Field-South (2000)
Casertano, Stefano, De Mello, Duilia, Dickinson, Mark, Ferguson, Henry C., Fruchter, Andrew S., Gonzalez-Lopezlira, Rosa A., ...
The Hubble Deep Field-South observations targeted a high-galactic-latitude field near QSO J2233-606. We present WFPC2 observations of the field in four wide bandpasses centered at roughly 300, 450,...
Ultraviolet Galaxy Counts from STIS Observations of the Hubble Deep Fields (2000)
Gardner, Jonathan P., Brown, Thomas M., Ferguson, Henry C.
We present galaxy counts in the near-ultraviolet (NUV; 2365\AA) and far-ultraviolet (FUV; 1595\AA) obtained from Space Telescope Imaging Spectrograph (STIS) observations of portions of the Hubble...
An Emission-Line Search for Star-Forming Dwarf Galaxies Toward Abell 851 (2000)
Martin, Crystal, Lotz, Jennifer, Ferguson, Henry C.
(Abridged) We present deep, narrow-band images of the redshift 0.41 galaxy cluster Abell 851 (Cl 0939+4713) which isolate [OII] 3726,29 line emission. The [OII]-selected galaxies lie within a...
Ferguson, Henry C., Dickinson, Mark, Williams, Robert
The Hubble space telescope observations of the northern Hubble deep field, and more recently its counterpart in the south, provide detections and photometry for stars and field galaxies to the...
Brown, Thomas M., Kimble, Randy A., Ferguson, Henry C., Gardner, Jonathan P., Collins, Nicholas R., Hill, Robert S.
Far-UV observations in and near the Hubble Deep Fields demonstrate that the Space Telescope Imaging Spectrograph (STIS) can potentially obtain unique and precise measurements of the diffuse...
Far-UV Emission from Elliptical Galaxies at z=0.55 (1999)
Brown, Thomas M., Bowers, Charles W., Kimble, Randy A., Ferguson, Henry C.
The restframe UV-to-optical flux ratio, characterizing the ``UV upturn'' phenomenon, is potentially the most sensitive tracer of age in elliptical galaxies; models predict that it may change by...
Mid-UV Determination of Elliptical Galaxy Abundances and Ages (1999)
Lotz, Jennifer M., Ferguson, Henry C., Bohlin, Ralph C.
We investigate the effects of abundance and age on the mid-UV spectra and Mg_{2} strengths of stellar populations using simple population synthesis models. These models are used to constrain the star...
Detection and Photometry of Hot Horizontal Branch Stars in the Core of M32 (1999)
Brown, Thomas M., Bowers, Charles W., Kimble, Randy A., Sweigart, Allen V., Ferguson, Henry C.
We present the deepest near-UV image of M32 to date, which for the first time resolves hot HB stars in an elliptical galaxy. Given the near-solar metallicity of M32, much larger than that of globular...
The Unusual Infrared Object HDF-N J123656.3+621322 (1999)
Dickinson, Mark, Hanley, Christopher, Elston, Richard, Eisenhardt, Peter R., Stanford, S. A., Adelberger, Kurt L., ...
We describe an object in the Hubble Deep Field North with very unusual near-infrared properties. It is readily visible in Hubble Space Telescope NICMOS images at 1.6um and from the ground at 2.2um,...
Measurements of Far-UV Emission from Elliptical Galaxies at z=0.375 (1998)
Brown, Thomas M., Ferguson, Henry C., Deharveng, Jean-Michel, Jedrzejewski, Robert I.
The ``UV upturn'' is a sharp rise in spectra of elliptical galaxies shortward of rest-frame 2500 A. It is a ubiquitous phenomenon in nearby giant elliptical galaxies, and is thought to arise...
Detection of intergalactic red-giant-branch stars in the Virgo cluster (1998)
Ferguson, Henry C., Tanvir, Nial R., Von Hippel, Ted
It has been suspected for nearly 50 years that clusters of galaxies contain a population of intergalactic stars, ripped from galaxies during cluster formation or when the galaxies' orbits take them...
The Hubble Deep Field and the Disappearing Dwarf Galaxies (1998)
Ferguson, Henry C., Babul, Arif
Several independent lines of reasoning suggest that many of the very faint (B > 24) blue galaxies are low-mass objects that experienced a short epoch of star formation at redshifts 0.5 < z < 1 and...
Selection Effects and Robust Measures of Galaxy Evolution (1998)
A variety of subtle, and not-so-subtle selection effects influence the interpretation of galaxy counts, sizes and redshift distributions in the Hubble Deep Field. Comparison of the different HDF...
Imaging and spectroscopy of arcs around the most luminous X-ray cluster RX J1347.5-1145 (1997)
Sahu, Kailash C., Shaw, Richard A., Kaiser, Mary Elizabeth, Baum, Stefi A., Ferguson, Henry C., Hayes, Jeffrey J. E., ...
The cluster RX J1347.5-1145, the most luminous cluster in the X-ray wavelengths, was imaged with the newly installed Space Telescope Imaging Spectrograph (STIS) on-board HST. Its relatively high...
UV Emission from Elliptical Galaxies Near and Far (1997)
Ferguson, Henry C., Brown, Thomas M.
The far-ultraviolet is the most rapidly evolving portion of the spectrum in both very young galaxies and very old galaxies. The ``UV upturn'' in the spectra of elliptical galaxies shortward of 2000...
Madau, Piero, Ferguson, Henry C., Dickinson, Mark E., Giavalisco, Mauro, Steidel, Charles C., Fruchter, Andrew
The Lyman decrement associated with the cumulative effect of HI in QSO absorption systems along the line of sight provides a distinctive feature for identifying galaxies at z>2.5. The Hubble Deep...
Dixon, W. Van Dyke, Hurwitz, Mark, Ferguson, Henry C.
We have searched the far-UV spectra of five clusters of galaxies observed with the Hopkins Ultraviolet Telescope (HUT) for emission in the resonance lines of O VI (1032,1038 A) and C IV (1548,1551...
Faint Blue Galaxies and the Epoch of Dwarf-Galaxy Formation (1995)
Babul, Arif, Ferguson, Henry C.
Both theoretical and observational lines of reasoning suggest that the very faint (B > 24) galaxies seen in deep images of the sky are small low-mass galaxies that experienced starburst at 0.5
Dwarf Elliptical Galaxies (1994)
Ferguson, Henry C., Binggeli, Bruno
Dwarf elliptical (dE) galaxies, with blue absolute magnitudes typically fainter than $M_B = -16$, are the most numerous type of galaxy in the nearby universe. Tremendous advances have been made over...
The Contribution of Low Surface-Brightness Galaxies to Faint Galaxy Counts (1994)
Ferguson, Henry C., McGaugh, Stacy S.
Low Surface-Brightness (LSB) galaxies are severely underrepresented in surveys used to define the local luminosity function (LF), but could it in principle be detected in deep surveys. To explore the...
Population studies in groups and clusters of galaxies / (1989)
Thesis (Ph. D.)--Johns Hopkins University, 1989.
Population studies in groups and clusters of galaxies / (1989)
Thesis (Ph. D.)--Johns Hopkins University, 1990.