4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of California, Santa CruzUS948 papers
- Space Telescope Science InstituteUS207 papers
- Center for Astrophysics Harvard & SmithsonianUS153 papers
- Max Planck Institute for AstronomyDE138 papers
- University of ArizonaUS127 papers
- University of California, BerkeleyUS127 papers
- California Institute of TechnologyUS126 papers
- Carnegie ObservatoriesUS120 papers
- Carnegie Institution for ScienceUS113 papers
- Swinburne University of TechnologyAU107 papers
- European Southern ObservatoryCL103 papers
- Yale UniversityUS94 papers
27 papers · 2 filters
The Persistence of Cool Galactic Winds in High Stellar Mass Galaxies Between z~1.4 and ~1
Kate H. R. Rubin, Benjamin J. Weiner, David C. Koo +4
We present an analysis of the MgII 2796, 2803 and FeII 2586, 2600 absorption line profiles in coadded spectra of 468 galaxies at 0.7 < z < 1.5. The galaxy sample, drawn from the Te…
A Definitive Survey for Lyman Limit Systems at z~3.5 with the Sloan Digital Sky Survey
J. Xavier Prochaska, John M. O'Meara, Gabor Worseck
We perform a semi-automated survey for tau>=2 Lyman Limit systems (LLSs) in quasar spectra from the Sloan Digital Sky Survey, Data Release 7. From a starting sample of 2473 quasars…
A Blue Tilt in the Globular Cluster System of the Milky Way-like Galaxy NGC 5170
Duncan Forbes, Lee Spitler, William Harris +4
Here we present HST/ACS imaging, in the B and I bands, of the edge-on Sb/Sc galaxy NGC 5170. Excluding the central disk region region, we detect a 142 objects with colours and size…
Major Merging: The Way to Make a Massive, Passive Galaxy
Arjen van der Wel, Hans-Walter Rix, Bradford P. Holden +2
We analyze the projected axial ratio distribution, p(b/a), of galaxies that were spectroscopically selected from the Sloan Digital Sky Survey (DR6) to have low star-formation rates…
Spitzer Observations of Passive and Star Forming Early-type Galaxies: an Infrared Color-Color Sequence
Pasquale Temi, Fabrizio Brighenti, William G. Mathews
We describe the infrared properties of a large sample of early type galaxies, comparing data from the Spitzer archive with Ks-band emission from 2MASS. While most representations o…
Active Galactic Nuclei in Groups and Clusters of Galaxies: Detection and Host Morphology
Timothy J. Arnold, Paul Martini, John S. Mulchaey +2
The incidence and properties of Active Galactic Nuclei (AGN) in the field, groups, and clusters can provide new information about how these objects are triggered and fueled, simila…
Simulating X-ray Supercavities and Their Impact on Galaxy Clusters
Fulai Guo, William G. Mathews
Recent X-ray observations of hot gas in the galaxy cluster MS 0735.6+7421 reveal huge radio-bright, quasi-bipolar X-ray cavities having a total energy ~10^{62} ergs, the most energ…
Local Group Dwarf Elliptical Galaxies: II. Stellar Kinematics to Large Radii in NGC 147 and NGC 185
M. Geha, R. P. van der Marel, P. Guhathakurta +3
We present kinematic and metallicity profiles for the M31 dwarf elliptical (dE) satellite galaxies NGC 147 and NGC 185. The profiles represent the most extensive spectroscopic radi…
HI Selected Galaxies in the Sloan Digital Sky Survey II: The Colors of Gas-Rich Galaxies
Andrew A. West, Diego A. Garcia-Appadoo, Julianne J. Dalcanton +3
We utilize color information for an HI-selected sample of 195 galaxies to explore the star formation histories and physical conditions that produce the observed colors. We show tha…
HI Selected Galaxies in the Sloan Digital Sky Survey I: Optical Data
Andrew A. West, Diego A. Garcia-Appadoo, Julianne J. Dalcanton +5
We present the optical data for 195 HI-selected galaxies that fall within both the Sloan Digital Sky Survey (SDSS) and the Parkes Equatorial Survey (ES). The photometric quantities…
X-ray Isophotes in a Rapidly Rotating Elliptical Galaxy: Evidence of Inflowing Gas
Fabrizio Brighenti, William G. Mathews, Philip J. Humphrey +1
We describe two-dimensional gasdynamical computations of the X-ray emitting gas in the rotating elliptical galaxy NGC 4649 that indicate an inflow of about one solar mass per year…
An optical/near-infrared survey of GCs in early-type galaxies
A. L. Chies-Santos, S. S. Larsen, E. M. Wehner +4
Optical/near-infrared observations for 14 globular cluster (GC) systems in early- type galaxies are presented. We investigate the recent claims (Yoon, Yi & Lee 2006) of colour bimo…
Could AGN Outbursts Transform Cool Core Clusters?
Fulai Guo, S. Peng Oh
The origin of the bimodality in cluster core entropy is still unknown. At the same time, recent work has shown that thermal conduction in clusters is likely a time-variable phenome…
Insight Into the Formation of the Milky Way Through Cold Halo Substructure. I. The ECHOS of Milky Way Formation
Kevin C. Schlaufman, Constance M. Rockosi, Timothy C. Beers +10
We identify ten -- seven for the first time -- elements of cold halo substructure (ECHOS) in the volume within 17.5 kpc of the Sun in the inner halo of the Milky Way. Our result is…
The Dominance of Metal-Rich Streams in Stellar Halos: A Comparison Between Substructure in M31 and Lambda-CDM Models
Karoline M. Gilbert, Andreea S. Font, Kathryn V. Johnston +1
Extensive photometric and spectroscopic surveys of the Andromeda galaxy (M31) have discovered tidal debris features throughout M31's stellar halo. We present stellar kinematics and…
Deep Optical Photometry of Six Fields in the Andromeda Galaxy
Thomas M. Brown, Ed Smith, Henry C. Ferguson +7
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…
Star Cluster Candidates in M81
J. B. Nantais, J. P. Huchra, B. McLeod +2
We present a catalog of extended objects in the vicinity of M81 based a set of 24 Hubble Space Telescope Advanced Camera for Surveys (ACS) Wide Field Camera (WFC) F814W (I-band) im…
A Survey of UV Bright Sources Behind the Halo of M31
Andrew Fittingoff, J. Xavier Prochaska, Jasonjot S. Kalirai +3
We have performed a wide-area ultraviolet (UV) imaging survey using the GALaxy Evolution eXplorer (GALEX) to search for bright, point-like UV sources behind M31's extended halo. Ou…
The role of black holes in galaxy formation and evolution
A. Cattaneo, S. M. Faber, J. Binney +14
Virtually all massive galaxies, including our own, host central black holes ranging in mass from millions to billions of solar masses. The growth of these black holes releases vast…
The Discovery of Vibrationally-Excited H_2 in the Molecular Cloud near GRB 080607
Y. Sheffer, J. X. Prochaska, B. T. Draine +2
GRB 080607 has provided the first strong observational signatures of molecular absorption bands toward any galaxy hosting a gamma-ray burst. Despite the identification of dozens of…
Galaxies probing galaxies: cool halo gas from a z = 0.47 post-starburst galaxy
Kate H. R. Rubin, J. Xavier Prochaska, David C. Koo +2
We study the cool gas around a galaxy at z = 0.4729 using Keck/LRIS spectroscopy of a bright (B = 21.7) background galaxy at z = 0.6942 at a transverse distance of 16.5/h_70 kpc. T…
New Observations of the Very Luminous Supernova 2006gy: Evidence for Echoes
A. A. Miller, N. Smith, W. Li +4
Supernova (SN) 2006gy was a hydrogen-rich core-collapse SN that remains one of the most luminous optical supernovae ever observed. The total energy budget (> 2 x 10^51 erg radiated…
Wavelength Accuracy of the Keck HIRES Spectrograph and Measuring Changes in the Fine Structure Constant
Kim Griest, Jonathan B. Whitmore, Arthur M. Wolfe +3
We report on an attempt to accurately wavelength calibrate four nights of data taken with the Keck HIRES spectrograph on QSO PHL957, for the purpose of determining whether the fine…
Dissecting the Red Sequence--II. Star Formation Histories of Early-Type Galaxies Throughout the Fundamental Plane
Genevieve J. Graves, S. M. Faber, Ricardo P. Schiavon
This analysis uses spectra of ~16,000 nearby SDSS quiescent galaxies to track variations in galaxy star formation histories along and perpendicular to the Fundamental Plane (FP). W…