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
26 papers · 1 filter
The Stellar Content and Distance of UGC 4483
A. E. Dolphin, L. Makarova, I. D. Karachentsev +7
We present HST/WFPC2 observations of UGC 4483, an irregular galaxy in the M81/NGC 2403 complex. Stellar photometry was carried out with HSTphot, and is complete to V ~ 26.0 and I ~…
Towards a Precise Measurement of Matter Clustering: Lyman-alpha Forest Data at Redshifts 2-4
Rupert A. C. Croft, David H. Weinberg, Mike Bolte +5
We measure the filling factor, correlation function, and power spectrum of transmitted flux in a large sample of Lya forest spectra, comprised of 30 Keck HIRES spectra and 23 Keck…
The DEEP Groth Strip Survey X: Number Density and Luminosity Function of Field E/S0 Galaxies at z < 1
Myungshin Im, L. Simard, S. M. Faber +7
We present the luminosity function and color-redshift relation of a magnitude-limited sample of 145 mostly red field E/S0 galaxies at z < 1 from the DEEP Groth Strip Survey (GSS).…
The Galaxy Populations of X-Ray Detected, Poor Groups
Kim-Vy H. Tran, Luc Simard, Ann I. Zabludoff +1
(Abridged) We determine the quantitative morphology and star formation properties of galaxies in six nearby X-ray detected, poor groups using multi-object spectroscopy and wide-fie…
The low surface brightness members of nearby groups
C. Mendes de Oliveira, E. R. Carrasco, L. Infante +1
We are undertaking a large, wide-field survey of nearby groups and poor clusters. The main goals are identifying and characterizing the properties of low-surface-brightness dwarf g…
Performance characteristics of the new Keck Observatory echelle spectrograph and imager
A. I. Sheinis, J. Miller, M. Bolte +1
The Echelle Spectrograph and Imager (ESI) is a multipurpose instrument which has been delivered by the Instrument Development Laboratory of Lick Observatory for use at the Cassegra…
Stellar Populations in the Phoenix Dwarf (dIrr/dSph) Galaxy as Observed by HST/WFPC2
Jon A. Holtzman, Graeme H. Smith, Carl Grillmair
We present HST/WFPC2 photometry of the central regions of the Phoenix dwarf. Accurate photometry allows us to: 1) confirm the existence of the horizontal branch previously detected…
HST observations of star clusters in NGC 1023: Evidence for three cluster populations?
Soeren S. Larsen, Jean P. Brodie
Using HST images we have carried out a study of cluster populations in the nearby S0 galaxy NGC 1023. In two WFPC2 pointings we have identified 221 cluster candidates. The small di…
A new look at globular cluster colors in NGC 3311 and the case for exclusively metal-rich globular cluster systems
Jean P. Brodie, Soeren S. Larsen, Markus Kissler-Patig
NGC 3311, the central cD galaxy in the Hydra cluster, was previously thought to host the most metal-rich globular cluster system known. Ground-based Washington photometry had indic…
Young massive star clusters in M51
Soeren S. Larsen
A search for young massive star clusters (YMCs) in the nearby face-on spiral galaxy M51 (NGC 5194) has been carried out using UBV CCD images from the prime focus camera on the Lick…
Influence of Cooled Interstellar Gas on the Fundamental Plane for Elliptical Galaxies
William G. Mathews, Fabrizio Brighenti
We explore the possibly important influence of cooled interstellar gas on the fundamental plane of elliptical galaxies. Interstellar cooling is described by a parameterized sink te…
Dynamical Mass Estimates for the Halo of M31 from Keck Spectroscopy
N. W. Evans, M. I. Wilkinson, P. Guhathakurta +2
The last few months have seen the measurements of the radial velocities of all of the dwarf spheroidal companions to the Andromeda galaxy (M31) using the spectrographs (HIRES and L…
Optical Spectroscopy of Supernova 1993J During Its First 2500 Days
T. Matheson, A. V. Filippenko, A. J. Barth +15
We present 42 low-resolution spectra of Supernova (SN) 1993J, our complete collection from the Lick and Keck Observatories, from day 3 after explosion to day 2454, as well as one K…
Abundances and Kinematics of Field Halo and Disk Stars I: Observational Data and Abundance Analysis
Jon P. Fulbright
We describe observations and abundance analysis of a high-resolution, high-S/N survey of 168 stars, most of which are metal-poor dwarfs. We follow a self-consistent LTE analysis te…
The LBDS Hercules sample of millijansky radio sources at 1.4 GHz: I. Multi-colour photometry
I. Waddington, R. A. Windhorst, J. S. Dunlop +2
The results are presented of an extensive programme of optical and infrared imaging of radio sources in a complete subsample of the Leiden-Berkeley Deep Survey. The LBDS Hercules s…
Turbulent Molecular Cloud Cores: Rotational Properties
Andreas Burkert, Peter Bodenheimer
The rotational properties of centrally condensed, turbulent molecular cloud cores with velocity fields that are characterized by Gaussian random fields are investigated. It is show…
Resolving the Controversy Over the Core Radius of 47 Tucanae (NGC 104)
Justin H. Howell, Puragra Guhathakurta, Ronald L. Gilliland
This paper investigates the discrepancy between recent measurements of the density profile of the globular cluster 47 Tuc that have used HST data sets. Guhathakurta et al. (1992) u…
Why Are Rotating Elliptical Galaxies Less Elliptical at X-ray Frequencies?
Fabrizio Brighenti, William G. Mathews
If mass and angular momentum were conserved in cooling flows associated with luminous, slowly rotating elliptical galaxies, the inflowing hot gas would spin up, resulting in disks…
The Morphologies of the Small Magellanic Cloud
Dennis Zaritsky, Jason Harris, Eva K. Grebel +1
We compare the distribution of stars of different spectral types, and hence mean age, within the central SMC and find that the asymmetric structures are almost exclusively composed…
Kinematics of Metal-Poor Stars in the Galaxy. II. Proper Motions for a Large Non-Kinematically Selected Sample
T. C. Beers, M. Chiba, Y. Yoshii +4
We present a revised catalog of 2106 Galactic stars, selected without kinematic bias, and with available radial velocities, distance estimates, and metal abundances in the range 0.…
HST Photometry and Keck Spectroscopy of the Rich Cluster MS1054-03: Morphologies, Butcher-Oemler Effect and the Color-Magnitude Relation at z=0.83
Pieter G. van Dokkum, Marijn Franx, Daniel Fabricant +2
We present a study of 81 I selected, spectroscopically-confirmed members of the X-ray cluster MS1054-03 at z=0.83. Redshifts and spectral types were determined from Keck spectrosco…
Where Do Cooling Flows Cool?
Fabrizio Brighenti, William G. Mathews
Although only about 5 percent of the total baryonic mass in luminous elliptical galaxies is in the form of cooled interstellar gas, it is concentrated within the optical effective…
Jet directions in Seyfert galaxies: B and I imaging data
H. R. Schmitt, A. L. Kinney
We present the results of broad-band B and I imaging observations for a sample of 88 Seyfert galaxies (29 Seyfert 1's and 59 Seyfert 2's), selected from a mostly isotropic property…
Oxygen Absorption in Cooling Flows
David A. Buote
The inhomogeneous cooling flow scenario predicts the existence of large quantities of gas in massive elliptical galaxies, groups, and clusters that have cooled and dropped out of t…