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
36 papers · 1 filter
An IR Search for Extinguished Supernovae in Starburst Galaxies
Bruce Grossan, Earl Spillar, Robert Tripp +3
IR and Radio band observations of heavily extinguished regions in starburst galaxies suggest a very high SN rate associated with such regions. Optically measured supernova (SN) rat…
POTENT Reconstruction from Mark III Velocities
A. Dekel, A. Eldar, T. Kolatt +5
We present an improved POTENT method for reconstructing the velocity and mass density fields from radial peculiar velocities, test it with mock catalogs, and apply it to the Mark I…
Precession of collimated outflows from young stellar objects
C. Terquem, J. Eisloffel, J. Papaloizou +1
We consider several protostellar systems where either a precessing jet or at least two misaligned jets have been observed. We assume that the precession of jets is caused by tidal…
Properties of Two New M31 dSph Companions from Keck Imaging
Eva K. Grebel, Puragra Guhathakurta
We have obtained Keck Low Resolution Imaging Spectrograph images in V and I of the newly discovered Local Group dwarf galaxies Pegasus dSph and Cassiopeia dSph and their surroundin…
A Comparison of Metal Enrichment Histories in Rich Clusters and Individual Luminous Elliptical Galaxies
Fabrizio Brighenti, William G. Mathews
Hot, X-ray emitting gaseous halos around massive elliptical galaxies are a result of both stellar mass loss and inflow toward the overdensity from which giant ellipticals and their…
X-Ray Evidence for Multiphase Hot Gas with Solar Abundances in the Brightest Elliptical Galaxies
David A. Buote
We examine whether isothermal models of the hot gas can successfully describe the ASCA and ROSAT spectra of NGC 1399, NGC 4472, NGC 4636, and NGC 5044. Broad-band spectral fitting…
The response of accretion disks to bending waves: angular momentum transport and resonances
Caroline E. J. M. L. J. Terquem
We investigate the linear tidal perturbation of a viscous Keplerian disk by a companion star orbiting in a plane inclined to the disk. We consider m=1 perturbations with odd symmet…
The Mass and Extent of the Galactic Halo
Dennis Zaritsky
We review the various techniques used to constrain the Galactic halo mass profile for radii > 20 kpc with particular emphasis on identifying a self-consistent halo model and resolv…
The cluster pair SL 538/ NGC 2006 (SL 537)
Andrea Dieball, Eva K. Grebel
We studied in detail the binary cluster candidates SL 538 and NGC 2006 in the Large Magellanic Cloud (LMC). This cluster pair is located in the northwestern part of the large OB as…
Ages for Globular Clusters in the Outer Galactic Halo: The Second Parameter Clusters Palomar~3, Palomar~4 and Eridanus
Peter B. Stetson, Michael Bolte, William E. Harris +9
We have used the WFPC2 camera on the Hubble Space Telescope to obtain photometry of the outer-halo globular clusters Palomar 3, Palomar 4, and Eridanus. These three are classic exa…
Iron Opacity and the Pulsar of Supernova 1987A
C. L. Fryer, S. A. Colgate, P. A. Pinto
Neutron stars formed in Type II supernovae are likely to be initially obscured by late-time fallback. Although much of the late-time fallback is quickly accreted via neutrino cooli…
Evolution of Hot Gas and Dark Halos in Group-Dominant Elliptical Galaxies: Influence of Cosmic Inflow
Fabrizio Brighenti, William G. Mathews
We study the complete dynamical evolution of hot interstellar gas in massive elliptical galaxies born into a simple flat universe beginning with an overdense perturbation. Within t…
Planet Consumption and Stellar Metallicity Enhancements
Eric Sandquist, Ronald E. Taam, D. N. C. Lin +1
The evolution of a giant planet within the stellar envelope of a main-sequence star is investigated as a possible mechanism for enhancing the stellar metallicities of the parent st…
The Population of Weak Mg II Absorbers I. A Survey of 26 QSO HIRES/Keck Spectra
Christopher W. Churchill, Jane R. Rigby, Jane C. Charlton +1
We present a search for "weak" MgII absorbers [those with W_r(2796) < 0.3 A in the HIRES/Keck spectra of 26 QSOs. We found 30, of which 23 are newly discovered. The spectra are 80%…
Merging White Dwarf/Black Hole Binaries and Gamma-Ray Bursts
C. L. Fryer, S. E. Woosley, M. Herant +1
The merger of compact binaries, especially black holes and neutron stars, is frequently invoked to explain gamma-ray bursts (GRB's). In this paper, we present three dimensional hyd…
The Internal Kinematics of the Leo I Dwarf Spheroidal Galaxy: Dark Matter at the Fringe of the Milky Way
Mario Mateo, Edward W. Olszewski, Steven S. Vogt +1
We present radial velocities of 33 red giants in the Leo I dSph galaxy obtained from spectra taken with the HIRES echelle spectrograph on the Keck I telescope. These data have a me…
Luminosity Evolution of Early-type Galaxies to z=0.83: Constraints on Formation Epoch and Omega
Pieter G. van Dokkum, Marijn Franx, Daniel D. Kelson +1
We present deep spectroscopy with the Keck telescope of eight galaxies in the luminous X-ray cluster MS1054-03 at z=0.83. The data are combined with imaging observations from the H…
The Spin of M87 as measured from the Rotation of its Globular Clusters
Markus Kissler-Patig, Karl Gebhardt
We revisit the kinematical data for 204 globular clusters in the halo of M87. Beyond 3 r_eff along the major axis of the galaxy light, these globular clusters exhibit substantial r…
Hyper-Accreting Black Holes and Gamma-Ray Bursts
Robert Popham, S. E. Woosley, Chris Fryer
A variety of current models for gamma-ray bursts (GRBs) suggest a common engine - a black hole of several solar masses accreting matter from a disk at a rate 0.01 to 10 solar masse…
Cosmological and Environmental Influences on Hot Gas Observed in Elliptical Galaxies
William G. Mathews, Fabrizio Brighenti
The variation of temperature and density in the hot, X-ray emitting gas around massive, group dominant elliptical galaxies can be understood as a combination of gas ejected from ev…
Gamma-Ray Bursts and Type Ic Supernovae: SN 1998bw
S. E. Woosley, Ronald G. Eastman, Brian P. Schmidt
Recently a Type Ic supernova, SN 1998bw, was discovered coincident with a gamma-ray burst, GRB 980425. The supernova had unusual radio, optical, and spectroscopic properties. We ex…
M32+/-1
Tod R. Lauer, S. M. Faber, Edward A. Ajhar +2
WFPC-2 images are used to study the central structure of M31, M32, and M33. The dimmer peak, P2, of the M31 double nucleus is centered on the bulge to 0.1", implying that it is the…
Near Infrared Observations of a Redshift 4.92 Galaxy: Evidence for Significant Dust Absorption
B. T. Soifer, G. Neugebauer, M. Franx +2
Near-infrared imaging and spectroscopy have been obtained of the gravitationally lensed galaxy at z=4.92 discovered in HST images by Franx et al. (1997). Images at 1.2, 1.6 and 2.2…
Keck Spectroscopy of Candidate Proto-globular Clusters in NGC 1275
Jean P. Brodie, Linda L. Schroder, John P. Huchra +3
Keck spectroscopy of 5 proto-globular cluster candidates in NGC 1275 has been combined with HST WFPC2 photometry to explore the nature and origin of these objects and discriminate…