22k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Massachusetts Institute of TechnologyUS255 papers
- California Institute of TechnologyUS233 papers
- Triangle Universities Nuclear LaboratoryUS232 papers
- Center for Astrophysics Harvard & SmithsonianUS218 papers
- Duke UniversityUS195 papers
- University of California, BerkeleyUS186 papers
- Lawrence Berkeley National LaboratoryUS185 papers
- Centre National de la Recherche ScientifiqueFR182 papers
- University of WashingtonUS182 papers
- Princeton UniversityUS178 papers
- The University of Texas at AustinUS168 papers
- Vanderbilt UniversityUS159 papers
17 papers · 2 filters
The Peculiar Motions of Early-Type Galaxies in Two Distant Regions VI: The Maximum Likelihood Gaussian Algorithm
R. P. Saglia, Matthew Colless, David Burstein +3
The EFAR project is designed to measure the properties and peculiar motions of early-type galaxies in two distant regions. Here we describe the maximum likelihood algorithm we deve…
Starbursts versus Truncated Star Formation in Nearby Clusters of Galaxies
James A. Rose, Alejandro E. Gaba, Nelson Caldwell +1
We present long-slit spectroscopy, B and R bandpass imaging, and 21 cm observations of a sample of early-type galaxies in nearby clusters which are known to be either in a star-for…
The Giant Flare of 1998 August 27 from SGR 1900+14: I. An Interpretive Study of BeppoSAX and Ulysses Observations
M. Feroci, K. Hurley, R. Duncan +1
The giant flare of 1998 August 27 from SGR 1900+14 was extraordinary in many ways: it was the most intense flux of gamma rays ever detected from a source outside our solar system;…
CMB with Quintessence: Analytic Approach and CMBFAST
James L. Crooks, James O. Dunn, Paul H. Frampton +2
A particular kind of quintessence is considered, with equation of motion , corresponding to a cosmological term with time-dependence …
Astrophysics of the Soft Gamma Repeaters and Anomalous X-Ray Pulsars
Christopher Thompson
I summarize the recent advances in our understanding of the Soft Gamma Repeaters: in particular their spin behavior, persistent emission and hyper-Eddington outbursts. The giant fl…
The peculiar motions of early-type galaxies in two distant regions - VII. Peculiar velocities and bulk motions
Matthew Colless, R. P. Saglia, D. Burstein +3
We present peculiar velocities for 84 clusters of galaxies in two large volumes at distances between 6000 and 15000 km/s in the directions of Hercules-Corona Borealis and Perseus-P…
Quintessence Model and Cosmic Microwave Background
Paul H. Frampton
A particular kind of quintessence is considered, with equation of motion , corresponding to a cosmological term with time-dependence …
The distribution of shock waves in driven supersonic turbulence
Michael D. Smith, Mordecai-Mark Mac Low, Fabian Heitsch
Supersonic turbulence generates distributions of shock waves. Here, we analyse the shock waves in three-dimensional numerical simulations of uniformly driven supersonic turbulence,…
The Galactic Thick Disk Stellar Abundances
Jason X. Prochaska, Sergei O. Naumov, Bruce W. Carney +2
We present first results from a program to measure the chemical abundances of a large (N>30) sample of thick disk stars with the principal goal of investigating the formation histo…
An Unusual Burst from Soft Gamma Repeater SGR 1900+14: Comparisons with Giant Flares and Implications for the Magnetar Model
Alaa I. Ibrahim, Tod E. Strohmayer, Peter M. Woods +6
The Soft Gamma Repeater SGR 1900+14 entered a remarkable phase of activity during the summer of 1998. This activity peaked on August 27, 1998 when a giant periodic gamma-ray flare…
Galaxy Mergers: A Search for Chemical Signatures
Inese I. Ivans, Bruce Carney, Luisa de Almeida +1
We have gathered high resolution echelle spectra for more than two dozen high-velocity metal-poor field stars, including BD+80 245, a star previously known to have extremely low [a…
Spectral Variations in Early-Type Galaxies as a Function of Mass
K. D. Concannon, J. A. Rose, N. Caldwell
We report on the strengths of three spectral indicators - Mg_2, Hbeta, and Hn/Fe - in the integrated light of a sample of 100 field and cluster E/S0 galaxies. The measured indices…
Timing Noise in SGR 1806-20
Peter M. Woods, Chryssa Kouveliotou, Mark H. Finger +9
We have phase connected a sequence of RXTE PCA observations of SGR 1806-20 covering 178 days. We find a simple secular spin-down model does not adequately fit the data. The period…
Mode identification of Pulsating White Dwarfs using the HST
S. O. Kepler, E. L. Robinson, D. Koester +3
We have obtained time-resolved ultraviolet spectroscopy for the pulsating DAV stars G226-29 and G185-32, and for the pulsating DBV star PG1351+489 with the Hubble Space Telescope F…
Evidence for a Young Stellar Population in NGC 5018
A. J. Leonardi, G. Worthey
Two absorption line indices, Ca II and Hdelta/FeI4045, measured from high resolution spectra are used with evolutionary synthesis models to verify the presence of a young stellar p…
Statistical properties of SGR 1806-20 bursts
Ersin Gogus, Peter M. Woods, Chryssa Kouveliotou +4
We present statistics of SGR 1806-20 bursts, combining 290 events detected with RXTE/PCA, 111 events detected with BATSE and 134 events detected with ICE. We find that the fluence…
The Spectroscopic Orbit of the Planetary Companion Transiting HD209458
T. Mazeh, D. Naef, G. Torres +17
We report a spectroscopic orbit with period P = 3.52433 +/- 0.00027 days for the planetary companion that transits the solar-type star HD209458. For the metallicity, mass, and radi…