5.4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR397 papers
- Los Alamos National LaboratoryUS396 papers
- Columbia UniversityUS325 papers
- The University of TokyoJP311 papers
- Brookhaven National LaboratoryUS309 papers
- Vanderbilt UniversityUS293 papers
- University of MichiganUS291 papers
- University of Tennessee at KnoxvilleUS266 papers
- University of Illinois Urbana-ChampaignUS263 papers
- Pennsylvania State UniversityUS262 papers
- University of WashingtonUS252 papers
- Eötvös Loránd UniversityHU250 papers
22 papers · 2 filters
Numerical Simulations of Galaxy Formation: Cooling, Heating, Star Formation
Anatoly Klypin, Stefan Gottlober, Gustavo Yepes
Formation of luminous matter in the Universe is a complicated process, which includes many processes and components. It is the vastly different scales involved in the process (from…
Particle-Mesh code for cosmological simulations
Anatoly Klypin, Jon Holtzman
Particle-Mesh (PM) codes are still very useful tools for testing predictions of cosmological models in cases when extra high resolution is not very important. We release for public…
CDM-Variant Cosmological Models - I: Simulations and Preliminary Comparisons
Michael A. K. Gross, Rachel S. Somerville, Joel R. Primack +2
We present two matched sets of five simulations each, covering five presently favored simple modifications to the standard cold dark matter (CDM) scenario. One simulation suite, wi…
Stellar Populations in Three Outer Fields of the LMC
Marla C. Geha, Jon A. Holtzman, Jeremy R. Mould +16
We present HST photometry for three fields in the outer disk of the LMC extending approximately four magnitudes below the faintest main sequence turnoff. We cannot detect any stron…
A New Limit on the Flux of Cosmic Antihelium
T. Saeki, K. Anraku, S. Orito +21
A very sensitive search for cosmic-ray antihelium was performed using data obtained from three scientific flights of BESS magnetic rigidity spectrometer. We have not observed any a…
The Spectral Character of Giant Planets and Brown Dwarfs
A. Burrows, M. Marley, W. B. Hubbard +6
Since October of 1995, employing Doppler spectroscopy astronomers have discovered as many as 20 giant planets and brown dwarfs, including companions to Boo, 51 Peg, …
Hubble Space Telescope Observations of the Draco Dwarf Spheroidal
Carl. J. Grillmair, Jeremy R. Mould, Jon A. Holtzman +15
We present an F606W-F814W color-magnitude diagram for the Draco dwarf spheroidal galaxy based on Hubble Space Telescope WFPC2 images. The luminosity function is well-sampled to 3 m…
An Unusual Radio Galaxy in Abell 428: A Large, Powerful FR I Source in a Disk-Dominated Host
Michael J. Ledlow, Frazer N. Owen, William C. Keel
We report the discovery of a powerful (~10^{24} Watts/Hz) FR I radio source in a highly flattened disk-dominated galaxy. Half of the radio flux from this source is concentrated wit…
Near Infrared Spectroscopy of G29.96-0.02: The First Spectral Classification of the Ionizing Star of an Ultracompact HII Region
Alan M. Watson, Margaret M. Hanson
We have obtained the first classification spectrum and present the first direct spectral classification of the ionizing star of an ultracompact HII region. The ultracompact HII reg…
Constraining cosmological models with cluster power spectra
J. Retzlaff, S. Borgani, S. Gottloeber +2
Using extensive N-body simulations we estimate redshift space power spectra of clusters of galaxies for different cosmological models (SCDM, TCDM, CHDM, Lambda-CDM, OCDM, BSI, tau-…
The Far Field Hubble Constant
Tod R. Lauer, John L. Tonry, Marc Postman +2
We used HST to obtain surface brightness fluctuation (SBF) observations of four nearby brightest cluster galaxies (BCG) to calibrate the BCG Hubble diagram of Lauer & Postman (1992…
The Cluster of Galaxies Surrounding Cygnus A
Frazer N. Owen, Michael J. Ledlow, Glenn E. Morrison +1
We report optical imaging and spectroscopy of 41 galaxies in a 22 arcmin square region surrounding Cygnus A. The results show that there is an extensive rich cluster associated wit…
Galaxies in N-body simulations: overcoming the overmerging problem
Anatoly Klypin, Stefan Gottloeber, Andrey Kravtsov +1
We present analysis of the evolution of dark matter halos in dense environments of groups and clusters in dissipationless cosmological simulations. The premature destruction of hal…
The Cores of Dark Matter Dominated Galaxies: theory vs. observations
Andrey V. Kravtsov, Anatoly A. Klypin, James S. Bullock +1
We use the rotation curves of a sample of dark matter dominated dwarf and low-surface brightness (LSB) late-type galaxies to study their radial mass distributions. We find that the…
The Massive Stellar Population in the Diffuse Ionized Gas of M33
Charles G. Hoopes, Rene A. M. Walterbos
We compare Far-UV, H-alpha, and optical broadband images of the nearby spiral galaxy M33, to investigate the massive stars associated with the diffuse ionized gas. The H-alpha/FUV…
The Warm Ionized Medium in Spiral Galaxies: A View from Above
Rene A. M. Walterbos
The Warm Ionized Medium (WIM), also referred to as Diffuse Ionized Gas, contains most of the mass of interstellar medium in ionized form, contributing as much as 30% of the total a…
Atmospheres of Giant Planets from Neptune to Gliese 229B
Mark S. Marley
Stratospheric heating, condensation, convective transport of non-equilibrium species, and deep radiative energy transport are important processes in the atmospheres of the solar jo…
A Non-Gray Theory of Extrasolar Giant Planets and Brown Dwarfs
A. Burrows, M. Marley, W. B. Hubbard +6
We present the results of a new series of non-gray calculations of the atmospheres, spectra, colors, and evolution of extrasolar giant planets (EGPs) and brown dwarfs for effective…
Direct Observations of the Ionizing Star in the UC HII Region G29.96-0.02: A Strong Constraint on the Stellar Birth Line for Massive Stars
Alan M. Watson, Alison L. Coil, Debra S. Shepherd +2
We have observed the ultracompact HII region G29.96-0.02 in the near infrared J, H, and K bands and in the Br-gamma line. By comparison with radio observations, we determine that t…
Liquid metallic hydrogen and the structure of brown dwarfs and giant planets
W. B. Hubbard, T. Guillot, J. I. Lunine +4
Electron-degenerate, pressure-ionized hydrogen (usually referred to as metallic hydrogen) is the principal constituent of brown dwarfs, the long-sought objects which lie in the mas…
Linearizing the Observed Power Spectrum
Clay Smith, Anatoly Klypin, Michael Gross +2
Reconstruction of the linear power spectrum from observational data provides a way to compare cosmological models to a large amount of data, as Peacock & Dodds (1994, 1996) have sh…
Optical Spectroscopy of Diffuse Ionized Gas in M31
B. Greenawalt, R. A. M. Walterbos, R. Braun
We have obtained sensitive long-slit spectra of Diffuse Ionized Gas (DIG) in the Andromeda Galaxy, M31, covering the wavelength range of 3550-6850 Angs. By co-adding extracted DIG…