Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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- Lawrence Berkeley National LaboratoryUS2.1k papers
- SLAC National Accelerator LaboratoryUS2k papers
- University of California, IrvineUS2k papers
- Yale UniversityUS1.9k papers
- University of Wisconsin–MadisonUS1.9k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR1.9k papers
- McGill UniversityCA1.9k papers
- University of ChicagoUS1.9k papers
79 papers · 2 filters
Optical Spectroscopy of Galactic Cirrus Clouds: Extended Red Emission in the Diffuse Interstellar Medium
Arpad Szomoru, Puragra Guhathakurta
We present initial results from the first optical spectroscopic survey of high latitude Galactic cirrus clouds. The observed shape of the cirrus spectrum does not agree with that o…
Globular Cluster Halos around the brightest Fornax Ellipticals
Markus Kissler-Patig
We compare the properties of the globular clusters around NGC 1399, NGC 1404 and NGC 1380, the three brightest early-type galaxies in the center of the Fornax galaxy cluster. The g…
The HST Key Project on the Extragalactic Distance Scale XIII. The Metallicity Dependence of the Cepheid Distance Scale
R. Kennicutt, P. Stetson, A. Saha +22
Uncertainty in the metal abundance dependence of the Cepheid variable period- luminosity (PL) relation remains one of the outstanding sources of systematic error in the extragalact…
``E+A'' Galaxies: Environment and Evolution
Ann I. Zabludoff
One important approach to the study of galaxy evolution is to identify those galaxies whose spectral and/or morphological characteristics suggest that they are in transition. For e…
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…
Implications of Spikes in the Redshift Distribution of Galaxies
Risa H. Wechsler, Michael A. K. Gross, Joel R. Primack +2
We address the high peaks found by Steidel et al (1997) in the redshift distribution of ``Lyman-break'' objects (LBOs) at redshift z~3. The highest spike represents a relative over…
Relative Sizes of X-ray and Optical Images of Elliptical Galaxies; Correlation with X-ray Luminosity
William G. Mathews, Fabrizio Brighenti
Optical parameters of elliptical galaxies are tightly correlated, but their x-ray parameters vary widely. The x-ray luminosity L_x ranges over more than an order of magnitude for e…
Oscillations in solar-type stars tidally induced by orbiting planets
C. Terquem, J. C. B. Papaloizou, R. P. Nelson +1
We examine the effect of dynamical tides raised by a companion on a solar-type star. In these binaries, gravity or g mode oscillations are excited by the companion in the radiative…
Abundance Profiles in Low-Mass Galaxies
Henry A. Kobulnicky
The nitrogen and oxygen abundances in the warm ionized gas of low-mass, metal-poor galaxies appear surprisingly homogeneous considering the prevalence of large HII regions, which c…
Hot Gas and Halos in Elliptical Galaxies
William G. Mathews, Fabrizio Brighenti
We review recent progress in understanding the evolution of hot interstellar gas in the halos of elliptical galaxies. Non-homologous variations in the physical size of the hot gas…
A comparative modeling of supernova 1993J
S. I. Blinnikov, R. Eastman, O. S. Bartunov +2
The light curve of Supernova (SN) 1993J is calculated using two approaches to radiation transport as exemplified by the two computer codes, STELLA and EDDINGTON. Particular attenti…
How to Plant a Merger Tree
Rachel S. Somerville, Tsafrir S. Kolatt
We investigate several approaches for constructing Monte Carlo realizations of the merging history of virialized dark matter halos (``merger trees'') using the extended Press-Schec…
The Thermal Evolution of Ultramagnetized Neutron Stars
Jeremy S. Heyl, Lars Hernquist
Using recently calculated analytic and numerical models for the thermal structure of ultramagnetized neutron stars, we estimate the effects that ultrastrong magnetic fields $B \ge…
Smooth Particle Hydrodynamics: Models, Applications, and Enabling Technologies
Piet Hut, Lars Hernquist, George Lake +3
We present the results from a two-day study in which we discussed various implementations of Smooth Particle Hydrodynamics (SPH), one of the leading methods used across a variety o…
Recent X-ray Observations and the Evolution of Hot Gas in Elliptical Galaxies: Evidence for Circumgalactic Gas
Fabrizio Brighenti, William G. Mathews
X-ray emitting gaseous halos, such as that in elliptical galaxies like NGC 4472, cannot have been produced solely from gas expelled from galactic stars. In traditional models for t…
Keck Spectroscopy of Globular Clusters around NGC 1399
Markus Kissler-Patig, Jean P. Brodie, Linda L. Schroder +3
We report moderate resolution, high signal-to-noise spectroscopy of globular clusters around NGC 1399, the central cD galaxy in the Fornax cluster. We address issues as diverse as…
Radial Velocities of Globular Clusters in the Giant Elliptical Galaxy NGC 1399
Dante Minniti, Markus Kissler-Patig, Paul Goudfrooij +1
We report on the radial velocity measurements of 18 globular clusters and one dE galaxy in the field of the giant elliptical galaxy NGC 1399, the dominant galaxy of the Fornax clus…
On the global warping of a thin self-gravitating near Keplerian gaseous disk with application to the disk in NGC 4258
John C. B. Papaloizou, Caroline Terquem, Doug N. C. Lin
On the global warping of a thin self-gravitating near Keplerian gaseous disk with application to the disk in NGC 4258
Hubble Flow Broadening of the Lyman-alpha Forest and its Implications
David H. Weinberg, Lars Hernquist, Neal Katz +2
Lyman-alpha forest lines in QSO spectra have typical widths of 20-50 km/s. Low column density absorbers in cosmological simulations are large, diffuse structures, and the Hubble fl…
Testing CNO Enrichment Scenarios in Metal-poor Galaxies with HST Spectroscopy
Henry A. Kobulnicky, Evan D. Skillman
Using Hubble Space Telescope ultraviolet and ground-based optical spectroscopy, we measure the C/O and N/O ratios of three metal-poor galaxies with similar metallicity but differin…
Optical Light Curves of the Type Ia Supernovae 1990N and 1991T
P. Lira, Nicholas B. Suntzeff, M. M. Phillips +27
We present UBVRI light curves for the bright Type Ia supernovae SN 1990N in NGC 4639 and SN 1991T in NGC 4527 based on photometry gathered in the course of the Calan/Tololo superno…
The Luminosity Function for L>L* Galaxies at z > 3
Matthew A. Bershady, Steven R. Majewski, David C. Koo +2
Through use of multiband (U, B, R, I) photometry we have isolated high redshift (3.0<z<3.5) galaxy candidates in a survey of 1.27 deg^2 to R = 21.25 and a survey of 0.02 deg^2 to R…
Powering Anomalous X-ray Pulsars by Neutron Star Cooling
Jeremy S. Heyl, Lars Hernquist
Using recently calculated analytic models for the thermal structure of ultramagnetized neutron stars, we estimate the thermal fluxes from young ( yr) ultramagnetized ($…
IRAS versus POTENT Density Fields on Large Scales: Biasing and Omega
Y. Sigad, A. Eldar, A. Dekel +2
The galaxy density field as extracted from the IRAS 1.2 Jy redshift survey is compared to the mass density field as reconstructed by the POTENT method from the Mark III catalog of…