output
19912026
Showing 2010 · astro-ph.COShow all

106 papers · 2 filters

astro-ph.CO2010★ 148 cited

The Brightest Of Reionizing Galaxies Survey: Design and Preliminary Results

M. Trenti, L. D. Bradley, M. Stiavelli +7

We present the first results on the search for very bright (M_AB -21) galaxies at redshift z~8 from the Brightest of Reionizing Galaxies (BoRG) survey. BoRG is a Hubble Space Teles…

astro-ph.CO2010★ 54 cited

Probing the faint end of the quasar luminosity function at z ~ 4 in the COSMOS field

H. Ikeda, T. Nagao, K. Matsuoka +16

We searched for quasars that are ~ 3 mag fainter than the SDSS quasars in the redshift range 3.7 < z < 4.7 in the COSMOS field to constrain the faint end of the quasar luminosity f…

astro-ph.CO2010★ 202 cited

A mature cluster with X-ray emission at z=2.07

R. Gobat, E. Daddi, M. Onodera +10

We report evidence of a fully established galaxy cluster at z=2.07, consisting of a ~20sigma overdensity of red, compact spheroidal galaxies spatially coinciding with extended X-ra…

astro-ph.CO2010★ 87 cited

A tale of two GRB-SNe at a common redshift of z = 0.54

Z. Cano, D. Bersier, C. Guidorzi +71

We present ground-based and HST optical observations of the optical transients (OTs) of long-duration Gamma Ray Bursts (GRBs) 060729 and 090618, both at a redshift of z = 0.54. For…

astro-ph.CO2010★ 18 cited

Optical and near-infrared velocity dispersions of early-type galaxies

Joachim Vanderbeke, Maarten Baes, Aaron J. Romanowsky +1

We have carried out a systematic, homogeneous comparison of optical and near-infrared dispersions. Our magnitude-limited sample of early-type galaxies in the Fornax cluster compris…

astro-ph.CO2010★ 52 cited

A High Signal-to-Noise Ratio Composite Spectrum of Gamma-ray Burst Afterglows

L. Christensen, J. P. U. Fynbo, J. X. Prochaska +3

We present a composite spectrum of 60 long duration gamma-ray burst (GRB) afterglows with redshifts in the range 0.35<z<6.7 observed with low resolution optical spectra. The compos…

astro-ph.CO2010★ 225 cited

Nonparametric Dark Energy Reconstruction from Supernova Data

Tracy Holsclaw, Ujjaini Alam, Bruno Sanso +4

Understanding the origin of the accelerated expansion of the Universe poses one of the greatest challenges in physics today. Lacking a compelling fundamental theory to test, observ…

astro-ph.CO2010★ 105 cited

The SIMPLE survey: observations, reduction, and catalog

M. Damen, I. Labbe, P. G. van Dokkum +11

We present the Spitzer IRAC/MUSYC Public Legacy Survey in the Extended CDF-South (SIMPLE), which consists of deep IRAC observations covering the ~1,600 arcmin^2 area surrounding GO…

astro-ph.CO2010★ 9 cited

Star Clusters in M31: Old Clusters with Bar Kinematics

H. Morrison, N. Caldwell, R. Schiavon +3

We analyze our accurate kinematical data for the old clusters in the inner regions of M31. These velocities are based on high S/N Hectospec data (Caldwell et al 2010). The data are…

astro-ph.CO2010★ 19 cited

The Origin of [OII] Emission in Recently Quenched AGN Hosts

Dale D. Kocevski, Brian C. Lemaux, Lori M. Lubin +3

We have employed emission-line diagnostics derived from DEIMOS and NIRSPEC spectroscopy to determine the origin of the [OII] emission line observed in six AGN hosts at z~0.9. These…

astro-ph.CO2010★ 117 cited

Statistics of Satellite Galaxies Around Milky Way-Like Hosts

Michael T. Busha, Risa H. Wechsler, Peter S. Behroozi +3

We calculate the probability that a Milky-Way-like halo in the standard cosmological model has the observed number of Magellanic Clouds (MCs). The statistics of the number of MCs i…

astro-ph.CO2010★ 105 cited

Galaxy counterparts of metal-rich damped Lyman-alpha absorbers - II. A solar-metallicity and dusty DLA at z_abs=2.58

J. P. U. Fynbo, C. Ledoux, P. Noterdaeme +14

[Abridged]. Here, we report on the discovery of the galaxy counterpart of the z_abs=2.58 DLA on the line-of-sight to the z=3.07 quasar SDSS J091826.16+163609.0. The galaxy counterp…

astro-ph.CO2010★ 332 cited

The PRIsm MUlti-Object Survey (PRIMUS) I: Survey Overview and Characteristics

Alison L. Coil, Michael R. Blanton, Scott M. Burles +9

We present the PRIsm MUlti-object Survey (PRIMUS), a spectroscopic faint galaxy redshift survey to z~1. PRIMUS uses a low-dispersion prism and slitmasks to observe ~2,500 objects a…

astro-ph.CO2010★ 308 cited

A Comparison of Methods for Determining the Molecular Content of Model Galaxies

Mark R. Krumholz, Nickolay Y. Gnedin

Recent observations indicate that star formation occurs only in the molecular phase of a galaxy's interstellar medium. A realistic treatment of star formation in simulations and an…

astro-ph.CO2010★ 23 cited

The Last Eight-Billion Years of Intergalactic SiIV Evolution

Kathy L Cooksey, J. Xavier Prochaska, Christopher Thom +1

We identified 24 SiIV absorption systems with z <~ 1 from a blind survey of 49 low-redshift quasars with archival Hubble Space Telescope ultraviolet spectra. We relied solely on th…

astro-ph.CO2010★ 21 cited

Metallicities and dust content of proximate damped Lyman alpha systems in the Sloan Digital Sky Survey

Sara L. Ellison, J. Xavier Prochaska, J. Trevor Mendel

Composite spectra of 85 proximate absorbers (log N(HI)>20 and velocity difference between the absorption and emission redshift, dv<10,000 km/s) in the SDSS are used to investigate…

astro-ph.CO2010★ 11 cited

Self-consistent evolution of gas and cosmic rays in Cygnus A and similar FR II classic double radio sources

William G. Mathews, Fulai Guo

In Cygnus A and other classical FR II double radio sources, powerful opposing jets from the cores of halo-centered galaxies drive out into the surrounding cluster gas, forming hots…

astro-ph.CO2010★ 52 cited

An optical/NIR survey of globular clusters in early-type galaxies II. Ages of GC systems and the relation to galaxy morphology

A. L. Chies-Santos, S. S. Larsen, H. Kuntschner +5

Context: Some photometric studies of extragalactic globular cluster (GC) systems using the optical and near-infrared colour combination have suggested the presence of a large fract…

astro-ph.CO2010★ 79 cited

The Early Evolution of Primordial Pair-Instability Supernovae

C. C. Joggerst, Daniel Whalen

The observational signatures of the first cosmic explosions and their chemical imprint on second-generation stars both crucially depend on how heavy elements mix within the star at…

astro-ph.CO2010★ 24 cited

Unusually Luminous Giant Molecular Clouds in the Outer Disk of M33

F. Bigiel, A. Bolatto, A. Leroy +5

We use high spatial resolution (~7pc) CARMA observations to derive detailed properties for 8 giant molecular clouds (GMCs) at a galactocentric radius corresponding to approximately…

astro-ph.CO2010★ 29 cited

Automated Morphological Classification of SDSS Red Sequence Galaxies

Judy Y. Cheng, S. M. Faber, Luc Simard +4

(abridged) In the last decade, the advent of enormous galaxy surveys has motivated the development of automated morphological classification schemes to deal with large data volumes…

astro-ph.CO2010★ 94 cited

The PN.S Elliptical Galaxy Survey: a standard LCDM halo around NGC 4374?

N. R. Napolitano, A. J. Romanowsky, M. Capaccioli +10

As part of our current programme to test LCDM predictions for dark matter (DM) haloes using extended kinematical observations of early-type galaxies, we present a dynamical analysi…

astro-ph.CO2010★ 73 cited

Spitzer IRS 16 micron Observations of the GOODS Fields

Harry I. Teplitz, Ranga Chary, David Elbaz +13

We present Spitzer 16 micron imaging of the Great Observatories Origins Deep Survey (GOODS) fields. We survey 150 square arcminutes in each of the two GOODS fields (North and South…

astro-ph.CO2010★ 49 cited

M/L and Color Evolution for A Deep Sample of M* Cluster Galaxies at z~1: The Formation Epoch and the Tilt of the Fundamental Plane

Brad P. Holden, Arjen van der Wel, Daniel D. Kelson +2

We have measured velocity dispersions for a sample of 36 galaxies with J < 21.2 or Mr < -20.6 mag in MS1054-03, a massive cluster of galaxies at z = 0.83. Our data are of uniformly…