output
19912026
Showing 2013 · astro-ph.COShow all

130 papers · 2 filters

astro-ph.CO2013★ 52 cited

Finding the First Cosmic Explosions. III. Pulsational Pair-Instability Supernovae

Daniel J. Whalen, Joseph Smidt, Wesley Even +4

Population III supernovae have been the focus of growing attention because of their potential to directly probe the properties of the first stars, particularly the most energetic e…

astro-ph.CO2013★ 107 cited

The spin temperature of high-redshift damped Lyman- systems

N. Kanekar, J. X. Prochaska, A. Smette +10

We report results from a programme aimed at investigating the temperature of neutral gas in high-redshift damped Lyman- absorbers (DLAs). This involved (1) HI 21cm absorption st…

astro-ph.CO2013★ 112 cited

A Comparison between Semi-Analytic Model Predictions for the CANDELS Survey

Yu Lu, Risa H. Wechsler, Rachel S. Somerville +13

We compare the predictions of three independently developed semi-analytic galaxy formation models that are being used to aid in the interpretation of results from the CANDELS surve…

astro-ph.CO2013★ 69 cited

AGN X-ray variability in the XMM-COSMOS survey

G. Lanzuisi, G. Ponti, M. Salvato +18

We took advantage of the observations carried out by XMM in the COSMOS field during 3.5 years, to study the long term variability of a large sample of AGN (638 sources), in a wide…

astro-ph.CO2013★ 63 cited

Constraints on the merging channel of massive galaxies since z~1

I. Ferreras, I. Trujillo, E. Mármol-Queraltó +8

(Abridged) We probe the merging channel of massive galaxies over the z=0.3-1.3 redshift window by studying close pairs in a sample of 238 galaxies with stellar mass >1E11Msun, from…

astro-ph.CO2013★ 77 cited

The colour distribution of galaxies at redshift five

A. B. Rogers, R. J. McLure, J. S. Dunlop +11

We present the results of a study investigating the rest-frame ultra-violet (UV) spectral slopes of redshift z~5 Lyman-break galaxies (LBGs). By combining deep Hubble Space Telesco…

astro-ph.CO2013★ 3 cited

The Dark Matter Contribution to Galactic Diffuse Gamma Ray Emission

Lin F. Yang, Joseph Silk, Alexander S. Szalay +3

Observations of diffuse Galactic gamma ray emission (DGE) by the Fermi Large Area Telescope (LAT) allow a detailed study of cosmic rays and the interstellar medium. However, diffus…

astro-ph.CO2013★ 181 cited

CANDELS+3D-HST: compact SFGs at z~2-3, the progenitors of the first quiescent galaxies

G. Barro, S. M. Faber, P. G. Perez-Gonzalez +32

We analyze the star-forming and structural properties of 45 massive (log(M/Msun)>10) compact star-forming galaxies (SFGs) at 2<z<3 to explore whether they are progenitors of compac…

astro-ph.CO2013★ 166 cited

Galaxy Zoo: Observing Secular Evolution Through Bars

Edmond Cheung, E. Athanassoula, Karen L. Masters +10

In this paper, we use the Galaxy Zoo 2 dataset to study the behavior of bars in disk galaxies as a function of specific star formation rate (SSFR), and bulge prominence. Our sample…

astro-ph.CO2013★ 100 cited

On the origin of the fundamental metallicity relation and the scatter in galaxy scaling relations

John C. Forbes, Mark R. Krumholz, Andreas Burkert +1

We present a simple toy model to understand what sets the scatter in star formation and metallicity of galaxies at fixed mass. The scatter ultimately arises from the intrinsic scat…

astro-ph.CO2013★ 41 cited

The High-Ion Content and Kinematics of Low-Redshift Lyman Limit Systems

Andrew J. Fox, Nicolas Lehner, Jason Tumlinson +9

We study the high-ionization phase and kinematics of the circumgalactic medium around low-redshift galaxies using a sample of 23 Lyman Limit Systems (LLSs) at 0.08<z<0.93 observed…

astro-ph.CO2013★ 163 cited

Tying Dark Matter to Baryons with Self-interactions

Manoj Kaplinghat, Ryan E. Keeley, Tim Linden +1

Self-interacting dark matter (SIDM) models have been proposed to solve the small-scale issues with the collisionless cold dark matter (CDM) paradigm. We derive equilibrium solution…

astro-ph.CO2013★ 69 cited

Low-mass galaxy assembly in simulations: regulation of early star formation by radiation from massive stars

Sebastian Trujillo-Gomez, Anatoly Klypin, Pedro Colin +3

Despite recent success in forming realistic present-day galaxies, simulations still form the bulk of their stars earlier than observations indicate. We investigate the process of s…

astro-ph.CO2013★ 164 cited

The Population of Giant Clumps in Simulated High-z Galaxies: In-situ and Ex-situ, Migration and Survival

Nir Mandelker, Avishai Dekel, Daniel Ceverino +3

We study the properties of giant clumps and their radial gradients in high- disc galaxies using AMR cosmological simulations. Our sample consists of 770 snapshots in the redshif…

astro-ph.CO2013★ 23 cited

Tracing the Mass Growth and Star Formation Rate Evolution of Massive Galaxies from z~6 to z~1 in the Hubble Ultra-Deep Field

Britt F. Lundgren, Pieter van Dokkum, Marijn Franx +8

We present an analysis of 1500 H160-selected photometric galaxies detected to a limiting magnitude of 27.8 in the HUDF, using imaging from the HST WFC3/IR camera in combinati…

astro-ph.CO2013★ 24 cited

Exploring the chemical link between local ellipticals and their high-redshift progenitors

Joel Leja, Pieter G. van Dokkum, Ivelina Momcheva +12

We present Keck/MOSFIRE K-band spectroscopy of the first mass-selected sample of galaxies at . Targets are selected from the 3D-HST Treasury survey. The six detected gala…

astro-ph.CO2013★ 60 cited

Confirmation of Small Dynamical and Stellar Masses for Extreme Emission Line Galaxies at z~2

Michael V. Maseda, Arjen van der Wel, Elisabete da Cunha +21

Spectroscopic observations from the Large Binocular Telescope and the Very Large Telescope reveal kinematically narrow lines (~50 km/s) for a sample of 14 Extreme Emission Line Gal…

astro-ph.CO2013★ 255 cited

A CANDELS - 3D-HST Synergy: Resolved Star Formation Patterns at 0.7 < z < 1.5

Stijn Wuyts, Natascha M. Forster Schreiber, Erica J. Nelson +20

We analyze the resolved stellar populations of 473 massive star-forming galaxies at 0.7 < z < 1.5, with multi-wavelength broad-band imaging from CANDELS and Halpha surface brightne…

astro-ph.CO2013★ 132 cited

The Progenitors of the Compact Early-Type Galaxies at High-Redshift

Christina C. Williams, Mauro Giavalisco, Paolo Cassata +19

We use GOODS and CANDELS images to identify progenitors of massive (log M > 10 Msun) compact "early-type" galaxies (ETGs) at z~1.6. Since merging and accretion increase the size of…

astro-ph.CO2013★ 130 cited

Mergers and Mass Accretion for Infalling Halos Both End Well Outside Cluster Virial Radii

Peter S. Behroozi, Risa H. Wechsler, Yu Lu +4

We find that infalling dark matter halos (i.e., the progenitors of satellite halos) begin losing mass well outside the virial radius of their eventual host halos. The peak mass occ…

astro-ph.CO2013★ 75 cited

The SLUGGS Survey: The globular cluster systems of three early-type galaxies using wide-field imaging

Sreeja S. Kartha, Duncan A. Forbes, Lee R. Spitler +3

We present the results from a wide-field imaging study of globular cluster (GC) systems in three early-type galaxies. Combinations of Subaru/Suprime-Cam, CFHT/MegaCam and HST/WFPC2…

astro-ph.CO2013★ 130 cited

The Mean Star-Forming Properties of QSO Host Galaxies

D. J. Rosario, B. Trakhtenbrot, D. Lutz +22

Quasi-stellar objects (QSOs) occur in galaxies in which supermassive black holes (SMBHs) are growing substantially through rapid accretion of gas. Many popular models of the co-evo…

astro-ph.CO2013★ 37 cited

The production of strong broad He II emission after the tidal disruption of a main-sequence star by a supermassive black hole

C. Martin Gaskell, P. Andrea Rojas Lobos

The tidal disruption event (TDE) PS1-10jh lacked strong Balmer lines but showed strong, broad, He II emission both before maximum light and for at least 8 months thereafter. Gezari…

astro-ph.CO2013★ 132 cited

The Rapid Decline in Metallicity of Damped Ly-alpha Systems at z~5

Marc Rafelski, Marcel Neeleman, Michele Fumagalli +2

We present evidence that the cosmological mean metallicity of neutral atomic hydrogen gas shows a sudden decrease at z>4.7 down to <Z>=-2.03(+0.09-0.11), which is 6 sigma deviant f…