English
Related papers

Related papers: Does stellar mass assembly history vary with envir…

200 papers

We provide new constraints on the connection between galaxies in the local universe, identified by the Sloan Digital Sky Survey (SDSS), and dark matter halos and their constituent substructures in the $\Lambda$CDM model using WMAP7…

Cosmology and Nongalactic Astrophysics · Physics 2013-06-20 Rachel M. Reddick , Risa H. Wechsler , Jeremy L. Tinker , Peter S. Behroozi

Measurements of the accelerations of stars enabled by time-series extreme-precision spectroscopic observations, from pulsar timing, and from eclipsing binary stars in the Solar Neighborhood offer insights into the mass distribution of the…

A mass of dark matter halo is commonly defined as the spherical over-density (SO) mass with respect to a reference density, whereas the time evolution of an SO mass can be affected by the redshift evolution of the reference density as well…

Cosmology and Nongalactic Astrophysics · Physics 2019-09-25 Masato Shirasaki

We use the UniverseMachine to analyze the source of scatter between the central galaxy mass, the total stellar mass in the halo, and the dark matter halo mass. We also propose a new halo mass estimator, the cen+N mass: the sum of the…

Cosmology and Nongalactic Astrophysics · Physics 2020-01-22 Christopher Bradshaw , Alexie Leauthaud , Andrew Hearin , Song Huang , Peter Behroozi

We use the extensive catalog of dark matter haloes from the Millennium simulation to investigate the statistics of the mass accretion histories (MAHs) and accretion rates of ~500,000 haloes from redshift z=0 to 6. We find only about 25% of…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 James McBride , Onsi Fakhouri , Chung-Pei Ma

The primary method for inferring the stellar mass ($M_*$) of a galaxy is through spectral energy distribution (SED) modeling. However, the technique rests on assumptions such as the galaxy star formation history and dust attenuation law…

Astrophysics of Galaxies · Physics 2020-11-24 Sidney Lower , Desika Narayanan , Joel Leja , Benjamin D. Johnson , Charlie Conroy , Romeel Davé

We have undertaken a systematic study of pre-main sequence (PMS) stars spanning a wide range of masses (0.5 - 4 Msolar), metallicities (0.1 - 1 Zsolar) and ages (0.5 - 30 Myr). We have used the Hubble Space Telescope (HST) to identify and…

Solar and Stellar Astrophysics · Physics 2015-08-31 Guido De Marchi , Nino Panagia

We present evidence for stochastic star formation histories in low-mass (M* < 10^10 Msun) galaxies from observations within the Galaxy And Mass Assembly (GAMA) survey. For ~73,000 galaxies between 0.05<z<0.32, we calculate star formation…

We use KiDS weak lensing data to measure variations in mean halo mass as a function of several key galaxy properties (namely: stellar colour, specific star formation rate, Sersic index, and effective radius) for a volume-limited sample of…

Halo bias is the main link between the matter distribution and dark matter halos. In its simplest form, halo bias is determined by halo mass, but there are known additional dependencies on other halo properties which are of consequence for…

Astrophysics of Galaxies · Physics 2019-05-29 Gabriela Sato-Polito , Antonio D. Montero-Dorta , L. Raul Abramo , Francisco Prada , Anatoly Klypin

From a carefully selected sample of $52\,089$ galaxies and $10\,429$ groups, we investigate the variation of the low-redshift galaxy stellar mass function (GSMF) in the equatorial Galaxy And Mass Assembly (GAMA) dataset as a function of…

Astrophysics of Galaxies · Physics 2025-03-28 A. Sbaffoni , J. Liske , S. P. Driver , A. S. G. Robotham , E. N. Taylor

We investigate the relationship of kinematically misaligned galaxies with their large-scale environment, in the context of halo assembly bias. According to numerical simulations, halo age at fixed halo mass is intrinsically linked to the…

In this paper we study the stellar-mass dependence of galaxy clustering in the 6dF Galaxy Survey. The near-infrared selection of 6dFGS allows more reliable stellar mass estimates compared to optical bands used in other galaxy surveys. Using…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Florian Beutler , Chris Blake , Matthew Colless , D. Heath Jones , Lister Staveley-Smith , Lachlan Campbell , Quentin Parker , Will Saunders , Fred Watson

A simple, observationally-motivated model is presented for understanding how halo masses, galaxy stellar masses, and star formation rates are related, and how these relations evolve with time. The relation between halo mass and galaxy…

Astrophysics · Physics 2014-11-18 Charlie Conroy , Risa H. Wechsler

Using observations in the COSMOS field, we report an intriguing correlation between the star formation activity of massive (~10^{11.4}\msol) central galaxies, their stellar masses, and the large-scale (~10 Mpc) environments of their…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Jeremy L. Tinker , Matthew R. George , Alexie Leauthaud , Kevin Bundy , Alexis Finoguenov , Richard Massey , Jason Rhodes , Risa H. Wechsler

We present a semi-analytic, physically motivated model for dark matter halo concentration as a function of halo mass and redshift. The semi-analytic model combines an analytic model for the halo mass accretion history (MAH), based on…

Cosmology and Nongalactic Astrophysics · Physics 2015-08-06 Camila A. Correa , J. Stuart B. Wyithe , Joop Schaye , Alan R. Duffy

The emerging empirical picture of galaxy stellar mass (Ms) assembly shows that galaxy population buildup proceeds from top to down in Ms. By connecting galaxies to LCDM halos and their histories, individual (average) Ms growth tracks can be…

Cosmology and Nongalactic Astrophysics · Physics 2012-05-01 V. Avila-Reese , C. Firmani

In the era of large stellar spectroscopic surveys, there is emphasis on deriving not only stellar abundances but also ages for millions of stars. In the context of Galactic archeology, stellar ages provide a direct probe of the formation…

Solar and Stellar Astrophysics · Physics 2017-05-23 Aaron Dotter , Charlie Conroy , Phillip Cargile , Martin Asplund

We use subhalo abundance matching (SHAM) to model the stellar mass function (SMF) and clustering of the Baryon Oscillation Spectroscopic Survey (BOSS) "CMASS" sample at $z\sim0.5$. We introduce a novel method which accounts for the stellar…

We carry out a systematic investigation of the total mass density profile of massive (Mstar~3e11 Msun) early-type galaxies and its dependence on redshift, specifically in the range 0<z<1. We start from a large sample of SDSS early-type…

‹ Prev 1 4 5 6 7 8 10 Next ›