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We apply the empirical method built for z=0 in the previous work of Wang et al. to a higher redshift, to link galaxy stellar mass directly with its hosting dark matter halo mass at z~0.8. The relation of the galaxy stellar mass and the host…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Lan Wang , Y. P. Jing

We introduce a new photometric estimator of the HI mass fraction (M_HI/M_*) in local galaxies, which is a linear combination of four parameters: stellar mass, stellar surface mass density, NUV-r colour, and g-i colour gradient. It is…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Cheng Li , Guinevere Kauffmann , Jian Fu , Jing Wang , Barbara Catinella , Silvia Fabello , David Schiminovich , Wei Zhang

We select a sample of young passive galaxies from the Sloan Digital Sky Survey Data Release 7 in order to study the processes that quench star formation in the local universe. Quenched galaxies are identified based on the contribution of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 J. Trevor Mendel , Luc Simard , Sara L. Ellison , David R. Patton

We use the galaxy stellar mass and halo merger tree information from the semi-analytic model galaxy catalogue of Font et al. (2009) to examine the accretion of galaxies into a large sample of groups and clusters, covering a wide range in…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Sean L. McGee , Michael L. Balogh , Richard G. Bower , Andreea S. Font , Ian G. McCarthy

We derive the stellar-to-halo mass relations, SHMR, of local blue and red central galaxies separately, as well as the fraction of halos hosting blue/red central galaxies. We find that: 1) the SHMR of central galaxies is segregated by color,…

Astrophysics of Galaxies · Physics 2015-06-22 A. Rodriguez-Puebla , V. Avila-Reese , X. Yang , S. Foucaud , N. Drory , Y. P. Jing

One of the challenges in understanding the quenching processes for galaxies is connecting progenitor star-forming populations to their descendant quiescent populations over cosmic time. Here we attempt a novel approach to this challenge by…

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

We study galactic star-formation activity as a function of environment and stellar mass over 0.5<z<2.0 using the FourStar Galaxy Evolution (ZFOURGE) survey. We estimate the galaxy environment using a Bayesian-motivated measure of the…

We investigate the environmental quenching of galaxies, especially those with stellar masses (M*)$<10^{9.5} M_\odot$, beyond the local universe. Essentially all local low-mass quenched galaxies (QGs) are believed to live close to massive…

We extend the phenomenological study of the evolving galaxy population of Peng et al (2010) to the central/satellite dichotomy in Yang et al. SDSS groups. We find that satellite galaxies are responsible for all the environmental effects in…

Cosmology and Nongalactic Astrophysics · Physics 2012-09-04 Yingjie Peng , Simon J. Lilly , Alvio Renzini , Marcella Carollo

We study the occupation statistics of galaxies in dark matter haloes using galaxy groups identified from the 2-degree Field Galaxy Redshift Survey with the halo-based group finder of Yang et al. The occupation distribution is considered…

Astrophysics · Physics 2009-11-10 Xiaohu Yang , H. J. Mo , Y. P. Jing , Frank C. van den Bosch

We present the stellar mass-[Fe/H] and mass-[Mg/H] relation of quiescent galaxies in two galaxy clusters at $z\sim0.39$ and $z\sim0.54$. We derive the age, [Fe/H], and [Mg/Fe] for each individual galaxy using a full-spectrum fitting…

Astrophysics of Galaxies · Physics 2020-01-08 Nicha Leethochawalit , Evan N. Kirby , Richard S. Ellis , Sean M. Moran , Tommaso Treu

We present a study on the clustering of a stellar mass selected sample of 18,482 galaxies with stellar masses M*>10^10M(sun) at redshifts 0.4<z<2.0, taken from the Palomar Observatory Wide-field Infrared Survey. We examine the clustering…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-15 S. Foucaud , C. J. Conselice , W. G. Hartley , K. P. Lane , S. P. Bamford , O. Almaini , K. Bundy

We analyse the evolution of environmental quenching efficiency, the fraction of quenched cluster galaxies that would be star-forming if they were in the field, as a function of redshift in 14 spectroscopically confirmed galaxy clusters with…

We present an analysis of the clustering of galaxies as a function of their stellar mass at 1 < z < 2 using data from the NEWFIRM Medium Band Survey (NMBS). The precise photometric redshifts and stellar masses that the NMBS produces allows…

Using a sample of 25683 star-forming and 2821 passive galaxies at $z\sim2$, selected in the COSMOS field following the BzK color criterion, we study the hosting halo mass and environment of galaxies as a function of their physical…

The assembly of galaxies over cosmic time is tightly connected to the assembly of their host dark matter halos. We investigate the stellar mass growth history and the chemical enrichment history of central galaxies in SDSS-MaNGA. We find…

The empirical model of Lu et al. 2014a for the relation between star formation rate and halo mass growth is adopted to predict the classical bulge mass ($M_{\rm cb}$) - total stellar mass ($M_\star$) relation for central galaxies. The…

Astrophysics of Galaxies · Physics 2015-06-22 Zhankui Lu , H. J. Mo

We use TNG and EAGLE hydrodynamic simulations to investigate the central galaxy - dark matter halo relations that are needed for a halo-based empirical model of star formation in galaxies. Using a linear dimension reduction algorithm and a…

Astrophysics of Galaxies · Physics 2021-03-24 Yangyao Chen , H. J. Mo , Cheng Li , Kai Wang

We identify the intrinsic dependence of star formation quenching on a variety of galactic and environmental parameters, utilizing a machine learning approach with Random Forest classification. We have previously demonstrated the power of…

Astrophysics of Galaxies · Physics 2023-02-22 Asa F. L. Bluck , Joanna M. Piotrowska , Roberto Maiolino
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