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Radio observations offer a dust-unobscured view of galaxy star formation via the radio continuum-star formation rate (RC--SFR) relation. Emerging evidence of a stellar mass dependence in the RC--SFR relation raises the broader question of…

Merging systems at low redshift provide the unique opportunity to study the processes related to star formation in a variety of environments that presumably resemble those seen at higher redshifts. Previous studies of distant starbursting…

宇宙学与河外天体物理 · 物理学 2015-06-11 Pierre-Alain Duc , Pierre-Emmanuel Belles , Elias Brinks , Frederic Bournaud

There is ample observational evidence that the star formation rate (SFR) surface density, Sigma_SFR, is closely correlated with the surface density of molecular hydrogen, Sigma_H2. This empirical relation holds both for galaxy-wide averages…

宇宙学与河外天体物理 · 物理学 2015-06-04 Robert Feldmann , Nickolay Y. Gnedin , Andrey V. Kravtsov

Observations have revealed that the star formation rate (SFR) and stellar mass (M$_{\rm star}$) of star-forming galaxies follow a tight relation known as the galaxy main sequence. However, what physical information is encoded in this…

星系天体物理 · 物理学 2019-01-16 Jorryt Matthee , Joop Schaye

We study the star formation rate (SFR) versus molecular gas mass ($M_\mathrm{mol}$) scaling relation from hundreds to thousands parsec scales in two strongly lensed galaxies at redshift $z\sim 1$, the Cosmic Snake and A521. We trace SFR…

We study the dependence of the cross-correlation between galaxies and galaxy groups on group properties. Confirming previous results, we find that the correlation strength is stronger for more massive groups, in good agreement with the…

天体物理学 · 物理学 2009-11-13 Xiaohu Yang , H. J. Mo , Frank C. van den Bosch

We investigate the evolution of stellar population gradients from $z=2$ to $z=0$ in massive galaxies at large radii ($r > 2R_{\mathrm{eff}}$) using ten cosmological zoom simulations of halos with $6 \times 10^{12} M_{\odot} <…

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…

Infrared (IR) luminosity of galaxies originating from dust emission can be used as an indicator of the star formation rate (SFR). Inoue et al. (2000, IHK) have derived a formula for the conversion from IR luminosity to SFR by using the…

天体物理学 · 物理学 2009-11-10 Hiroyuki Hirashita , Veronique Buat , Akio K. Inoue

The relation between dark matter halos and the loci of star formation at high redshift is a pressing question in contemporary cosmology. Matching the abundance of halos to the abundance of infrared (IR) galaxies, we explicit the link…

宇宙学与河外天体物理 · 物理学 2012-04-03 Matthieu Béthermin , Olivier Doré , Guilaine Lagache

We present a study to determine how star formation contributes to galaxy growth since z=1.5 over five decades in galaxy stellar mass. We investigate the specific star formation rate (SSFR; star formation rate [SFR] per unit galaxy stellar…

天体物理学 · 物理学 2009-11-10 A. E. Bauer , N. Drory , G. J. Hill , G. Feulner

There is evidence that the well-established mass-metallicity relation in galaxies is correlated with a third parameter: star formation rate (SFR). The strength of this correlation may be used to disentangle the relative importance of…

星系天体物理 · 物理学 2016-11-01 O. Grace Telford , Julianne J. Dalcanton , Evan D. Skillman , Charlie Conroy

We present a method to flexibly and self-consistently determine individual galaxies' star formation rates (SFRs) from their host haloes' potential well depths, assembly histories, and redshifts. The method is constrained by galaxies'…

星系天体物理 · 物理学 2019-07-30 Peter Behroozi , Risa Wechsler , Andrew Hearin , Charlie Conroy

In this paper we investigate the level of star formation activity within nearby molecular clouds. We employ a uniform set of infrared extinction maps to provide accurate assessments of cloud mass and structure and compare these with…

星系天体物理 · 物理学 2015-05-19 Charles J. Lada , Marco Lombardi , João F. Alves

Star formation is one of the key factors that shapes galaxies. This process is relatively well understood from both simulations and observations on a small "local" scale of individual giant molecular clouds and also on a "global"…

星系天体物理 · 物理学 2020-07-15 Charles Aouad , Philip James , Igor Chilingarian

What main mechanisms set the star formation rate (SFR) of galaxies? This PhD thesis is a quest into the influences of gas and active galactic nuclei (AGNs) on the SFR, with particular focus on massive galaxies at z~2. First, a new code if…

星系天体物理 · 物理学 2017-01-11 Karen P. Olsen

(Abridged) The Kennicutt--Schmidt law relates the face-on star formation rate (SFR) per unit area with the face-on gaseous column density in nearby galaxies. Applying this relation to damped Lya absorption systems (DLAs) of neutral hydrogen…

天体物理学 · 物理学 2008-11-26 Arthur M. Wolfe , Hsiao-Wen Chen

The connection between galaxy star formation rate (SFR) and dark matter (DM) is of paramount importance for the extraction of cosmological information from next generation spectroscopic surveys that will target emission line star forming…

宇宙学与河外天体物理 · 物理学 2020-12-23 Adi Nusser , Gustavo Yepes , Enzo Branchini

We analyzed 17 galaxy clusters, and investigated, for the first time, the dependence of the SFR and sSFR as a function of projected distance (as a proxy for environment) and stellar mass for cluster galaxies in an intermediate-to-high…

星系天体物理 · 物理学 2018-06-01 Tatiana F. Lagana , M. P. ulmer

Using data from the mid-infrared to millimeter wavelengths for individual galaxies and for stacked ensembles at 0.5<z<2, we derive robust estimates of dust masses (Mdust) for main sequence (MS) galaxies, which obey a tight correlation…

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