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We study the morphological transformation from late types to early types and the quenching of galaxies with the seventh Data Release (DR7) of the Sloan Digital Sky Survey (SDSS). Both early type galaxies and late type galaxies are found to…

Astrophysics of Galaxies · Physics 2019-06-19 Chenxu Liu , Lei Hao , Huiyuan Wang , Xiaohu Yang

The specific star formation rate (sSFR) is commonly used to describe the level of galaxy star formation (SF) and to select quenched galaxies. However, being a relative measure of the young-to-old population, an ambiguity in its…

Astrophysics of Galaxies · Physics 2023-10-19 Samir Salim , Sandro Tacchella , Chandler Osborne , S. M. Faber , Janice C. Lee , Sara L. Ellison

Many disc galaxies in clusters have been found with bulges of similar age or younger than their surrounding discs, at odds with field galaxies of similar morphology and their expected inside-out formation. We use the EAGLE simulations to…

Astrophysics of Galaxies · Physics 2022-01-19 Joel Pfeffer , Kenji Bekki , Warrick J. Couch , Bärbel S. Koribalski , Duncan A. Forbes

Environment has long been known to impact the evolution of galaxies, but disentangling its effects from mass evolution requires careful analysis of statistically significant samples. By implementing advanced visualisation methods to test…

Using a sample of 4 galaxy clusters at $1.35 < z < 1.65$ and 10 galaxy clusters at $0.85 < z < 1.35$, we measure the environmental quenching timescale, $t_Q$, corresponding to the time required after a galaxy is accreted by a cluster for it…

We are encouraged by the improving abundance measurements for quasar damped absorption line systems to start a new study of galaxy chemical evolution from high to low redshifts. Our goal is a simple, robust model based on a synthesis of our…

Astrophysics · Physics 2007-05-23 A. C. Baker , G. P. Mathlin , D. K. Churches , M. G. Edmunds

There are three major axes to describe the evolution of galaxies, namely, time (redshift), space (environment) and mass (stellar mass). In this article, one topic each will be presented along these axes. (1) Based on the Subaru wide-field…

Astrophysics · Physics 2007-05-23 Tadayuki Kodama , Richard Bower , Philip Best , Patrick Hall , Toru Yamada , Masayuki Tanaka

We study the effects of galaxy environment on the evolution of the stellar-mass function (SMF) over 0.2 < z < 2.0 using the FourStar Galaxy Evolution (ZFOURGE) survey and NEWFIRM Medium-Band Survey (NMBS) down to the stellar-mass…

We present a pedagogical review on the formation and evolution of galaxies in groups, utilizing observational information from the Local Group to galaxies at z~6. The majority of galaxies in the nearby universe are found in groups, and…

Astrophysics · Physics 2015-06-24 Christopher J. Conselice

The environment is known to affect the formation and evolution of galaxies considerably best visible through the well-known morphology-density relationship. We study the effect of environment on the evolution of early-type galaxies for a…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Daniel Thomas

The shutdown of star formation in galaxies is generally termed `quenching'. Although quenching may occur through a variety of processes, the exact mechanism(s) that is in fact responsible for quenching is still in question. This paper…

The star formation history (SFH) of galaxies allow us to investigate when galaxies formed their stars and assembled their mass. We can constrain the SFH with high level of precision from galaxies with resolved stellar populations, since we…

Astrophysics of Galaxies · Physics 2019-02-18 Maria Argudo-Fernández , Médéric Boquien , Shiyin Shen , Fangting Yuan , Jun Yin , Ruixiang Chang , Lei Hao

New information has recently become available on the fundamental plane for various samples of early-type galaxies with redshift up to 1.3, both in clusters and in the field. This information is reviewed and clues are derived on the…

Astrophysics · Physics 2007-05-23 Sperello di Serego Alighieri , Barbara Lanzoni

A major problem in extragalactic astronomy is the inability to distinguish in a robust, physical, and model independent way how galaxy populations are related to each other and to their formation histories. A similar, but distinct, and also…

Astrophysics · Physics 2009-11-07 Christopher J. Conselice

To investigate star formation and assembly processes of massive galaxies, we present here a spatially-resolved stellar populations analysis of a sample of 45 elliptical galaxies (Es) selected from the CALIFA survey. We find rather flat age…

We study the spatially resolved star formation history and molecular gas distribution of 58 nearby galaxies, using integral field spectroscopy from the CALIFA survey and CO $J=1\rightarrow 0$ intensity mapping from the CARMA EDGE survey. We…

Astrophysics of Galaxies · Physics 2019-02-06 Ryan Chown , Cheng Li , E. Athanassoula , Niu Li , Christine D. Wilson , Lin Lin , Houjun Mo , Laura C. Parker , Ting Xiao

Detecting galaxies when their star-formation is being quenched is crucial to understand the mechanisms driving their evolution. We identify for the first time a sample of quenching galaxies selected just after the interruption of their star…

Astrophysics of Galaxies · Physics 2018-05-16 Salvatore Quai , Lucia Pozzetti , Annalisa Citro , Michele Moresco , Andrea Cimatti

The open-data revolution in astronomy is forcing the community to develop sophisticated analysis methods that heavily rely on realistic simulations. The phenomenology of the evolution of galaxy demographics can be described by a set of…

Cosmology and Nongalactic Astrophysics · Physics 2021-12-22 Lucia F. de la Bella , Adam Amara , Simon Birrer , William G. Hartley , Philipp Sudek

Galaxy evolution is commonly described through the time evolution of observational statistics such as luminosity functions and stellar mass functions. However, these quantities are projections of an underlying multivariate galaxy state…

Astrophysics of Galaxies · Physics 2026-05-01 Tsutomu T. Takeuchi

We explore the constraints that can be placed on the evolutionary timescales for typical low redshift galaxies evolving from the blue cloud through the green valley and onto the red sequence. We utilise galaxies from the GAMA survey with…