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Cluster environments influence galaxy evolution by curtailing star formation activity, notably through ram-pressure stripping (RPS). In this study, using spatially resolved spectroscopic data from the SAMI Galaxy Survey, we identify…

Observationally, the quenching of star-forming galaxies appears to depend both on their mass and environment. The exact cause of the environmental dependence is still poorly understood, yet semi-analytic models (SAMs) of galaxy formation…

Astrophysics of Galaxies · Physics 2016-06-15 Dominik Steinhauser , Sabine Schindler , Volker Springel

Ram pressure stripping (RPS) is one of the most invoked mechanisms to explain the observed differences between cluster and field galaxies. In the local Universe, its effect on the galaxy star forming properties has been largely tackled and…

Galaxy clusters in the local Universe are dominated by massive quiescent galaxies with old ages, formed at high redshifts. It is debated whether their quenching is driven by internal processes or environmental effects, which has been…

Recent observations of galaxy clusters have shown that environmental effects apparently associated with the cluster begin to lower the star formation rates of galaxies at distances as great as three times the cluster virial radius. These…

Cosmology and Nongalactic Astrophysics · Physics 2010-12-07 Laura G. Book , Andrew J. Benson

We present a study of the spatial distribution and kinematics of star-forming galaxies in 30 massive clusters at 0.15<z<0.30, combining wide-field Spitzer 24um and GALEX NUV imaging with highly-complete spectroscopy of cluster members. The…

Astrophysics of Galaxies · Physics 2015-06-17 C. P. Haines , M. J. Pereira , G. P. Smith , E. Egami , A. Babul , A. Finoguenov , F. Ziparo , S. L. McGee , T. D. Rawle , N. Okabe , S. M. Moran

We conducted a panoramic spectroscopic campaign with MOSCA at the Calar Alto observatory. We acquired spectra of more than 500 objects. Approximately 150 of these spectra were of galaxies that are members of six different clusters, which…

Astrophysics · Physics 2009-11-13 M. Verdugo , B. L. Ziegler , B. Gerken

(Abridged) We present an analysis of the stellar populations of the gas-stripped outer disks of ten Virgo Cluster spiral galaxies, utilizing SparsePak integral field spectroscopy on the WIYN 3.5m telescope and GALEX UV photometry. The…

Astrophysics · Physics 2009-11-13 Hugh H. Crowl , Jeffrey D. P. Kenney

Using MUSE observations from the GASP survey, we study 54 galaxies undergoing ram-pressure stripping (RPS) spanning a wide range in galaxy mass and host cluster mass. We use this rich sample to study how the star formation rate (SFR) in the…

We use high resolution simulations to study the formation and distribution of galaxies within a cluster which forms hierarchically. We follow both dark matter and baryonic gas which is subject to thermal pressure, shocks and radiative…

Astrophysics · Physics 2009-09-25 C. S. Frenk , A. E. Evrard , S. D. M. White , FJ Summers

We develop a new numerical approach to describe the action of ram pressure stripping (RPS) within a semi-analytic model of galaxy formation and evolution which works in combination with non-radiative hydrodynamical simulations of galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2010-11-03 Tomás E. Tecce , Sofía A. Cora , Patricia B. Tissera , Mario G. Abadi , Claudia del P. Lagos

Ram-pressure stripping (RPS) is a well observed phenomenon of massive spiral galaxies passing through the hot intra-cluster medium (ICM) of galaxy clusters. For dwarf galaxies (DGs) within a cluster, the transformation from gaseous to…

Astrophysics of Galaxies · Physics 2020-04-08 Patrick Steyrleithner , Gerhard Hensler , Alessandro Boselli

Cold accretion and quenching are closely related aspects of galaxy evolution, as sustained gas supply is required to maintain star formation. High-redshift galaxy groups therefore provide a valuable laboratory for testing how the thermal…

At modest radii from the centre of galaxy clusters, individual galaxies may be infalling to the cluster for the first time, or have already visited the cluster core and are coming back out again. This latter population of galaxies is known…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Kevin A. Pimbblet

We study galaxies undergoing ram pressure stripping in the Virgo cluster to examine whether we can identify any discernible trend in their star formation activity. We first use 48 galaxies undergoing different stages of stripping based on…

Astrophysics of Galaxies · Physics 2021-03-25 Jae Yeon Mun , Ho Seong Hwang , Myung Gyoon Lee , Aeree Chung , Hyein Yoon , Jong Chul Lee

Galaxies in clusters are gas-deficient and a number of possible explanations for this observation have been advanced, including galaxy-cluster tidal interactions, galaxy harassment, and ISM-ICM gas stripping. In this paper, we use a…

Astrophysics · Physics 2009-11-13 Stephanie Tonnesen , Greg L. Bryan , J. H. van Gorkom

We investigate the recent and current star formation activity of galaxies as function of distance from the cluster center in a sample of 521 SDSS clusters at z<0.1. We show that when the BCGs are excluded from the galaxy sample, there is no…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Anja von der Linden , Vivienne Wild , Guinevere Kauffmann , Simon D. M. White , Simone Weinmann

We investigate the velocity vs. position phase space of z ~ 1 cluster galaxies using a set of 424 spectroscopic redshifts in 9 clusters drawn from the GCLASS survey. Dividing the galaxy population into three categories: quiescent,…

We study the formation of fifty-three galaxy cluster-size dark matter halos formed within a pair of cosmological LCDM N-body simulations, and track the accretion histories of cluster subhalos with masses large enough to host 0.1L* galaxies.…

We reexamine the systematic properties of local galaxy populations, using published surveys of star formation, structure, and gas content. After recalibrating star formation measures, we are able to reliably measure specific star formation…

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