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We attempt to determine the dominant processes acting on star-forming disk galaxies as a result of the cluster environment by studying the normalised rates and radial distributions of star formation in galaxies within low-redshift clusters.…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 C. F. Bretherton , C. Moss , P. A. James

Despite the importance of feedback from active galactic nuclei (AGNs) in models of galaxy evolution, observational constraints on the influence of AGN feedback on star formation remain weak. To this end, we have compared the star formation…

We study the abundance of star-forming and quiescent galaxies in a sample of 21 massive clusters at 0.5<z<0.7, detected with the Planck satellite. We measure the cluster galaxy stellar mass function (SMF), which is a fundamental observable…

Astrophysics of Galaxies · Physics 2018-11-07 Remco F. J. van der Burg , Sean McGee , Herve Aussel , Hakon Dahle , Monique Arnaud , Gabriel W. Pratt , Adam Muzzin

Nearby dwarf irregular galaxies were searched for compact star clusters using data from the HST archives. Three of the galaxies were found to host both populous clusters (M_V<-9.5 at a fiducial age of 10 Myr) and super-star clusters…

Astrophysics · Physics 2009-11-07 Olivia H. Billett , Deidre A. Hunter , Bruce G. Elmegreen

The formation of massive stellar clusters is intricately linked to star formation on local and global scales. All actively star forming galaxies are forming clusters, and the local initial conditions likely determine whether bound massive…

Cosmology and Nongalactic Astrophysics · Physics 2012-08-17 Nate Bastian

We present an analysis of star-formation and nuclear activity in galaxies as a function of both luminosity and environment in the SDSS DR4 dataset. Using a sample of 27753 galaxies at 0.005<z<0.037 that is >90% complete to Mr=-18.0 we find…

Astrophysics · Physics 2009-11-13 C. P. Haines , A. Gargiulo , F. La Barbera , A. Mercurio , P. Merluzzi , G. Busarello

We discuss the nature and origin of the nuclear activity observed in a sample of 292 SDSS narrow-emission-line galaxies, considered to have formed and evolved in isolation. All these galaxies are spiral like and show some kind of nuclear…

Cosmology and Nongalactic Astrophysics · Physics 2011-08-03 R. Coziol , J. P. Torres-Papaqui , I. Plauchu-Frayn , J. M. Islas-Islas , R. A. Ortega-Minakata , D. M. Neri Larios , H. Andernach

We investigate the role of dense environments in suppressing star formation by studying $\rm \log_{10}(M_\star/M_\odot) > 9.7$ star-forming galaxies in nine clusters from the Local Cluster Survey ($0.0137 < z < 0.0433$) and a large…

Observations have revealed prodigious amounts of star formation in starburst galaxies as traced by dust and molecular emission, even at large redshifts. Recent work shows that for both nearby spiral galaxies and distant starbursts, the…

We study the young star cluster populations in 23 dwarf and irregular galaxies observed by the HST Legacy ExtraGalactic Ultraviolet Survey (LEGUS), and examine relationships between the ensemble properties of the cluster populations and…

The inner few hundred parsecs of the Milky Way harbours gas densities, pressures, velocity dispersions, an interstellar radiation field and a cosmic ray ionisation rate orders of magnitude higher than the disc; akin to the environment found…

Astrophysics of Galaxies · Physics 2017-06-21 A. T. Barnes , S. N. Longmore , C. Battersby , J. Bally , J. M. D. Kruijssen , J. D. Henshaw , D. L. Walker

In this work, we study the relation of cosmic environment and morphology with the star-formation (SF) and the stellar population of galaxies. Most importantly, we examine if this relation differs for systems with active and non-active…

Astrophysics of Galaxies · Physics 2023-07-12 G. Mountrichas , G. Yang , V. Buat , B. Darvish , M. Boquien , Q. Ni , D. Burgarella , L. Ciesla

We present an analysis of the galaxy population of the intermediate X-ray luminosity galaxy cluster, Abell 1691, from SDSS and Galaxy Zoo data to elucidate the relationships between environment and galaxy stellar mass for a variety of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Kevin A. Pimbblet , Peter C. Jensen

We present first results of a study aimed to constrain the star formation rate and dust content of galaxies at z~2. We use a sample of BzK-selected star-forming galaxies, drawn from the COSMOS survey, to perform a stacking analysis of their…

To figure out the effect of stellar mass and local environment on morphological transformation and star formation quenching in galaxies, we use the massive ($M_* \geq 10^{10} M_{\odot}$) galaxies at $0.5 \leq z \leq 2.5$ in five fields of…

Astrophysics of Galaxies · Physics 2021-12-22 Shuang Liu , Yizhou Gu , Qirong Yuan , Shiying Lu , Min Bao , Guanwen Fang , Lulu Fan

(Abridged) We assemble a sample of 3258 low-redshift galaxies from the SDSS DR6 with complementary photometric observations by GALEX, 2MASS and IRAS at far-ultraviolet and infrared wavelengths. We use a recent, simple but physically…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Elisabete da Cunha , Celine Eminian , Stephane Charlot , Jeremy Blaizot

We perform the first spatially-resolved stellar population study of galaxies in the early universe (z = 3.5 - 6.5), utilizing the Hubble Space Telescope Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) imaging…

We used the time since infall (TSI) of galaxies, obtained from the Yonsei Zoom-in Cluster Simulation, and the star formation rate (SFR) from the Sloan Digital Sky Survey (SDSS) Data Release 10 to study how quickly star formation of disk…

Astrophysics of Galaxies · Physics 2020-03-25 Jinsu Rhee , Rory Smith , Hoseung Choi , Emanuele Contini , S. Lyla Jung , San Han , Sukyoung K. Yi

Galaxy morphologies and star-formation rates depend on environment. Galaxies in under-dense regions are generally star-forming and disky whereas galaxies in overdense regions tend to be early-type and not actively forming stars. The…

Astrophysics of Galaxies · Physics 2015-11-04 Ian D. Roberts , Laura C. Parker , Ananthan Karunakaran

In this contribution, I present a simplified overview of the evolution of the disk galaxy population since z=1, and a brief discussion of a few open questions. Galaxy evolution surveys have found that the disk galaxy population forms stars…

Astrophysics · Physics 2008-01-07 Eric F. Bell