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We investigate the environmental dependence of star formation and the morphology of galaxies in the local universe based on a volume-limited sample (0.030<z<0.065 and M_r<M_r^*+2) constructed from the data of the Sloan Digital Sky Survey.…

We study the morphology of galaxy populations of the richest superclusters from the catalogue of superclusters of galaxies in the 2dF Galaxy Redshift Survey using the luminosity density distribution and Minkowski functional V3. We compare…

With the aim to assess the role of dense environments in galaxy interactions, properties we present an analysis of close galaxy pairs in groups and clusters, obtained from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7). We…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Sol Alonso , Valeria Mesa , Nelson Padilla , Diego G. Lambas

We explore how the group environment may affect the evolution of star-forming galaxies. We select 1197 Galaxy And Mass Assembly (GAMA) groups at $0.05\leq z \leq 0.2$ and analyze the projected phase space (PPS) diagram, i.e. the galaxy…

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

Using samples drawn from the Sloan Digital Sky Survey, we study the relationship between local galaxy density and the properties of galaxies on the red sequence. After removing the mean dependence of average overdensity (or "environment")…

Cosmology and Nongalactic Astrophysics · Physics 2010-07-14 Michael C. Cooper , Anna Gallazzi , Jeffrey A. Newman , Renbin Yan

We aim to investigate how the local environment influences the star formation history (SFH) of galaxies residing in various large-scale environments. We categorise a sample of 9384 galaxies into the three primary large scale structures…

We analyze the relationship between star formation (SF), substructure, and supercluster environment in a sample of 107 nearby galaxy clusters using data from the Sloan Digital Sky Survey. Previous works have investigated the relationships…

Astrophysics of Galaxies · Physics 2017-01-25 S. A. Cohen , R. C. Hickox , G. A. Wegner , M. Einasto , J. Vennik

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

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Daniel Thomas , Claudia Maraston , Kevin Schawinski , Marc Sarzi , Joseph Silk

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

Galaxies reside within dark matter halos, but their properties are influenced not only by their halo properties but also by the surrounding environment. We construct an interpretable neural network framework to characterize the surrounding…

Astrophysics of Galaxies · Physics 2025-10-01 Shun-ya S. Uchida , Suchetha Cooray , Atsushi J. Nishizawa , Tsutomu T. Takeuchi , Peter Behroozi

We investigate the environmental dependence of stellar population properties of galaxies in the local universe. Physical quantities related to the stellar content of galaxies are derived from a spectral synthesis method applied to a…

Astrophysics · Physics 2009-09-29 A. Mateus , Laerte Sodre , Roberto Cid Fernandes , Grazyna Stasinska

We analyse the effects of galaxy interactions on star formation in groups and clusters of galaxies with virial masses in the range $10^{13} - 10 ^{15} M_{\odot}$. We find a trend for galaxy-galaxy interactions to be less efficient in…

Astrophysics · Physics 2009-11-10 M. Sol Alonso , Patricia B. Tissera , Georgina Coldwell , Diego G. Lambas

We use a volume-limited galaxy sample from the SDSS Data Release 7 to explore the dependence of galactic conformity on the large-scale environment, measured on $\sim$ 4 Mpc scales. We find that the star formation activity of neighbour…

Astrophysics of Galaxies · Physics 2018-04-04 Shuangpeng Sun , Qi Guo , Lan Wang , Jie Wang , Liang Gao , Cedric G. Lacey , Jun Pan

The observed properties of galaxies are strongly dependent on both their total stellar mass and their morphology. Furthermore, the environment is known to play a strong role in shaping them. The galaxy population in the local universe that…

We review recent results on the dependence of various galaxy properties on environment at low redshift. As environmental indicators, we use group mass, group-centric radius, and the distinction between centrals and satellites; examined…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Simone M. Weinmann , Frank C. van den Bosch , Anna Pasquali

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…

Understanding the interaction between galaxies and their surroundings is central to building a coherent picture of galaxy evolution. Here we use GALEX imaging of a statistically representative sample of 23 galaxy groups at z=0.06 to explore…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Jesper Rasmussen , John S. Mulchaey , Lei Bai , Trevor J. Ponman , Somak Raychaudhury , Ali Dariush

This work analyses the properties of groups of galaxies in the surroundings of clusters. On the basis of a very large public Virgo Consortium Simulation, we identified systems of galaxies in a wide range of masses. Systems with masses…

Astrophysics · Physics 2009-11-10 C. J. Ragone , M. Merchan , H. Muriel , A. Zandivarez