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We present in this paper a new three-dimensional galaxy classification system designed to account for the diversity of galaxy properties in the nearby universe. To construct this system we statistically analyse a sample of >22,000 galaxies…

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

We measure the environmental dependence, where environment is defined by the distance to the third nearest neighbor, of multiple galaxy properties inside the Environmental COntext (ECO) catalog. We focus primarily on void galaxies, which we…

We study the properties of associations of dwarf galaxies and their dependence on the environment. Associations of dwarf galaxies are extended systems composed exclusively of dwarf galaxies, considering as dwarf galaxies those galaxies less…

We study star formation in a sample of 1204 galaxies in minor (| \Delta m_z | \geq 2) pairs and compact groups, drawn from the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). We analyze an analogous sample of 2409 galaxies in major (|…

Astrophysics · Physics 2008-11-26 Deborah Freedman Woods , Margaret J. Geller

These notes collect together current work on the effect of the environment on galaxy formation and evolution. They are broken into four distinct parts. The first deals with the observational debate surrounding the question of whether…

Astrophysics · Physics 2007-05-23 Richard G Bower

In this paper, we use photometric data from the S-PLUS DR4 survey to identify isolated galaxy pairs and analyse their characteristics and properties. Our results align with previous spectroscopic studies, particularly in luminosity function…

According to the $\Lambda$ cold dark matter model of galaxy formation, the hierarchical assembly process is scale-free and interactions between galaxies in all mass ranges are expected. The effects of interactions between dwarf galaxies on…

Astrophysics of Galaxies · Physics 2023-12-27 Smitha Subramanian , Chayan Mondal , Venu Kalari

We present a structural analysis of nearby galaxies in spiral-spiral pairs in optical BVRI bands and compare with the structures of isolated spiral galaxies and galaxies in ongoing mergers. We use these comparisons to determine how galaxy…

Astrophysics · Physics 2009-11-10 H. Hernandez-Toledo , V. Avila-Reese , C. J. Conselice , I. Puerari

We examine the origins of the bimodality observed in the global properties of galaxies around a stellar mass of 3x10^10 M_sun by comparing the environmental dependencies of star-formation for the giant and dwarf galaxy populations. The…

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

The 5 independent correlations between the properties of galaxies observed outside big clusters must set such strong constraints on any theory of galaxy formation that it is hard to imagine any but the right one passing muster; certainly…

Astrophysics of Galaxies · Physics 2017-03-09 M J Disney

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…

Using a sample of cosmic voids identified in the Sloan Digital Sky Survey Data Release 7, we study the star formation activity of void galaxies. The properties of galaxies living in voids are compared with those of galaxies living in the…

Astrophysics of Galaxies · Physics 2015-06-23 Elena Ricciardelli , Antonio Cava , Jesus Varela , Vicent Quilis

In a hierarchical universe, mergers may be an important mechanism not only in increasing the mass of galaxies but also in driving the color and morphological evolution of galaxies. We use a large sample of ~1000 simulated galaxies of…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Stephanie Tonnesen , Renyue Cen

We investigate the impact of local environment on the galaxy stellar mass function (SMF) spanning a wide range of galaxy densities from the field up to dense cores of massive galaxy clusters. Data are drawn from a sample of eight fields…

We present a study of the environment of barred galaxies using galaxies drawn from the SDSS. We use several different statistics to quantify the environment: the projected two-point cross-correlation function, the background-subtracted…

Astrophysics of Galaxies · Physics 2016-06-29 Bernardo Cervantes Sodi , Cheng Li , Changbom Park , Lixin Wang

We present a study characterizing the environments of galaxies in the redshift range of 0.4 < z < 1 based on data from the POWIR near infrared imaging and DEEP2 spectroscopic redshift surveys, down to a stellar mass of log M* = 10.25 M_sun.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-20 Ruth Grützbauch , Christopher J. Conselice , Jesús Varela , Kevin Bundy , Michael C. Cooper , Ramin Skibba , Christopher N. A. Willmer

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

We study the mass-size relation of quiescent galaxies across various environments, with a particular focus on its environmental dependence at the low-mass part of $\log(M_\mathrm{star}/M_{\odot})\lesssim10.0$. Our sample consists of 13,667…

Astrophysics of Galaxies · Physics 2023-10-12 Yongmin Yoon , Jae-Woo Kim , Jongwan Ko

Galaxy star formation rates (SFRs) are sensitive to the local environment; for example, the high-density regions at the cores of dense clusters are known to suppress star formation. It has been suggested that galaxy transformation occurs…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 K. Tyler , G. H. Rieke , D. J. Wilman , S. L. McGee , R. G. Bower , L. Bai , J. S. Mulchaey , L. C. Parker , Y. Shi , D. Pierini