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A non-zero mutual information between morphology of a galaxy and its large-scale environment is known to exist in SDSS upto a few tens of Mpc. It is important to test the statistical significance of these mutual information if any. We…

Astrophysics of Galaxies · Physics 2020-08-12 Suman Sarkar , Biswajit Pandey

The small-scale environment characterized by the local density is known to play a crucial role in deciding the galaxy properties but the role of large-scale environment on galaxy formation and evolution still remain a less clear issue. We…

Cosmology and Nongalactic Astrophysics · Physics 2016-12-30 Biswajit Pandey , Suman Sarkar

From the Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5), we extract a sample of 4594 galaxies at redshifts 0.02<z<0.03, complete down to a stellar mass of M=10^10 Msol. We quantify their structure (Sersic index), morphology (Sersic…

Astrophysics · Physics 2009-11-13 Arjen van der Wel

To study how the environment can influence the relation between stellar mass and effective radius of nearby galaxies (z < 0.12), we use a mass-complete sample extracted from the NYU-Value Added Catalogue. This sample contains almost 232000…

Astrophysics of Galaxies · Physics 2015-06-19 María Cebrián , Ignacio Trujillo

We investigate the relationship between environment, morphology, and the star formation rate -- stellar mass relation derived from a sample of star-forming galaxies (commonly referred to as the `star formation main sequence') in the COSMOS…

In this work, we investigate whether the location of galaxies within the large-scale structures (LSS) of the Universe affects their stellar mass ($M_\star$) and morphology. To this end, we attempt to disentangle the effects of local and…

Astrophysics of Galaxies · Physics 2026-05-05 G. Torres-Ríos , S. Verley , I. Pérez , M. Argudo-Fernández , B. Bidaran , S. Duarte Puertas , Y. K. González-Koda

We present a study of the spectroscopic and photometric properties of galaxies in six nearby clusters. We perform a partial correlation analysis on our dataset to investigate whether the correlation between star formation rates in galaxies…

Astrophysics · Physics 2009-11-10 Daniel Christlein , Ann Zabludoff

We investigate the dependence of physical properties of galaxies brighter than M_r=-18.0 in the SDSS on environment, as measured by local density using an adaptive smoothing kernel. We find that variations of galaxy properties with…

We use \sim 2000 galaxies belonging to different environments to show how the fractions of different galaxy morphological types vary with global environment and as function of galaxy stellar mass at low redshift. Considering mass limited…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Rosa Calvi , Bianca M. Poggianti , Giovanni Fasano , Benedetta Vulcani

The aim of this work is to study the effects of environment on the growth in size of galaxies. We examine the stellar mass-size relation for a sample of isolated galaxies interpreted as stellar systems where evolution has been mainly…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Mirian Fernández Lorenzo , Jack Sulentic , Lourdes Verdes-Montenegro , Maria del Carmen Argudo-Fernández

The galaxy size-luminosity and size-stellar mass relations are important constraints on the galactic baryon cycle of gas accretion, star formation, and feedback. There are conflicting claims in the literature regarding how environment…

Astrophysics of Galaxies · Physics 2026-01-14 Li-Wen Liao , Andrew Cooper

Most observed stars are part of a multiple star system, but the formation of such systems and the role of environment and various physical processes is still poorly understood. We present a suite of radiation-magnetohydrodynamic simulations…

We investigate the relationship between stellar mass, metallicity and gas content for a magnitude- and volume-limited sample of 260 nearby late-type galaxies in different environments, from isolated galaxies to Virgo cluster members. We…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 T. M. Hughes , L. Cortese , A. Boselli , G. Gavazzi , J. I. Davies

We analyse the relationships between galaxy morphology, colour, environment and stellar mass using data for over 100,000 objects from Galaxy Zoo, the largest sample of visually classified morphologies yet compiled. We conclusively show that…

We examine the relation between gas-phase oxygen abundance and stellar mass---the MZ relation---as a function of the large scale galaxy environment parameterized by the local density. The dependence of the MZ relation on the environment is…

Astrophysics of Galaxies · Physics 2017-04-12 Po-Feng Wu , H. Jabran Zahid , Ho Seong Hwang , Margaret J. Geller

We investigate the dependence of galaxy structure on a variety of galactic and environmental parameters for ~500,000 galaxies at z<0.2, taken from the Sloan Digital Sky Survey data release 7 (SDSS-DR7). We utilise bulge-to-total stellar…

We use an information theoretic framework to analyze data from the Galaxy Zoo 2 project and study if there are any statistically significant correlations between the presence of bars in spiral galaxies and their environment. We measure the…

Astrophysics of Galaxies · Physics 2021-01-19 Suman Sarkar , Biswajit Pandey , Snehasish Bhattacharjee

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

Exploiting a sample of 680 star-forming galaxies from the Padova-Millennium GalaxyGroup Catalog (PM2GC) (Calvi et al. 2011) in the range 0.038<z<0.104, we present a detailed analysis of the Star Formation Rate (SFR)-stellar mass (M_star)…

Astrophysics of Galaxies · Physics 2018-09-26 R. Calvi , B. Vulcani , B. M. Poggianti , A. Moretti , J. Fritz , G. Fasano

Galaxy structure and morphology is nearly always studied using the light originating from stars, however ideally one is interested in measuring structure using the stellar mass distribution. Not only does stellar mass trace out the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Michelle Lanyon-Foster , Christopher J. Conselice , Michael R. Merrifield
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