English
Related papers

Related papers: Galaxy interactions in filaments and sheets: effec…

200 papers

We analyze the galaxy pairs in a volume limited sample ($M_r \leq -21$) from the SDSS to study the effects of galaxy interactions on the star formation rate and colour of galaxies in different environments. We study the star formation rate…

Astrophysics of Galaxies · Physics 2021-08-13 Apashanka Das , Biswajit Pandey , Suman Sarkar , Arunima Dutta

We study the colour and star formation rates of paired galaxies in filaments and sheets using the EAGLE simulations. We find that the major pairs with pair separation $<50$ kpc are bluer and more star forming in filamentary environments…

Astrophysics of Galaxies · Physics 2023-09-07 Apashanka Das , Biswajit Pandey , Suman Sarkar

We use a sample of close galaxy pairs selected from the Sloan Digital Sky Survey Data Release 4 (SDSS DR4) to investigate in what environments galaxy mergers occur and how the results of these mergers depend on differences in local galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Sara L. Ellison , David R. Patton , Luc Simard , Alan W. McConnachie , Ivan K. Baldry , J. Trevor Mendel

Galaxies form and evolve within the diverse environments of the cosmic web. However, disentangling the effects of internal properties, local environments, and large-scale structures (LSS) on galaxy evolution involvessignificant…

Astrophysics of Galaxies · Physics 2025-04-04 Stefano Zarattini , J. Alfonso L. Aguerri

We analyse star formation rates derived from photometric and spectroscopic data of galaxies in pairs in different environments using the 2dF Galaxy Redshift Survey (2dFGRS) and the Sloan Digital Sky Survey (SDSS). The two samples comprise…

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

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 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 explore properties of close galaxy pairs and merging systems selected from the SDSS-DR4 in different environments with the aim to assess the relative importance of the role of interactions over global environmental processes. For this…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 Josefa Perez , Patricia Tissera , Nelson Padilla , M. Sol Alonso , Diego G. Lambas , .

We analyze the galaxy pairs in a set of volume limited samples from the SDSS to study the effects of minor interactions on the star formation rate (SFR) and colour of galaxies. We carefully design control samples of the isolated galaxies by…

Astrophysics of Galaxies · Physics 2023-08-25 Apashanka Das , Biswajit Pandey , Suman Sarkar

We analyze a set of volume limited samples from the SDSS to study the dependence of galaxy colour on different environments of the cosmic web. We measure the local dimension of galaxies to determine the geometry of their embedding…

Astrophysics of Galaxies · Physics 2020-09-30 Biswajit Pandey , Suman Sarkar

We study galaxy pair samples selected from the Sloan Digital Sky Survey (SDSS-DR7) and we perform an analysis of minor and major mergers with the aim of investigating the dependence of galaxy properties on interactions. We build a galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Diego G. Lambas , Sol Alonso , Valeria Mesa , Ana Laura O'Mill

We carried out a statistical analysis of galaxy pairs in hydrodynamical Lambda-CDM simulations. We focused on the triggering of star formation by interactions and analysed the enhancement of star formation activity in terms of orbital…

Astrophysics · Physics 2016-08-30 M. Josefa Perez , Patricia B. Tissera , Diego G. Lambas , Cecilia Scannapieco

We investigate the influence of interactions on the star formation by studying a sample of almost 1500 of the nearest galaxies, all within a distance of ~45 Mpc. We define the massive star formation rate (SFR), as measured from far-IR…

Astrophysics of Galaxies · Physics 2015-10-14 Johan H. Knapen , Mauricio Cisternas , Miguel Querejeta

We investigate the dependence of physical properties of galaxies on small and large scale density environment. The galaxy population consists of mainly passively evolving galaxies in comparatively low density regions of Sloan Digital Sky…

Astrophysics of Galaxies · Physics 2018-07-02 Jaswant K. Yadav , Xuelei Chen

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

Galaxy properties are known to be affected by their environment. This is well established for the extremes of the density scales, between the high-density cluster environment and the low-density field. It is however not fully understood how…

Astrophysics of Galaxies · Physics 2024-09-20 Callum J. O'Kane , Ulrike Kuchner , Meghan E. Gray , Alfonso Aragón-Salamanca

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…

Observations and simulations of interacting galaxies and mergers in the local universe have shown that interactions can significantly enhance the star formation rates (SFR) and fueling of Active Galactic Nuclei (AGN). However, at higher…

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

Both observations and simulations show that major tidal interactions or mergers between gas-rich galaxies can lead to intense bursts of starformation. Yet, the average enhancement in star formation rate (SFR) in major mergers and the…

‹ Prev 1 2 3 10 Next ›