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Using a sample of galaxy groups selected from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7), we examine the alignment between the orientation of galaxies and their surrounding large scale structure in the context of the cosmic web.…

Cosmology and Nongalactic Astrophysics · Physics 2013-12-05 Youcai Zhang , Xiaohu Yang , Huiyuan Wang , Lei Wang , H. J. Mo , Frank C. van den Bosch

Using single-component fits to SDSS/UKIDSS images of galaxies in the G09 region of the GAMA survey we study radial colour gradients across the galaxy population. We use the multiwavelength information provided by MegaMorph analysis of…

Cosmological simulations predict significant secondary dependencies of halo clustering on internal properties and environment. Detecting these subtle signals in observational data remains challenging, with important ramifications for galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2026-02-25 Facundo Rodriguez , Antonio D. Montero-Dorta

Galaxies in cosmic voids have been reported with properties related to a delayed evolution with respect to the Universe in general. These characteristics reflect the interaction of galaxies with the environment. However, it is not clear the…

We compare environmental effects in two analogous samples of galaxies, one from the Sloan Digital Sky Survey (SDSS) and the other from a semi-analytic model (SAM) based on the Millennium Simulation (MS), to test to what extent current SAMs…

Astrophysics · Physics 2009-11-13 Nicolas B. Cowan , Zeljko Ivezic

Using a volume-limited sample of Main Galaxies from the SDSS Data Release 5, we investigate the dependence of galaxy properties on local environment. For each galaxy, the local three-dimensional density is calculated. We find that galaxy…

Astrophysics · Physics 2009-11-19 Xin-Fa Deng , Ji-Zhou He , Qun Zhang , Cong-Gen He , Peng Jiang , Yong Xin

We use a sample of galaxy groups selected from the SDSS DR 4 with an adaptive halo-based group finder to probe how the clustering strength of groups depends on their masses and colors. In particular, we determine the relative biases of…

Astrophysics · Physics 2009-11-19 Yu Wang , Xiaohu Yang , H. J. Mo , Frank C. van den Bosch , Simone M. Weinmann , Yaoquan Chu

We present the results obtained on the color distribution of galaxies in the CFHTLS-Deep Field Survey Data Release 03. Photometric redshifts have been computed using a standard SED fitting approach, with a new version of the public code…

Astrophysics · Physics 2007-05-23 F. Ienna , R. Pello

The relationship between galaxy properties and environment is a widely discussed topic within astrophysics. Here we use galaxy samples from hydrodynamical re-simulations to examine this relationship. We use the over-density ($\delta_1$)…

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

To understand the role of the environment in galaxy formation, evolution, and present-day properties, it is essential to study the multi-frequency behavior of different galaxy populations under various environmental conditions. We…

Astrophysics of Galaxies · Physics 2016-05-04 A. Poudel , P. Heinämäki , P. Nurmi , P. Teerikorpi , E. Tempel , H. Lietzen , M. Einasto

With a large sample of bright, low-redshift galaxies with optical$-$near-IR imaging from the GAMA survey we use bulge-disc decompositions to understand the wavelength-dependent behavior of single-S\'ersic structural measurements. We denote…

The evolutionary path followed by a galaxy shapes its internal structure, and, in particular, its internal colour variation. We present a study of the internal colour variation within galaxies from the Seventh Data Release of the Sloan…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 V. Gonzalez-Perez , F. J. Castander , G. Kauffmann

We use data from the SDSS to investigate the evolution of the large-scale galaxy bias as a function of luminosity for red galaxies. We carefully consider correlation functions of galaxies selected from both photometric and spectroscopic…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-17 Ashley J. Ross , Rita Tojeiro , Will J. Percival

Using galaxies from the Sloan Digital Sky Survey Data Release 7 (SDSS DR7) along with haloes from the dark matter only constrained ELUCID (Exploring the Local Universe with the reConstructed Initial Density field) simulation, we examine the…

Cosmology and Nongalactic Astrophysics · Physics 2025-04-29 Youcai Zhang , Xiaohu Yang , Hong Guo , Peng Wang , Feng Shi

Aims. This study aims to explore the relationship between the physical properties of different galaxy subclasses and their environment based on the analysis of 31 631 VIMOS Public Extragalactic Redshift Survey (VIPERS) galaxies observed at…

Astrophysics of Galaxies · Physics 2022-10-19 M. Siudek , K. Malek , A. Pollo , A. Iovino , C. P. Haines , M. Bolzonella , O. Cucciati , A. Gargiulo , B. Granett , J. Krywult , T. Moutard , M. Scodeggio

We use multi-wavelength data from the Galaxy and Mass Assembly (GAMA) survey to explore the cause of red optical colours in nearby (0.002<z<0.06) spiral galaxies. We show that the colours of red spiral galaxies are a direct consequence of…

We study the properties of SDSS galaxies with and without AGN detection as a function of the local and global environment measured via the local density, the mass of the galaxy host group (parameterised by the group luminosity) and distance…

Cosmology and Nongalactic Astrophysics · Physics 2011-04-07 Nelson Padilla , Diego Garcia Lambas , Roberto Gonzalez

We have quantified the average filamentarity of the galaxy distribution in seven nearly two dimensional strips from the SDSS DR5 using a volume limited sample in the absolute magnitude range -21 < M_r < -20. The average filamentarity of…

Astrophysics · Physics 2009-11-13 Biswajit Pandey , Somnath Bharadwaj
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