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相关论文: The Build-up of the Colour-Magnitude Relation as a…

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The properties of galaxies are strongly correlated with their environment, with red galaxies dominating galaxy clusters and blue galaxies dominating the general field. However, not all field galaxies are young: studies of the colors, line…

天体物理学 · 物理学 2007-05-23 Pieter van Dokkum , Ryan Quadri

We present environmental dependence of the build-up of the colour-magnitude relation (CMR) at z ~ 0.8. It is well established that massive early-type galaxies exhibit a tight CMR in clusters up to at least z ~ 1. The faint end of the…

天体物理学 · 物理学 2009-11-13 Yusei Koyama , Tadayuki Kodama , Masayuki Tanaka , Kazuhiro Shimasaku , Sadanori Okamura

Using galaxy clusters from the ESO Distant Cluster Survey, we study how the distribution of galaxies along the colour-magnitude relation has evolved since z~0.8. While red-sequence galaxies in all these clusters are well described by an…

We are able to extend the investigation of the color-morphology-density-radius relations, for bright and faint galaxies, to $R \gtrsim 3 \times R_{200}$ and to very low density regions, probing the transition region between cluster and…

宇宙学与河外天体物理 · 物理学 2013-12-04 P. A. A. Lopes , A. L. B. Ribeiro , S. B. Rembold

In order to assess whether the environment has a significant effect on galaxy sizes, we compare the mass--size relations of cluster and field galaxies in the $0.4 < z < 0.8$ redshift range from the ESO Distant Cluster Survey (EDisCS) using…

The evolution of galaxies is known to be connected to their position within the large-scale structure and their local environmental density. We investigate the relative importance of these using the underlying dark matter density field…

星系天体物理 · 物理学 2026-02-11 Catherine Gallagher , Tariq Yasin , Richard Stiskalek , Harry Desmond , Matt J. Jarvis

We analyse the B-R_c colors of galaxies as functions of luminosity and local galaxy density using a large photometric redshift catalog based on the Red-Sequence Cluster Survey. We select two samples of galaxies with a magnitude limit of…

天体物理学 · 物理学 2009-11-11 H. K. C. Yee , B. C. Hsieh , Huan Lin , M. D. Gladders

The dependence of the sequence of red galaxies (RS) with the environment is investigated using field, group, and cluster galaxies drawn from the SDSS. Our work focuses in studying the mean colour ($\mu_R$) and the scatter ($\sigma_R$) of…

宇宙学与河外天体物理 · 物理学 2015-05-14 Hector J. Martinez , Valeria Coenda , Hernan Muriel

The relationship between galaxy size and environment has remained enigmatic, with over a decade of conflicting results. We present one of the first comprehensive studies of the variation of galaxy radius with environment beyond the local…

We study the enviromental dependence and the morphological composition of the galaxy color-magnitude diagram at z~0.7, using a pilot sub-sample of ~2000 galaxies from the COSMOS surve, with I_AB<24, photometric redshift within 0.61<z<0.85…

Color gradients in early-type galaxies contain valuable clues about their formation and evolutionary histories and mechanisms. We examine color gradients in 1,700 early-type galaxies in 159 galaxy clusters spanning a redshift range of 0.05…

天体物理学 · 物理学 2009-11-11 F. La Barbera , R. R. de Carvalho , R. Gal , G. Busarello , P. Merluzzi , M. Capaccioli , S. G. Djorgovski

Using a sample of 19,464 galaxies drawn from the DEEP2 Galaxy Redshift Survey, we study the relationship between galaxy color and environment at 0.4 < z < 1.35. We find that the fraction of galaxies on the red sequence depends strongly on…

We investigate the redshift and luminosity evolution of the galaxy colour-density relation using the data from the First Epoch VIMOS-VLT Deep Survey (VVDS) on scales of R=5 h^(-1)Mpc up to redshift z ~ 1.5. While at lower redshift we…

At z=0, clusters are primarily populated by red, elliptical and massive galaxies, while blue, spiral and lower-mass galaxies are common in low-density environments. Understanding how and when these differences were established is of…

宇宙学与河外天体物理 · 物理学 2015-05-20 David Sobral , Philip Best , Ian Smail , Jim Geach , HiZELS team

[abridged] We analyze a sample of 9 massive clusters at 0.4<z<0.6 observed with MegaCam in 4 photometric bands (g,r,i,z) from the core to a radius of 5 Mpc (~4000 galaxies). Galaxy cluster candidates are selected using photometric redshifts…

宇宙学与河外天体物理 · 物理学 2015-05-13 M. Huertas-Company , G. Foex , G. Soucail , R. Pello

We study the relationship between galaxy luminosity, color, and environment in a cosmological simulation of galaxy formation. We compare the predicted relationship with that found for SDSS galaxies and find that the model successfully…

We present an analysis of the effects of environment on the photometric properties of galaxies in the core of the Shapley Supercluster at z=0.05, one of the most massive structures in the local universe. The Shapley Optical Survey (SOS)…

We present recent results on the evolution of the colour-magnitude relation and of the star formation activity in galaxy clusters since z~0.8. Results are based on the ESO Distant Cluster Survey (EDisCS) - an ESO large programme aimed at…

天体物理学 · 物理学 2008-04-11 Gabriella De Lucia , Bianca M. Poggianti

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.…

天体物理学 · 物理学 2009-11-10 Masayuki Tanaka , Tomotsugu Goto , Sadanori Okamura , Kazuhiro Shimasaku , Jon Brinkman
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