منابع مشابه
The 10k Zcosmos: Morphological Transformation of Galaxies in the Group
We study the evolution of galaxies inside and outside of the group environment since z = 1 using a large well defined set of groups and galaxies from the zCOSMOS-bright redshift survey in the COSMOS field. The fraction of galaxies with early-type morphologies increases monotonically with MB luminosity and stellar mass and with cosmic epoch. It is higher in the groups than elsewhere, especially ...
متن کاملThe UZC-SSRS2 Group Catalog
We apply a friends-of-friends algorithm to the combined UZC and SSRS2 redshift surveys to construct a catalog of 1168 groups of galaxies; 411 of these groups have 5 or more members within the redshift survey. The group catalog covers 4.69 steradians and all groups exceed the number density contrast threshold, δρ/ρ = 80. We demonstrate that the groups catalog is homogeneous across the two underl...
متن کاملAn Optical Group Catalogue to Z = 1 from the Zcosmos 10k Sample
We present a galaxy group catalogue spanning the redshift range 0.1 . z . 1 in the ∼ 1.7 deg COSMOS field, based on the first ∼ 10, 000 zCOSMOS spectra. The performance of both the Friendsof-Friends (FOF) and Voronoi-Delaunay-Method (VDM) approaches to group identification has been extensively explored and compared using realistic mock catalogues. We find that the performance improves substanti...
متن کاملA Catalog of Moving Group Candidates in The Solar Neighborhood
Based on kernel estimator and wavelet technique, we have identified 22 moving group candidates in the solar neighborhood from a sample which includes around 14000 dwarfs and 6000 giants. Six of them were previously known as the Hercules stream, the Sirus-UMa stream, the Hyades stream, the Caster group, the Pleiades stream and the IC 2391; five of them have also been reported by other authors. E...
متن کاملK+a galaxies in the zCOSMOS survey*
Aims. The identities of the main processes triggering and quenching star-formation in galaxies remain unclear. A key stage in evolution, however, appears to be represented by post-starburst galaxies. To investigate the prevalence of these galaxies and their impact on galaxy evolution in general, we initiated a multiwavelength study of galaxies with k + a spectral features in the well-studied CO...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2012
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/753/2/121