publication . Article . Other literature type . Preprint . 2009

Evolution of the early-type galaxy fraction in clusters since z = 0.8

Luc Simard; Douglas Clowe; Vandana Desai; Julianne J. Dalcanton; Anja von der Linden; Bianca M. Poggianti; Simon D. M. White; Alfonso Aragón-Salamanca; Gabriella De Lucia; Claire Halliday; ...
Open Access Danish
  • Published: 15 Oct 2009
Abstract
We study the morphological content of a large sample of high-redshift clusters to determine its dependence on cluster mass and redshift. Quantitative morphologies are based on bulge+disk decompositions of cluster and field galaxies on deep VLT/FORS2 images of 18 optically-selected clusters at 0.45 < z < 0.80 from the ESO Distant Cluster Survey (EDisCS). Morphological content is given by the early-type galaxy fraction f_et, and early-type galaxies are selected based on their bulge fraction and image smoothness. A set of 158 SDSS clusters is analyzed exactly as the EDisCS sample to provide a robust local comparison. Our main results are: (1) f_et values for ...
Subjects
arXiv: Astrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy Astrophysics
free text keywords: Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, Space and Planetary Science, Astronomy and Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, galaxies: fundamental parameters, galaxies: evolution, galaxies: clusters: general, Sigma, Physics, Astrophysics, Star formation, Fraction (mathematics), Bulge, Redshift, Galaxy, Early type, Cluster (physics)
Communities
  • NEANIAS Space Research Community
Funded by
EC| STGDELUCIA2007
Project
STGDELUCIA2007
Galaxies through the cosmic ages: the role of primordial conditions and environmental effects
  • Funder: European Commission (EC)
  • Project Code: 202781
  • Funding stream: FP7 | SP2 | ERC
Validated by funder
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