The VIMOS VLT Deep Survey: Clustering and the Role of Environment in Galaxy Evolution

Details The VIMOS VLT Deep Survey: Clustering and the Role of Environment in Galaxy Evolution The VIMOS VLT Deep Survey: Clustering and the Role of Environment in Galaxy Evolution

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..379..138l&link_type=abstract

Cosmic Frontiers ASP Conference Series, Vol. 379, proceedings of the conference held 31 July-4 August 2006 at Durham University,

Computer Science

1

Scientific paper

We present results from the VIMOS VLT Deep Survey on the influence of large scale structures on the evolution of galaxies. The large volume and 11564 galaxies with measured spectroscopic redshifts in the ``First Epoch'' survey enables to study galaxy evolution as a function of local galaxy density and galaxy luminosity or type. We find that the clustering of galaxies is strongly dependent on galaxy types at all redshifts probed, with early spectral type galaxies always more clustered than late-type or irregular galaxies up to z≃1.5. The more luminous galaxies with M_B ≥ -20 are also more strongly clustered than fainter galaxies at all epochs probed up to z≃1.5. From the 3D galaxy density field computed using spectroscopic redshifts, we find a strong evolution of the color-density relation which flattens out with increasing redshifts, with red and blue galaxies becoming equally likely to be found in high density regions probed by the VVDS. At high redshifts 3 ≤ z ≤ 4, we find that the progenitors of the most massive galaxies are more numerous and concentrating more luminosity density than galaxies previously measured at these epochs.

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