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Studying the evolution of large-scale structure with the VIMOS-VLT Deep Survey | | L. Guzzo
; O. Le Fevre
; B. Meneux
; A. Pollo
; C. Marinoni
; A. Cappi
; O. Cucciati
; B. Garilli
; A. Iovino
; H.J. McCracken
; D. Bottini
; V. Le Brun
; D. Maccagni
; J.P. Picat
; R. Scaramella
; M. Scodeggio
; L. Tresse
; G. Vettolani
; A. Zanichelli
; | | Date: |
9 Jan 2007 | | Abstract: | The VIMOS-VLT Deep Survey (VVDS) currently offers a unique combination of depth, angular size and number of measured galaxies among surveys of the distant Universe: ~ 11,000 spectra over 0.5 deg2 to I_{AB}=24 (VVDS-Deep), 35,000 spectra over ~ 7 deg2 to I_{AB}=22.5 (VVDS-Wide). The current ``First Epoch’’ data from VVDS-Deep already allow investigations of galaxy clustering and its dependence on galaxy properties to be extended to redshifts ~1.2-1.5, in addition to measuring accurately evolution in the properties of galaxies up to z~4. This paper concentrates on the main results obtained so far on galaxy clustering. Overall, L* galaxies at z~ 1.5 show a correlation length r_0=3.6pm 0.7. As a consequence, the linear galaxy bias at fixed luminosity rises over the same range from the value b~1 measured locally, to b=1.5 +/- 0.1. The interplay of galaxy and structure evolution in producing this observation is discussed in some detail. Galaxy clustering is found to depend on galaxy luminosity also at z~ 1, but luminous galaxies at this redshift show a significantly steeper small-scale correlation function than their z=0 counterparts. Finally, red galaxies remain more clustered than blue galaxies out to similar redshifts, with a nearly constant relative bias among the two classes, b_{rel}~1.4, despite the rather dramatic evolution of the color-density relation over the same redshift range. | | Source: | arXiv, astro-ph/0701273 | | Services: | Forum | Review | PDF | Favorites | |
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