4.6 Article

The VIMOS VLT Deep Survey -: Public release of 1599 redshifts to IAB≤24 across the Chandra Deep Field South

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ASTRONOMY & ASTROPHYSICS
卷 428, 期 3, 页码 1043-1049

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EDP SCIENCES S A
DOI: 10.1051/0004-6361:20048072

关键词

surveys; galaxies : high-redshift; galaxies : distances and redshifts; cosmology : observations; galaxies : evolution; cosmology : large scale structure of Universe

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This paper presents the VIMOS VLT Deep Survey around the Chandra Deep Field South (CDFS). We have measured 1599 new redshifts with VIMOS on the European Observatory Very Large Telescope-UT3, in an area 21 x 21.6 arcmin(2), including 784 redshifts in the Hubble Space Telescope-Advanced Camera for Surveys GOODS area. 30% of all objects with I-AB = 24 have been observed independently of magnitude, indicating that the sample is purely magnitude limited. We have reached an unprecedented completeness level of 84% in terms of the ratio of secure measurements vs. observed objects, while 95% of all objects have a redshift measurement. A total of 1452 galaxies, 139 stars, 8 QSOs have a redshift identification, 141 of these being unsecure measurements. The redshift distribution down to I-AB = 24 is peaked at a median redshift z = 0.73, with a significant high redshift tail extending up to similar to4. Several high density peaks in the distribution of galaxies are identified. In particular, the strong peak at z = 0.735 contains more than 130 galaxies in a velocity range +/-2000 km s(-1) distributed all across the transverse similar to20 h(-1) Mpc of the survey. We are releasing all redshifts to the community, along with the cross identification with HST-ACS GOODS sources on the CENCOS database environment http://cencosw.oamp.fr.

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