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zCOSMOS: A Large VLT/VIMOS Redshift Survey Covering 0 &lt;<i>z</i>&lt; 3 in the COSMOS Field

S. J. LillyInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandO. Le FèvreLaboratoire d’Astrophysique de Marseille, FranceA. RenziniDipartimento di Astronomia, Universita di Padova, Padova, ItalyG. ZamoraniINAF Osservatorio Astronomico di Bologna, Bologna, ItalyM. ScodeggioINAF-IASF Milano, Milan, ItalyT. ContiniLaboratoire d’Astrophysique de l’Observatoire Midi-Pyrénées, Toulouse, FranceC. M. CarolloInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandG. HasingerMax Planck Institut für Extraterrestrische Physik, Garching, GermanyJean‐Paul KneibLaboratoire d’Astrophysique de Marseille, FranceA. IovinoINAF Osservatorio Astronomico di Brera, Milan, ItalyV. Le BrunLaboratoire d’Astrophysique de Marseille, FranceC. MaierInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandV. MainieriMax Planck Institut für Extraterrestrische Physik, Garching, GermanyM. MignoliINAF Osservatorio Astronomico di Bologna, Bologna, ItalyJ. SilvermanMax Planck Institut für Extraterrestrische Physik, Garching, GermanyL. A. M. TascaLaboratoire d’Astrophysique de Marseille, FranceM. BolzonellaINAF Osservatorio Astronomico di Bologna, Bologna, ItalyA. BongiornoINAF Osservatorio Astronomico di Bologna, Bologna, ItalyD. BottiniINAF-IASF Milano, Milan, ItalyP. CapakCalifornia Institute of Technology, Pasadena, CAK. I. CaputiInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandA. CimattiINAF Osservatorio Astrofisico di Arcetri, Florence, ItalyO. CucciatiINAF Osservatorio Astronomico di Brera, Milan, ItalyE. DaddiCommissariat à l'Énergie Atomique et aux Énergies AlternativesRobert FeldmannInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandP. FranzettiINAF-IASF Milano, Milan, ItalyB. GarilliINAF-IASF Milano, Milan, ItalyL. GuzzoINAF Osservatorio Astronomico di Brera, Milan, ItalyO. IlbertINAF Osservatorio Astronomico di Bologna, Bologna, ItalyP. KampczykInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandK. KovačInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandF. LamareilleLaboratoire d’Astrophysique de l’Observatoire Midi-Pyrénées, Toulouse, FranceA. LeauthaudLaboratoire d’Astrophysique de Marseille, FranceJ. F. Le BorgneLaboratoire d’Astrophysique de l’Observatoire Midi-Pyrénées, Toulouse, FranceH. J. McCrackenInstitut d’Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 75014 Paris, France and Observatoire de Paris, LERMA, 75014 Paris, FranceC. MarinoniINAF Osservatorio Astronomico di Brera, Milan, ItalyR. PellóLaboratoire d’Astrophysique de l’Observatoire Midi-Pyrénées, Toulouse, FranceE. RicciardelliDipartimento di Astronomia, Universita di Padova, Padova, ItalyClaudia ScarlataInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandD. VerganiINAF-IASF Milano, Milan, ItalyD. B. SandersInstitute for Astronomy, University of Hawaii, Honololu, HIEva SchinnererMax-Planck-Institut für Astronomie, Heidelberg, GermanyN. Z. ScovilleCalifornia Institute of Technology, Pasadena, CAY. TaniguchiTohoku University, Tokyo, JapanS. ArnoutsInstitut d’Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 75014 Paris, France and Observatoire de Paris, LERMA, 75014 Paris, FranceH. AusselInstitut d’Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 75014 Paris, France and Observatoire de Paris, LERMA, 75014 Paris, FranceS. BardelliINAF Osservatorio Astronomico di Bologna, Bologna, ItalyM. BrusaMax Planck Institut für Extraterrestrische Physik, Garching, GermanyA. CappiINAF Osservatorio Astronomico di Bologna, Bologna, ItalyP. CiliegiINAF Osservatorio Astronomico di Bologna, Bologna, ItalyA. FinoguenovMax Planck Institut für Extraterrestrische Physik, Garching, GermanyS. FoucaudNottingham University, United KingdomRoberto FranceschiniInstitute for Astronomy, University of Hawaii, Honololu, HIC. HallidayINAF Osservatorio Astrofisico di Arcetri, Florence, ItalyC. ImpeyUniversity of Arizona, Tucson, AZC. KnobelInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandA. M. KoekemoerSpace Telescope Science Institute, Baltimore, MDJ. D. KurkINAF Osservatorio Astrofisico di Arcetri, Florence, ItalyD. MaccagniINAF-IASF Milano, Milan, ItalyS. MaddoxNottingham University, United KingdomB. MaranoG. MarconiEuropean Southern Observatory, Garching, GermanyB. MeneuxINAF Osservatorio Astronomico di Brera, Milan, ItalyB. MobasherSpace Telescope Science Institute, Baltimore, MDC. MoreauLaboratoire d’Astrophysique de Marseille, FranceJ. A. PeacockUniversity of Edinburgh, United KingdomC. PorcianiInstitute of Astronomy, Department of Physics, Eidgenössische Technische Hochschule, ETH Zurich, CH-8093, SwitzerlandL. PozzettiINAF Osservatorio Astronomico di Bologna, Bologna, ItalyR. ScaramellaINAF, Rome, ItalyDavid SchiminovichColumbia University, New York, NYP. L. ShopbellCalifornia Institute of Technology, Pasadena, CAIan SmailInstitute for Computational Cosmology, Durham University, Durham, United KingdomD. J. ThompsonCalifornia Institute of Technology, Pasadena, CAL. TresseLaboratoire d’Astrophysique de Marseille, FranceG. VettolaniIRA-INAF, Bologna, ItalyA. ZanichelliIRA-INAF, Bologna, ItalyE. ZuccaINAF Osservatorio Astronomico di Bologna, Bologna, Italy
2007en
ABI

Аннотация

zCOSMOS is a large-redshift survey that is being undertaken in the COSMOS field using 600 hr of observation&#13;\nwith the VIMOS spectrograph on the 8 m VLT. The survey is designed to characterize the environments of COSMOS&#13;\ngalaxies from the 100 kpc scales of galaxy groups up to the 100 Mpc scale of the cosmic web and to produce diagnostic&#13;\ninformation on galaxies and active galactic nuclei. The zCOSMOS survey consists of two parts: (1) zCOSMOSbright,&#13;\na magnitude-limited I-band I_(AB) &lt; 22.5 sample of about 20,000 galaxies with 0.1 &lt; z &lt; 1.2 covering the whole&#13;\n1.7 deg^2 COSMOS ACS field, for which the survey parameters at z ~ 0.7 are designed to be directly comparable to&#13;\nthose of the 2dFGRS at z ~ 0.1; and (2) zCOSMOS-deep, a survey of approximately 10,000 galaxies selected through&#13;\ncolor-selection criteria to have 1.4 &lt; z &lt; 3.0, within the central 1 deg^2. This paper describes the survey design and the&#13;\nconstruction of the target catalogs and briefly outlines the observational program and the data pipeline. In the first&#13;\nobserving season, spectra of 1303 zCOSMOS-bright targets and 977 zCOSMOS-deep targets have been obtained.&#13;\nThese are briefly analyzed to demonstrate the characteristics that may be expected from zCOSMOS, and particularly&#13;\nzCOSMOS-bright, when it is finally completed between 2008 and 2009. The power of combining spectroscopic and&#13;\nphotometric redshifts is demonstrated, especially in correctly identifying the emission line in single-line spectra and in&#13;\ndetermining which of the less reliable spectroscopic redshifts are correct and which are incorrect. These techniques&#13;\nbring the overall success rate in the zCOSMOS-bright so far to almost 90% and to above 97% in the 0.5 &lt; z &lt; 0.8&#13;\nredshift range. Our zCOSMOS-deep spectra demonstrate the power of our selection techniques to isolate high-redshift&#13;\ngalaxies at 1.4 &lt; z &lt; 3.0 and of VIMOS to measure their redshifts using ultraviolet absorption lines.

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DOI
10.1086/516589

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