Препринт

The Vimos VLT Deep Survey

M. ScodeggioINAF IASF – Milano, via Bassini 15, 20133 Milano, Italy e-mail: [email protected]D. VerganiINAF IASF – Milano, via Bassini 15, 20133 Milano, Italy e-mail: [email protected]O. CucciatiINAF – Osservatorio Astronomico di Brera, via Brera 28, 20021 Milan, ItalyA. IovinoINAF – Osservatorio Astronomico di Brera, via Brera 28, 20021 Milan, ItalyP. FranzettiINAF IASF – Milano, via Bassini 15, 20133 Milano, Italy e-mail: [email protected]B. GarilliINAF IASF – Milano, via Bassini 15, 20133 Milano, Italy e-mail: [email protected]Fabrice LamareilleLaboratoire d'Astrophysique de BordeauxM. BolzonellaINAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, ItalyL. PozzettiINAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, ItalyU. AbbasINAF – Osservatorio Astronomico di Torino, 10025 Pino Torinese, ItalyC. MarinoniCentre de Physique Théorique, UMR 6207 CNRS-Université de Provence, 13288 Marseille, FranceT. ContiniLaboratoire d'Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 Av. E. Belin, 31400 France,D. BottiniINAF IASF – Milano, via Bassini 15, 20133 Milano, Italy e-mail: [email protected]V. Le BrunLaboratoire d'Astrophysique de Marseille, UMR 6110 CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, FranceO. Le FèvreLaboratoire d'Astrophysique de Marseille, UMR 6110 CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, FranceD. MaccagniINAF IASF – Milano, via Bassini 15, 20133 Milano, Italy e-mail: [email protected]R. ScaramellaINAF – Osservatorio Astronomico di Roma, via di Frascati 33, 00040, Monte Porzio Catone, ItalyL. TresseLaboratoire d'Astrophysique de Marseille, UMR 6110 CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, FranceG. VettolaniIRA – INAF, via Gobetti 101, 40129 Bologna, ItalyA. ZanichelliIRA – INAF, via Gobetti 101, 40129 Bologna, ItalyC. AdamiLaboratoire d'Astrophysique de Marseille, UMR 6110 CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, FranceS. ArnoutsCanada France Hawaii Telescope corporation, Mamalahoa Hwy, Kamuela, HI-96743, USAS. BardelliINAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, ItalyA. CappiINAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, ItalyS. CharlotInstitut d'Astrophysique de Paris, UMR 7095, 98 bis Bvd Arago, 75014 Paris, FranceP. CiliegiINAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, ItalySylvie FoucaudSchool of Physics & Astronomy, University of Nottingham, University Park, Nottingham, NG72RD, UKI. GavignaudAstrophysical Institute Potsdam, An der Sternwarte 16, 14482 Potsdam, GermanyL. GuzzoINAF – Osservatorio Astronomico di Brera, via Brera 28, 20021 Milan, ItalyO. IlbertInstitute for Astronomy, 2680 Woodlawn Dr., University of Hawaii, Honolulu, Hawaii 96822, USAH. J. McCrackenInstitut d'Astrophysique de Paris, UMR 7095, 98 bis Bvd Arago, 75014 Paris, FranceB. MaranoUniversità di Bologna, Dipartimento di Astronomia, via Ranzani 1, 40127 Bologna, ItalyA. MazureLaboratoire d'Astrophysique de Marseille, UMR 6110 CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, FranceB. MeneuxMax Planck Institut für Extraterrestrische Physik (MPE), Giessenbachstrasse 1, 85748 Garching bei München, GermanyR. MerighiINAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, ItalyS. PaltaniGeneva Observatory, ch. des Maillettes 51, 1290 Sauverny, SwitzerlandR. PellóLaboratoire d'Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 Av. E. Belin, 31400 France,A. PolloAstronomical Observatory of the Jagiellonian University, ul Orla 171, 30-244 Kraków, PolandM. RadovichINAF – Osservatorio Astronomico di Capodimonte, via Moiariello 16, 80131 Napoli, ItalyG. ZamoraniINAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, ItalyE. ZuccaINAF – Osservatorio Astronomico di Bologna, via Ranzani 1, 40127 Bologna, ItalyM. BondiIRA – INAF, via Gobetti 101, 40129 Bologna, ItalyA. BongiornoMax Planck Institut für Extraterrestrische Physik (MPE), Giessenbachstrasse 1, 85748 Garching bei München, GermanyJ. BrinchmannCentro de Astrofísica da Universidade do Porto, Rua das Estrelas, 4150-762 Porto, PortugalSylvain de la TorreLaboratoire d'Astrophysique de Marseille, UMR 6110 CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, FranceL. de RavelLaboratoire d'Astrophysique de Marseille, UMR 6110 CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, FranceL. GregoriniIRA – INAF, via Gobetti 101, 40129 Bologna, ItalyP. MemeoINAF IASF – Milano, via Bassini 15, 20133 Milano, Italy e-mail: [email protected]E. Pérez‐MonteroLaboratoire d'Astrophysique de Toulouse-Tarbes, Université de Toulouse, CNRS, 14 Av. E. Belin, 31400 France,Y. MellierInstitut d'Astrophysique de Paris, UMR 7095, 98 bis Bvd Arago, 75014 Paris, FranceS. TemporinInstitute of Astro- and Particle Physics, Leopold-Franzens-University Innsbruck, Technikerstraße 25, 6020 Innsbruck, AustriaC. J. WalcherLaboratoire d'Astrophysique de Marseille, UMR 6110 CNRS-Université de Provence, BP 8, 13376 Marseille Cedex 12, France

2009en

ABI

Аннотация

Context. Hierarchical models of galaxy formation predict that the properties of a dark matter halo depend on the large-scale environment surrounding the halo. As a result of this correlation, we expect massive haloes to be present in larger number in overdense regions than in underdense ones. Given that a correlation exists between a galaxy stellar mass and the hosting dark matter halo mass, the segregation in dark matter halo mass should then result in a segregation in the distribution of stellar mass in the galaxy population.Aims. In this work we study the distribution of galaxy stellar mass and rest-frame optical color as a function of the large-scale galaxy distribution using the VLT VIMOS Deep Survey sample, in order to verify the presence of segregation in the properties of the galaxy population.Methods. We use VVDS redshift measurements and multi-band photometric data to derive estimates of the stellar mass, rest-frame optical color, and of the large-scale galaxy density, on a scale of approximately 8 Mpc, for a sample of 5619 galaxies in the redshift range .Results. We observe a significant mass and optical color segregation over the whole redshift interval covered by our sample, such that the median value of the mass distribution is larger and the rest-frame optical color is redder in regions of high galaxy density. The amplitude of the mass segregation changes little with redshift, at least in the high stellar mass regime that we can uniformly sample over the redshift interval. The color segregation, instead, decreases significantly for . However, when we consider only galaxies in narrow bins of stellar mass, in order to exclude the effects of stellar mass segregation on galaxy properties, we no longer observe any significant color segregation.

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Идентификаторы

DOI: 10.1051/0004-6361/200810511

Цитирования и источники

Цитирований: 2Использованных источников: 0

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