The Evolution of the Star Formation Activity in Galaxies and Its Dependence on Environment
Bianca M. PoggiantiINAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, Padova I-35122, ItalyAnja von der LindenMax-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, Postfach 1317, Garching D-85741, GermanyG. De LuciaMax-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Strasse 1, Postfach 1317, Garching D-85741, GermanyVandana DesaiAstronomy Department, University of Washington, Box 351580, Seattle, WA 98195Luc SimardHerzberg Institute of Astrophysics, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, CanadaClaire HallidayAlfonso Aragón-SalamancaSchool of Physics and Astrophysics, University of Nottingham, University Park, Nottingham NG7 2RD, UKR. G. BowerDepartment of Physics, University of Durham, South Road, DH1 3LE Durham, UKJ. VarelaINAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, Padova I-35122, ItalyP. N. BestUK Astronomy Technology CentreDouglas CloweSteward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721Julianne J. DalcantonAstronomy Department, University of Washington, Box 351580, Seattle, WA 98195P. JablonkaGalaxies, Etoiles, Physique et InstrumentationB. Milvang‐JensenMax-Planck-Institut fur extraterrestrische Physik, Giessenbachstrasse Postfach 1312, Garching D-85748, GermanyR. PellóLaboratoire d’Astrophysique, UMR 5572, Observatoire Midi-Pyrenees, 14 Avenue Edouard Belin, Toulouse F-31400, FranceGregory RudnickSteward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721R. P. SagliaMax-Planck-Institut fur extraterrestrische Physik, Giessenbachstrasse Postfach 1312, Garching D-85748, GermanySimon D. M. WhiteAstronomy Department, University of Washington, Box 351580, Seattle, WA 98195Dennis ZaritskySteward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721
2006en
ABI
Annotatsiya
ApJ, in press We study how the proportion of star-forming galaxies evolves between z = 0.8 and z = 0 as a function of galaxy environment, using the [OII] line in emission as a signature of ongoing star formation. Our high-z dataset comprises 16 clusters, 10 groups and another 250 galaxies in poorer groups and the field at z = 0.4 − 0.8 from the ESO Distant Cluster Survey, plus another 9 massive clusters at similar redshifts. As a local comparison, we use samples of galaxy systems selected from the Sloan Digital Sky Survey at 0.04 < z < 0.08. At highz most systems follow a broad anticorrelation between the fraction of star-forming galaxies and the system
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