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  • ENVIRONMENTAL EFFECTS IN TH...
    KAMPCZYK, P; Lilly, S J; de Ravel, L; Le Fevre, O; Bolzonella, M; Carollo, C M; Diener, C; Knobel, C; Kovac, K; Maier, C

    The Astrophysical journal, 01/2013, Letnik: 762, Številka: 1
    Journal Article

    We analyze the environments and galactic properties (morphologies and star formation histories) of a sample of 153 close kinematic pairs in the redshift range 0.2 < z < 1 identified in the zCOSMOS-bright 10k spectroscopic sample of galaxies. We then examine the morphologies and stellar populations of galaxies in the pairs, comparing them to control samples that are carefully matched in environment so as to remove as much of the well-known effects of environment on the properties of the parent population of galaxies as possible. Once the environment is properly taken into account in this way, we find that the early-late morphology mix is the same as for the parent population, but that the fraction of irregular galaxies is boosted by 50%-75%, with a disproportionate increase in the number of irregular-irregular pairs (factor of 4-8 times), due to the disturbance of disk galaxies.