Astrophysical: Galaxies

  • Publication
    Encounters between spherical galaxies - II. Systems with a dark halo
    We perform N-body simulations of encounters between spherical systems surrounded by a spherical halo. Following a preceding paper with a similar aim, the...
  • Publication
    Enhanced Hα Emission in Early-Type Galaxies Belonging to Compact Groups
    The results of Hα photometry of a sample of early-type galaxies belonging to nearby compact groups are presented. Over 75% of the galaxies in the sample were...
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    Enhanced star formation rates in AGN hosts with respect to inactive galaxies from PEP-Herschel observations
    We compare the average star formation (SF) activity in X-ray selected AGN hosts with a mass-matched control sample of inactive galaxies, including both star...
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    Environment of Seyfert 2 galaxies: the group of galaxies around NGC5252.
    The relatively large neutral hydrogen contents and enhanced density of companion galaxies around Seyfert 2 galaxies suggests that tidal interaction could play a...
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    Environment of the Submillimeter-bright Massive Starburst HFLS3 at z ~ 6.34
    We describe the search for Lyman break galaxies (LBGs) near the submillimeter-bright starburst galaxy HFLS3 at z = 6.34 and a study on the environment of this...
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    Environmental Effects in the Structural Parameters of Galaxies in the Coma Cluster
    We have studied 116 bright galaxies from the Coma Cluster brighter than mr=17 mag. From a quantitative morphological analysis we find that the scales of the...
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    Environmental effects on the bright end of the galaxy luminosity function in galaxy clusters
    Context. The dependence of the luminosity function (LF) of cluster galaxies on the evolutionary state of the parent cluster is still an open question, in...
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    Environments of galaxies in groups within the supercluster-void network
    Context. The majority of all galaxies reside in groups of fewer than 50 member galaxies. These groups are distributed in various large-scale environments from...
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    Environments of nearby quasars in Sloan Digital Sky Survey
    Context: For the first time, spectroscopic galaxy redshift surveys are enabling galaxies to be studied with the nearest quasars. This allows the dependence of...