Early-type Galaxies in Isolation: an HI Perspective with ATLAS 3D

Details Early-type Galaxies in Isolation: an HI Perspective with ATLAS 3D Early-type Galaxies in Isolation: an HI Perspective with ATLAS 3D

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aspc..421...49s&link_type=abstract

Galaxies in Isolation: Exploring Nature Versus Nurture, proceedings of a conference held 12 to 15 May 2009 in Granada, Spain. Ed

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present preliminary results of our HI WSRT observations of early-type galaxies in the ATLAS3D sample. We discuss the dependence of HI properties on environment. We detect HI in about half of the galaxies outside the Virgo cluster. The HI morphology/kinematics changes as a function of environment, going from regular, rotating systems around “isolated” galaxies to progressively more disturbed structures for galaxies with neighbours or in groups. In denser environment, inside Virgo, nearly none of the galaxies contains HI.

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