Hi Properties of 15 Loose Groups

Details Hi Properties of 15 Loose Groups Hi Properties of 15 Loose Groups

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.0717m&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #07.17; Bulletin of the American Astronomical Society, Vol. 33, p.1316

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We present results from 21-cm HI line observations of 15 spiral-dominated loose groups of galaxies, made at the Nançay radio observatory. The galaxy groups have been selected to represent 2 different categories: groups showing optical evidence of galaxy interaction (``interacting'' sample), and groups showing no obvious morphological disturbances among their members (``control'' sample). We show that there are statistically significant differences in neutral hydrogen content, rotation speed, and LB between the control sample and the noninteracting members of the other sample. We discuss implications that the interacting sample represents groups which are in a more advanced stage of dynamical evolution.

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