HI Properties of Loose Groups

Details HI Properties of Loose Groups HI Properties of Loose Groups

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..tsf.ab002m&link_type=abstract

American Physical Society, Texas Section Fall Meeting, October 4-6, 2001 Fort Worth, Texas Meeting ID: TSF01, abstract #AB.002

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We present results from single-dish 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 find statistically significant differences in some of the global HI properties (mass, rotation curves, presence of intragroup gas) between the 2 samples. These results possibly implicate a more advanced stage of dynamical evolution for the interacting sample.

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