Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...146..317g&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 146, no. 2, May 1985, p. 317-324. Research supported by the Consiglio Nazional
Astronomy and Astrophysics
Astrophysics
9
Abundance, Density Distribution, Galactic Clusters, Hydrogen Clouds, Spiral Galaxies, Galactic Structure, Mass To Light Ratios, Spectrum Analysis
Scientific paper
An analysis is conducted of the H I content of about 230 spiral and irregular members of Geller and Huchra's (1983) galaxy groups, in order to shed light on the possible role of the environment on the H I content of noncluster galaxies. Their H I content is noted to depend neither on distance from a respective group center nor on the ratio between this distance and the mean pairwise separation of all group members. No variation of H I properties as a function of group compactness is found, although the overall galaxy density-galaxy morphology relation in groups appears to be largely consistent with the general, local density-morphology relation, in which the most compact groups contain a smaller fraction of spirals. General conditions for ram pressure and turbulent viscous stripping fix an upper limit of about 0.0001 particles/cu cm for the average number density of the intragroup medium.
Giuricin Giuliano
Mardirossian Fabio
Mezzetti Marino
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