Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...343...94s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 343, Aug. 1, 1989, p. 94-106.
Astronomy and Astrophysics
Astronomy
81
Galactic Clusters, H I Regions, Hydrogen, Intergalactic Media, Sky Surveys (Astronomy), Dwarf Galaxies, Interacting Galaxies, Irregular Galaxies, Red Shift, Spiral Galaxies
Scientific paper
The M96 group is examined at 21 cm to study the galaxies' neutral hydrogen content and to search for evidence of interactions that might help explain the origin of the large intergalactic H I feature found there. M96, an Sab spiral, has 90 percent of its H I concentrated outside of the central bright optical disk - possibly captured intergalactic gas. The ringlike distribution of the intergalactic gas may be shaped by interactions with M96. An extremely faint dwarf irregular galaxy was also found. Questions about the distance and membership of the M96 group are addressed. It is shown that many previous group catalogs must be in error. A mass-to-light ratio of less than 30 is found for the M96 group. A number of previous estimates are inflated by inclusion of background galaxies.
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