H I synthesis observations of two low surface brightness dwarf galaxies in Virgo

Details H I synthesis observations of two low surface brightness dwarf galaxies in Virgo H I synthesis observations of two low surface brightness dwarf galaxies in Virgo

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...165...45s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 165, no. 1-2, Sept. 1986, p. 45-52.

Astronomy and Astrophysics

Astrophysics

18

Dwarf Galaxies, Hydrogen, Interferometry, Irregular Galaxies, Virgo Galactic Cluster, Astronomical Photometry, Brightness Distribution, Mass To Light Ratios, Star Formation

Scientific paper

Interferometric H I observations and optical surface photometry of two dwarf irregular galaxies in the Virgo cluster are presented. Measurements of the surface density support the postulate of a requisite H I surface density for massive star formation. Relatively large fractional gas masses and normal H I to optical diameter ratios indicate that neither galaxy shows any evidence of the effects of a cluster environment. The mass-to-light ratio for one of these galaxies is larger than expected for the relationship of M/L with morphological type derived by Faber and Gallagher, but not unusual when compared with other studies of dwarf galaxies.

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