Journal
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS
Volume 34, Issue 12, Pages 832-838Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1063773708120037
Keywords
dwarf galaxies; galaxy evolution; interstellar gas in galaxies
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Funding
- Russian Foundation for Basic Research [07-02-00005, 08-02-00627, 06-02-04017]
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We present the coordinates, apparent magnitudes, and morphological types for 230 galaxies presumably identified with HIPASS (HI Parkes All-Sky Survey) sources. The new optical counterparts of the HIPASS sources follow the well-known statistical relationships between the hydrogen mass, luminosity, and type of galaxies. Low-surface-brightness galaxies constitute a significant fraction among these objects. The median value of the hydrogen mass-to-luminosity ratio for them is a factor of 2 or 3 higher than that for bright HIPASS galaxies, reaching 1.7M (Theta)/L-Theta. A number of our objects are located near the boundary log(M (HI)/L (B) ) = 0.2(M (B) + 20) that defines the zone of gravitational stability of disk galaxies against large-scale star formation.
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