H I observations of blue compact galaxies

Details H I observations of blue compact galaxies H I observations of blue compact galaxies

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981aj.....86..161g&link_type=abstract

Astronomical Journal, vol. 86, Feb. 1981, p. 161-177.

Astronomy and Astrophysics

Astronomy

108

Compact Galaxies, Galactic Radiation, Halos, Hydrogen Clouds, Intergalactic Media, Neutral Gases, Spectrum Analysis, Luminosity, Radio Telescopes, Stellar Evolution, Ultraviolet Radiation

Scientific paper

Neutral hydrogen observations, in the 21-cm line, of 99 compact galaxies from the lists of Zwicky, Haro, and Markarian were made using the 91- and 305-m telescopes. Most were blue or very blue systems, and 72 were detected. The overall global properties of these systems are found to be in approximately the same range as normal late-type galaxies. At one extreme, however, they may extend to types later than Ir I systems. These systems are typically rich in H I gas, and there are indications that they have large H I halos. It is suggested that H I gas infalling from such halos may provide the fuel for intermittent bursts of rapid star formation and may explain the low metallicity found in some blue compacts.

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