Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...210....1h&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 210, no. 1-2, Feb. 1989, p. 1-17.
Astronomy and Astrophysics
Astrophysics
36
Galaxies, H Lines, Virgo Galactic Cluster, Brightness Distribution, Correlation Coefficients, Hydrogen, Luminosity, Morphology, Star Formation
Scientific paper
Global parameters are derived for a sample of 252 galaxies of type Sa or later situated in the Virgo cluster area. The influence of the high-density environment is investigated by comparing global parameters with a sample of nearby galaxies representing the noncluster environment. A deficiency of H I content is found when the mass of neutral hydrogen is correlated with other global parameters. Brighter galaxies seem to be more deficient in H I than fainter ones, and early-type galaxies are far more deficient than late-type ones. While these results are compatible with the notion that ram pressure sweeping is the physical mechanism for the removal of H I, they present the question of whether late-type galaxies predominantly avoid the central region of the Virgo cluster or whether H I removal lead to conversion to earlier morphological types.
Huchtmeier Walter K.
Richter Otto-Georg
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