H I properties of dwarf irregular galaxies in the Virgo Cluster

Details H I properties of dwarf irregular galaxies in the Virgo Cluster H I properties of dwarf irregular galaxies in the Virgo Cluster

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...289l..15h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 289, Feb. 15, 1985, p. L15-L18.

Mathematics

Logic

36

Galactic Clusters, Galactic Evolution, Galactic Structure, Interstellar Gas, Virgo Galactic Cluster, Hydrogen, Morphology, Neutral Gases

Scientific paper

A neutral hydrogen survey was carried out at Arecibo on 91 dwarf irregular galaxies, with morphological types Sdm through Im, in and around the direction of the Virgo Cluster. Only nine of these were found to be background galaxies, and 19 remain undetected, i.e., most of the candidate galaxies are indeed members of the Virgo Cluster or Supercluster. The distribution of positions and systemic velocities (compared with large spirals) shows no evidence for mass segregation. The H I depletion for dwarfs in the cluster core is only moderate, no more than for spirals. The magnitude-velocity width correlation is continous from spirls to dwarfs. Satistics on H I masses agree only partially with a simple stochastic star formation model.

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