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H I properties of dwarf irregular galaxies in the Virgo ClusterA 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.
Document ID
19850044870
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hoffman, G. L.
(Lafayette College Easton, PA, United States)
Helou, G.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Salpeter, E. E.
(Cornell University Ithaca, NY, United States)
Sandage, A.
(Mount Wilson and Las Campanas Observatories Pasadena, CA, United States)
Date Acquired
August 12, 2013
Publication Date
February 15, 1985
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters to the Editor
Volume: 289
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
85A27021
Funding Number(s)
CONTRACT_GRANT: NSF AST-81-16370
Distribution Limits
Public
Copyright
Other

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