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Luminosity-velocity diagrams for Virgo Cluster spirals. I - Inner rotation curvesOptical rotation curves are presented for the innermost portions of nine spiral galaxies in the Virgo Cluster. The emission-line (H-alpha and forbidden N II) velocity data are to be used in combination with new CCD photometry to construct luminosity-velocity diagrams, in a continuing investigation of an apparent initial linear branch and its potential as a distance indicator. Compared to recent H I data, the present optical rotation curves generally show systematically steeper inner gradients. This effect is ascribed to the poorer resolution of the H I data and/or to holes in the gas distribution.
Document ID
19900043855
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Woods, David
(British Columbia Univ. Vancouver British Columbia, Canada)
Fahlman, Gregory G.
(British Columbia, University Vancouver, Canada)
Madore, Barry F.
(California Institute of Technology Pasadena, United States)
Date Acquired
August 14, 2013
Publication Date
April 10, 1990
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 353
ISSN: 0004-637X
Subject Category
Astrophysics
Distribution Limits
Public
Copyright
Other
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