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Dwarf spheroidal galaxies: Keystones of galaxy evolutionDwarf spheroidal galaxies are the most insignificant extragalactic stellar systems in terms of their visibility, but potentially very significant in terms of their role in the formation and evolution of much more luminous galaxies. We discuss the present observational data and their implications for theories of the formation and evolution of both dwarf and giant galaxies. The putative dark-matter content of these low-surface-brightness systems is of particular interest, as is their chemical evolution. Surveys for new dwarf spheroidals hidden behind the stars of our Galaxy and those which are not bound to giant galaxies may give new clues as to the origins of this unique class of galaxy.
Document ID
19950052356
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Gallagher, John S., III
(University of Wisconsin, Madison, WI United States)
Wyse, Rosemary F. G.
(Johns Hopkins University Baltimore, MD, United States)
Date Acquired
August 16, 2013
Publication Date
December 1, 1994
Publication Information
Publication: Astronomical Society of the Pacific, Publications
Volume: 106
Issue: 706
ISSN: 0004-6280
Subject Category
Astronomy
Accession Number
95A83955
Funding Number(s)
CONTRACT_GRANT: NAS7-1260
CONTRACT_GRANT: NSF AST-90-16266
Distribution Limits
Public
Copyright
Other

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