Hubble Space Telescope detection of spiral structure in two Coma Cluster dwarf galaxies

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Title: Hubble Space Telescope detection of spiral structure in two Coma Cluster dwarf galaxies
Author(s): Graham, Alister W.; Jerjen, Helmut; Guzman, Rafael
Abstract: We report the discovery of spiral-like structure in Hubble Space Telescope images of two dwarf galaxies (GMP 3292 and GMP 3629) belonging to the Coma Cluster. GMP 3629 is the faintest such galaxy detected in a cluster environment, and it is the first such galaxy observed in the dense Coma Cluster. The large bulge and the faintness of the broad spiral-like pattern in GMP 3629 suggest that its disk may have been largely depleted. We may therefore have found an example of the 'missing link' in theories of galaxy evolution that have predicted that dwarf spiral galaxies, particularly in clusters, evolve into dwarf elliptical galaxies.
Publication type: Journal article
Source: Astronomical Journal, Vol. 126, no. 4 (October 2003), p. 1787-1793
Publication year: 2003
Keyword(s): cD; Dwarf galaxies; Elliptical and lenticular galaxies; Galaxies; Galaxy formation; Galaxy structure; GMP 3292; GMP 3629; Spiral galaxies
Publisher: University of Chicago Press
ISSN: 0004-6256
Publisher URL: http://dx.doi.org/10.1086/378166
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