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Hubble Space Telescope detection of Spiral Structure in Two Coma Cluster Dwarf Galaxies

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Date

2003

Authors

Graham, John A
Jerjen, Helmut
Guzman, Rafael

Journal Title

Journal ISSN

Volume Title

Publisher

University of Chicago Press

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.

Description

Keywords

Keywords: Galaxies: dwarf; Galaxies: elliptical and lenticular, cD; Galaxies: formation; Galaxies: individual (GMP 3292, GMP 3629); Galaxies: spiral; Galaxies: structure

Citation

URI

http://hdl.handle.net/1885/86554

Collections

ANU Research Publications

Source

Astronomical Journal

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1086/378166

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