Hostname: page-component-7c8c6479df-fqc5m Total loading time: 0 Render date: 2024-03-29T14:38:37.968Z Has data issue: false hasContentIssue false

Neutral hydrogen in early-type dwarf galaxies of the Sculptor Group

Published online by Cambridge University Press:  08 November 2005

Antoine Bouchard
Affiliation:
Research School of Astronomy & Astrophysics, Mount Stromlo Observatory, Cotter Road, Weston Creek, ACT 2611, Australia Australia Telescope National Facility, CSIRO, PO Box 76, Epping NSW 1710, Australia
Gary DaCosta
Affiliation:
Research School of Astronomy & Astrophysics, Mount Stromlo Observatory, Cotter Road, Weston Creek, ACT 2611, Australia
Helmut Jerjen
Affiliation:
Research School of Astronomy & Astrophysics, Mount Stromlo Observatory, Cotter Road, Weston Creek, ACT 2611, Australia
Jürgen Ott
Affiliation:
Australia Telescope National Facility, CSIRO, PO Box 76, Epping NSW 1710, Australia
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Dwarf galaxies are at the center of a long debated galaxy evolution puzzle. In the Local Group, there seems to be evidence that the exact morphology of a dwarf is strongly correlated with its environment: late-types (dwarf irregulars, dIrr) are further away from major group members than early-types (dwarf ellipticals and dwarf spheroidals, dE). In general, the early-types, with their smooth ellipsoid light distribution, have no detected interstellar medium (ISM), possess low angular momentum and have low current star formation rates. The late-types have an irregular appearance, large quantities of neutral hydrogen (HI), ongoing star formation and higher angular momentum.

Type
Contributed Papers
Copyright
© 2005 International Astronomical Union