21 CM SEARCHES FOR DIM GALAXIES

Authors
DISNEY M BANKS G
Citation
M. Disney et G. Banks, 21 CM SEARCHES FOR DIM GALAXIES, Publications of the Astronomical Society of Australia, 14(1), 1997, pp. 69-72
Citations number
28
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Publications of the Astronomical Society of Australia → ACNP
ISSN journal
13233580
Volume
14
Issue
1
Year of publication
1997
Pages
69 - 72
Database
ISI
SICI code
1323-3580(1997)14:1<69:2CSFDG>2.0.ZU;2-K
Abstract
We review very strong selection effects which operate against the dete ction of dim (i.e. low surface brightness) galaxies. The Parkes multib eam instrument offers a wonderful opportunity to turn up new populatio ns of such galaxies. However, to explore the newly accessible paramete r space, it will be necessary to survey both a very deep patch (10(5) s/pointing, limiting N-HI similar to 10(18) Cm-2) and a deep patch (10 (4) s/pointing, limiting N-HI N similar to 3 x 10(18) Cm-2) in careful ly selected areas, and we outline the case to do this.