Next Section: Introduction

21-cm Searches for Dim Galaxies

Mike Disney & Gareth Banks
University of Wales College of Cardiff
PO Box 913, Cardiff. CF2 5YB
mjd@astro.cf.ac.uk & gdb@astro.cf.ac.uk
Australia Telescope National Facility
CSIRO, Epping 2121, Australia
gbanks@atnf.csiro.au

Abstract:

We review very strong selection effects which operate against the detection of dim (i.e. Low Surface Brightness) galaxies. The Multibeam instrument offers a wonderful opportunity to turn up new populations of such galaxies. However, to explore the newly accessible parameter space, it will be necessary to survey both a Very Deep Patch ( sec/pointing, limiting ) and a Deep Patch ( sec/pointing, limiting ) in carefully selected areas, and we outline the case to do this.

Keywords: galaxies: general - galaxies: luminosity function, mass function
galaxies: statistics

© Copyright Astronomical Society of Australia 1997