M.J. Disney , P.J. Boyce , G.D. Banks, R.F. Minchin , A.E. Wright, PASA, 16 (1), 66
The html and gzipped postscript versions of this paper are in preprint form.
To access the final published version, download the pdf file.
| Next Section: Why Go Deep? | Contents Page: Volume 16, Number 1 |
Deep Observations with the Parkes 21-cm Multibeam System
M.J. Disney 1
P.J. Boyce 1
G.D. Banks1
R.F. Minchin 1
A.E. Wright 1
1 University of Wales, Cardiff, P.O. Box 913, Cardiff, U.K, CF2 3YB
mjd@astro.cf.ac.uk, pjb@astro.cf.ac.uk, gdb@astro.cf.ac.uk, spxrfm@astro.cf.ac.uk, spxaew@astro.cf.ac.uk
Abstract:
We report on a preliminary analysis of a 5,600 sec per point survey of 32 square degrees in Centaurus, carried out with the Parkes 13-beam system. The signal-to-noise is found to improve as
for the whole integration. We have detected 102 HI sources between +250 and +12,700 km s-1 either by eye or by using the new galaxy-finding algorithm PICASSO. Over half of these are new HI detections. Around a dozen of these are not associated with catalogued galaxies and, in 2 of these cases, we have not identified an optical counterpart on the Digitized Sky Survey. Arguments are put forward to explain why deep integrations are needed to find low surface brightness objects.
Keywords: galaxies: distances and redshifts -- galaxies: luminosity functions -- galaxies: mass function -- galaxies: statistics
© Copyright Astronomical Society of Australia 1997