The HI Mass Function from HIPASS

V. Kilborn ,
R. L. Webster ,
L. Staveley-Smith ,
, PASA, 16 (1), 8
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Next Section: Introduction
Contents Page: Volume 16, Number 1

The HI Mass Function from HIPASS

V. Kilborn 1 -
R. L. Webster 2 - L. Staveley-Smith 3 -

1 The University of Melbourne, School of Physics, Parkville, Victoria, 3052, Australia,
vkilborn@physics.unimelb.edu.au

2 The University of Melbourne, School of Physics, Parkville, Victoria, 3052, Australia,
rwebster@physics.unimelb.edu.au

3 Australia Telescope National Facility, CSIRO, P.O. Box 76, Epping, NSW 2121, Australia,
Lister.Staveley-Smith@atnf.csiro.au

Abstract:

The HI Parkes All Sky Survey (HIPASS) is a blind search for extragalactic neutral hydrogen, covering the whole of the southern sky. We present the latest HI mass function (HIMF) constructed from a sample of 263 galaxies with declinations $<-62^{\circ}$. Standard

$\sum 1 / V_{\rm max}$ and maximum likelihood techniques are used in the analysis. No upturn in the low-mass end of the HIMF is yet seen, though our selection procedure presently conspires against the lowest-mass galaxies.

Keywords: galaxies: mass function - radio lines: galaxies - surveys





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