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Finding the Bivariate Brightness Distribution of Galaxies from an HI Selected Sample

Published online by Cambridge University Press:  05 March 2013

R. F. Minchin
R. F. Minchin*
Affiliation:
University of Wales, Cardiff, PO Box 913, Cardiff, CF2 5YB, UK; [email protected] Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 2121, Australia; [email protected]
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Abstract

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A method is presented that will enable the bivariate luminosity/surface brightness distribution of galaxies to be determined from a relatively small HI selected sample. This will be taken from the HI Parkes All Sky Survey (HIPASS). The advantages of using an HI sample in order to avoid the selection effects that are present at optical wavelengths are discussed. We are developing an algorithm to automatically extract a uniform sample of galaxies from the HIPASS data cubes and to determine the parameters of these galaxies. We have so far conducted tests involving both simulated sources injected into cubes with real noise and data from the Multibeam Deep survey. Results from these tests are encouraging.

Keywords

galaxies: generalgalaxies: luminosity function, mass functiongalaxies: photometryradio lines: galaxies
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 16 , Issue 1 , 1999 , pp. 12 - 17
Copyright
Copyright © Astronomical Society of Australia 1999

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