Finding the bivariate brightness distribution of galaxies from an HI selected sample

Details Finding the bivariate brightness distribution of galaxies from an HI selected sample Finding the bivariate brightness distribution of galaxies from an HI selected sample

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pasa...16...12m&link_type=abstract

Publications Astronomical Society of Australia, vol. 16, no. 1, p. 12-17

Astronomy and Astrophysics

Astronomy

4

Galaxy Luminosity Function, Photometry, Radio Lines

Scientific paper

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 are encouraging.

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