HI mass function from HIPASS

The HI Parkes All Sky Survey (HIPASS) is a blind search for extragalactic n eutral hydrogen, covering the whole of the southern sky. We present the lat est HI mass function (HIMF) constructed from a sample of 263 galaxies with declinations <-62 degrees. Standard Sigma 1/V-max and maximum likelihood te chniques are used in the analysis. No upturn in the low-mass end of the HIM F is yet seen, though our selection procedure presently conspires against t he lowest-mass galaxies.