Abstract
The H I Parkes All Sky Survey (HIPASS) is a blind extragalactic HI 21 -cm emission-line survey covering the whole southern sky from declination -90° to +25°. The HTPASS catalogue (HICAT), containing 4315 H I-selected galaxies from the region south of declination +2°, is presented in Meyer et al. (Paper I). This paper describes in detail the completeness and reliability of HICAT, which are calculated from the recovery rate of synthetic sources and follow-up observations, respectively. HICAT is found to be 99 per cent complete at a peak flux of 84 mJy and an integrated flux of 9.4 Jy km s-1. The overall reliability is 95 per cent, but rises to 99 per cent for sources with peak fluxes >58 mJy or integrated flux >8.2 Jy km s-1. Expressions are derived for the uncertainties on the most important HICAT parameters: peak flux, integrated flux, velocity width and recessional velocity. The errors on HICAT parameters are dominated by the noise in the HIPASS data, rather than by the parametrization procedure.
| Original language | English |
|---|---|
| Pages (from-to) | 1210-1219 |
| Number of pages | 10 |
| Journal | Monthly Notices of the Royal Astronomical Society |
| Volume | 350 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jun 2004 |
| Externally published | Yes |
Keywords
- Galaxies: statistics
- Methods: observational
- Methods: statistical
- Radio lines: galaxies
- Surveys
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