2004/05/20 by M. A. Zwaan, M. J. Meyer, M. Meyer +37 · 5 citations
Decision Sciences · Engineering · Mathematics · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy #Astrophysics #Completeness (order theory) #Declination #Flux (metallurgy) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Mathematics #Noise (video) #Physics #Scientific Measurement and Uncertainty Evaluation #Sky #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2004.07782.x
published as Mon.Not.Roy.Astron.Soc.350:1210,2004 · Accepted for publication in MNRAS. 12 pages, 11 figures. Paper with higher resolution figures can be downloaded from http://hipass.aus-vo.org
openalex publication_date 2004/05/20 · arxiv created 2004/06/17 · arxiv updated 2011/03/10 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
The HI 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 HIPASS catalogue (HICAT), containing 4315 HI-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.