University Of Tasmania

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The HIPASS catalogue - II. Completeness, reliability and parameter accuracy

journal contribution
posted on 2023-05-16, 19:46 authored by Zwaan, MA, Meyer, MJ, Webster, RL, Staveley-Smith, L, Drinkwater, MJ, Barnes, DG, Bhathal, R, de Blok, WJG, Disney, MJ, Ekers, RD, Freeman, KC, Garcia, DA, Gibson, BK, Harnett, J, Henning, PA, Howlett, M, Jerjen, H, Kesteven, MJ, Kilborn, VA, Knezek, PM, Koribalski, BS, Mader, S, Marquarding, M, Minchin, RF, O'Brien, J, Oosterloo, T, Pierce, MJ, Price, RM, Putman, ME, Ryan-Weber, E, Ryder, SD, Sadler, EM, Stevens, JB, Stewart, IM, Stootman, F, Waugh, M, Wright, AE
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.


Publication title

Monthly Notices of the Royal Astronomical Society










School of Natural Sciences


Blackwell Publishing

Place of publication

Oxford, England

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the physical sciences

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