NOIRCAT -- the Northern HIPASS Optical/IR Catalogue

O. I. Wong, R.L. Webster, V.A. Kilborn, M. Waugh, L. Staveley-Smith

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    We present the Northern HIPASS (H i Parkes All-Sky Survey) Optical/Infrared Catalogue (NOIRCAT), an optical/near-infrared (NIR) counterpart to the Northern HIPASS Catalogue (NHICAT). Of the 1002 sources in NHICAT, 655 (66 per cent) have optical counterparts with matching optical velocities. A further 85 (8 per cent) sources have optical counterparts with matching velocities from previous radio emission-line surveys. We find a correlation between the gas and stellar content of the NOIRCAT sources. Our H i-selected sample of isolated galaxies also presents a wider range in NIR colours than previous optically selected studies of regular, isolated galaxies. All H i detections in optically unobscured fields could be matched with either a NASA/IPAC Extragalactic Database optical counterpart, or a galaxy visible in Second Palomar Observatory Sky Survey or Digitized Sky Survey images. However, as over 200 of these matched galaxies have no velocity information, further follow-up observations are needed to confirm the matches, and hence confirm or deny the existence of dark galaxies in this data set.
    Original languageEnglish
    Pages (from-to)2264-2278
    JournalMonthly Notices of the Royal Astronomical Society
    Volume399
    Issue number4
    DOIs
    Publication statusPublished - 2 Nov 2009

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