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The HIPASS Bright Galaxy Catalog



The HIPASS Bright Galaxy Catalog

Bärbel Koribalski (ATNF) + HIPASS and ZOA teams

(updated: 21 - January - 2002)




The 1000 Brightest HIPASS Galaxies: The Optical Properties

Jerjen, Koribalski, Warren, Staveley-Smith, Ryder, Ryan-Weber + HIPASS/ZOA teams, in prep.

Abstract. ....

  • The latest statistical results of optical/HI properties for sources in the HIPASS Bright Galaxy Catalog
    (by Bradley Warren and Helmut Jerjen).

    Optical data for 850 HIPASS BGC galaxies were retrieved from LEDA.

    Rejected Entries295Comments
    New Galaxies 87Ryan-Weber et al. 2002
    HI Clouds 4Staveley-Smith et al. 1998,
    Kilborn et al. 2000,
    Koribalski 2000,
    Ryder et al. 2001
    Pairs and Groups of Galaxies 55multiple entries
    No LEDA Info 1ESO174-G?001
    Multiple LEDA Returns
    (interacting galaxies)     		3ESO252-IG001w
    ESO113-IG054:
    ESO221-IG008c

    Some figures (21-1-2002)

  • Deviations between HI and optical positions.

  • Deviations between HI and optical velocities.

  • HI position offset with respect to the optical positions.

  • Histogram of galaxy inclinations.

  • Histogram of galaxy types.

  • Log MHI versus 50% velocity width, w50i, corrected for galaxy inclination. We used 0 < i < 91 degrees (840 sources). The galaxy ESO430-G001 (HIZSS027) has w50 = 257 km/s, which leads to w50i = 962 km/s using i = 15.5 degrees. As the galaxy lies in the Zone-of-Avoidance the inclination is difficult to estimate and probably wrong in this case.
    The lower limit to MHI is well described by 103.8*(w50i)2.

  • Log MHI versus 50% velocity width, w50i, corrected for galaxy inclination. We used 30 < i < 91 degrees (795 sources). The galaxy NGC5128 (Cen A) has w50 = 477 km/s, which leads to w50i = 627 km/s using i = 49.6 degrees. Its HI mass is clearly underestimated as the HI spectrum is strongly affected by HI absorption and a severe baseline ripple.
    The lower limit to MHI is well described by 103.8*(w50i)2.

    bkoribal @ atnf.csiro.au