First Results from the HI Parkes Southern Zone of Avoidance Survey

Details First Results from the HI Parkes Southern Zone of Avoidance Survey First Results from the HI Parkes Southern Zone of Avoidance Survey

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.5208h&link_type=abstract

American Astronomical Society, 192nd AAS Meeting, #52.08; Bulletin of the American Astronomical Society, Vol. 30, p.891

Astronomy and Astrophysics

Astronomy

Scientific paper

The development of the Parkes 21-cm multibeam receiver allows a rapid mapping of the distribution of optically- obscured HI galaxies behind the southern Milky Way. The survey, expected to be completed by early 1999, will map the Zone of Avoidance (ZOA) between longitudes 212{(deg}) and 36{(deg}) , between latitudes -5{(deg}) and +5{(deg}) , covering the redshift range -1200 to 12700 km/s. The eventual 5-σ sensitivity limit is estimated to be 10 mJy/beam, which should produce a catalog of several thousand previously unknown galaxies. A shallow survey for high peak HI flux density objects has uncovered about 100 galaxies, including many in the heavily-obscured Great Attractor region. The first hidden galaxies discovered through the survey to be mapped with the Australia Telescope Compact Array indicate that low HI column density systems may be common in the final catalog.

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