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Session 52 - Source Surveys and CMB Radiation.
Display session, Wednesday, June 10
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^\circ and 36^\circ, between latitudes -5^\circ and +5^\circ, covering the redshift range -1200 to 12700 km/s. The eventual 5-\sigma 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.
Program listing for Wednesday