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The HI Parkes Zone of Avoidance Shallow Survey

Published online by Cambridge University Press:  05 March 2013

P. A. Henning ,
L. Staveley-Smith ,
R. C. Kraan-Korteweg  and
E. M. Sadler
P. A. Henning
Affiliation:
Institute for Astrophysics, University of New Mexico, Albuquerque, NM, 87131, USA; [email protected]
L. Staveley-Smith
Affiliation:
Australia Telescope National Facility, CSIRO, PO Box 76, Epping, NSW 1710, Australia; [email protected]
R. C. Kraan-Korteweg
Affiliation:
Departamento de Astronomia, Universidad de Guanajuato, Guanajuato, GTO, CP 36000, Mexico; [email protected]
E. M. Sadler
Affiliation:
School of Physics, University of Sydney, NSW 2006, Australia; [email protected]
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Abstract

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The HI Parkes Zone of Avoidance Survey is a 21 cm blind search with the multibeam receiver on the 64-m radiotelescope, looking for galaxies hidden behind the southern Milky Way. The first, shallow (15 mJy rms) phase of the survey has uncovered 107 galaxies, two-thirds of which were previously unknown. The addition of these galaxies to existing extragalactic catalogues allows the connectivity of a very long, thin filament across the Zone of Avoidance within 3500 km s−1 to become evident. No local, hidden, very massive objects were uncovered. With similar results in the north (the Dwingeloo Obscured Galaxies Survey) our census of the most dynamically important HI-rich nearby galaxies is now complete, at least for those objects whose HI profiles are not totally buried in the Galactic HI signal. Tests are being devised to better quantify this remaining ZOA for blind HI searches. The full survey is ongoing, and is expected to produce a catalogue of thousands of objects when it is finished.

Keywords

zone of avoidancesurveysgalaxies: HIlarge-scale structure of universe
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 16 , Issue 1 , 1999 , pp. 35 - 37
Copyright
Copyright © Astronomical Society of Australia 1999

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