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Identifications from the Parkes-MIT-NRAO Surveys

Published online by Cambridge University Press:  25 April 2016

Niven J. Tasker ,
Alan E. Wright ,
David McConnell ,
Ann Savage ,
Michael J. Kesteven ,
Euan Troup  and
Mark Griffith
Niven J. Tasker
Affiliation:
School of Mathematics, Physics, Computing and Electronics, Macquarie University, NSW 2109
Alan E. Wright
Affiliation:
Australia Telescope National Facility, CSIRO, PO Box 276, Parkes NSW 2870
David McConnell
Affiliation:
Australia Telescope National Facility, CSIRO, PO Box 94, Narrabri NSW 2390
Ann Savage
Affiliation:
Anglo-Australian Observatory, Coonabarabran NSW 2357
Michael J. Kesteven
Affiliation:
Australia Telescope National Facility, CSIRO, PO Box 94, Narrabri NSW 2390
Euan Troup
Affiliation:
Australia Telescope National Facility, CSIRO, PO Box 276, Parkes NSW 2870
Mark Griffith
Affiliation:
Department of Physics, Room 26-335, Massachusetts Institute of Technology, Cambridge MA 02139, USA
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Abstract

The Parkes-MIT-NRAO (PMN) 4.85 GHz continuum radio survey of the southern sky was undertaken in 1990 June and November. This survey was performed on the Parkes 64 m telescope using the NRAO seven-beam receiver. A point-source catalogue of 36,640 radio sources has been produced for the Southern Survey zone −87.5° ≤δ ≤ −37° and for the Tropical Survey zone −29° ≤δ ≤ −9.5°. The flux limit of this survey varies with declination and is typically about 30 mJy.

We have begun to cross-correlate the PMN data with sources contained in catalogues compiled at radio, and other, wavelengths. We have found associations for 96% of the PKSCAT90 2700 MHz database sources, and 95% of the Molonglo 408 MHz Catalogue sources within in the PMN Southern and Tropical Survey zones.

A program to identify the optical counterparts of PMN Southern Survey point sources, S4.85 GHz ≥ 70 mJy, using the COSMOS database, is under way. To facilitate this programme we are improving the positional accuracy of PMN sources with observations made at the Australia Telescope National Facility compact array. We have developed a new “snapshot” mode of observing to process the large number of sources (~ 8000) in our sample. It is possible to obtain accurate positions from three snapshots efficiently with a total integration of < 3 minutes.

Type
Instruments and Basic Astronomy
Information
Publications of the Astronomical Society of Australia , Volume 10 , Issue 4 , 1993 , pp. 320 - 321
Copyright
Copyright © Astronomical Society of Australia 1993

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