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Observations of Wide Binary Pairs in the Far Southern Sky

Published online by Cambridge University Press:  25 April 2016

Christina Bauer ,
Graeme L. White  and
Alex Hons
Christina Bauer
Affiliation:
University of Western Sydney, Nepean, PO Box 10, Kingswood, NSW 2747
Graeme L. White
Affiliation:
University of Western Sydney, Nepean, PO Box 10, Kingswood, NSW 2747
Alex Hons
Affiliation:
University of Western Sydney, Nepean, PO Box 10, Kingswood, NSW 2747
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Abstract

Astrometric CCD observations have been made of wide (~3 to 80 arcsec) southern binary pairs using the 0·6 m telescope at MSSSO. Separations ρ and position angles (PA) have been calibrated against known astrometrie pairs, and have rms uncertainties of 0·16 arcsec and 7·8/ρ degrees (ρ in arcsec) respectively. These stars have not been well studied; typically they have not been measured since approximately 1930, and 52% of them have been observed only once prior to our observations. A comparison has been made with values published in the Washington Double Star (WDS) catalogue. Of the 304 pairs measured in the declination range −60° to −70°, 82% show no evidence of motion since the last observation.

Type
Galactic and Stellar
Information
Publications of the Astronomical Society of Australia , Volume 11 , Issue 2 , August 1994 , pp. 201 - 205
Copyright
Copyright © Astronomical Society of Australia 1994

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