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A Southern Sky Survey of Low Mass Stars and Brown Dwarfs

Published online by Cambridge University Press:  12 April 2016

Andrew D. Thackrah  and
Michael R. S. Hawkins
Andrew D. Thackrah
Affiliation:
Institute for astronomy, University of Edinburgh, Edinburgh, Scotland
Michael R. S. Hawkins
Affiliation:
Royal Observatory, Edinburgh, Scotland

Abstract

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We are conducting a survey of the southern sky to study the properties of the lowest mass stars and the sub-stellar brown dwarf population thought to exist at masses below 0.08 M⊙. The survey makes use of plates from the UK and ESO Schmidt telescopes, using the new SuperCOSMOS plate measuring machine at Edinburgh to provide a catalogue of photographic BRI colours and proper motion measurements. Candidates are selected by extreme R–I colour (> 2.5) to a plate-limited magnitude of I ≈ 19.0 and R ≈ 21.0. The size of the survey is only limited by the progress of the UK Schmidt I band survey and the availability of photometric data for calibration of SuperCOSMOS measurements. It is anticipated that the survey will form part of a multi-colour proper motion database of southern sky objects.

Type
IX. Galactic Structure and Stellar Surveys
Information
International Astronomical Union Colloquium , Volume 148: The Future Utilisation of Schmidt Telescopes , 1995 , pp. 296 - 300
Copyright
Copyright © Astronomical Society of the Pacific 1995

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