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Spectrophotometry of Hot White Dwarfs from the Palomar-Green Survey

Published online by Cambridge University Press:  12 April 2016

Richard F. Green  and
James W. Liebert
Richard F. Green
Affiliation:
Hale Observatories, California Institute of Technology
James W. Liebert
Affiliation:
Steward Observatory, University of Arizona

Extract

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The Palomar-Green Survey (1977) contains a list of some 3000 spectroscopically classified stellar objects, chosen on the basis of ultraviolet excess. The survey covers 10,000 square degrees of the sky above |b|=30° with δ≥10° down to an average limiting B=16.2. A significant subset of this sample is a new catalogue of over 700 newly discovered hot degenerates (Green 1979). The combination of selection by color only without regard to motion and the large area covered resulted in the discovery of some rare, luminous degenerates and pre-degenerate objects. We report here on the first observations in a program of more detailed spectroscopic study of these objects, and display representative groups of common spectral or physical properties. These scans at 1.5-2.5 Å resolution were obtained with either the KPNO 2.1-m and intensified image dissector scanner or the Palomar 1.5-m with SIT spectrograph.

Type
Colloquium Session II
Information
International Astronomical Union Colloquium , Volume 53: White Dwarfs and Variable Degenerate Stars , August 1979 , pp. 118 - 124
Copyright
Copyright © The University of Rochester 1979

References

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