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A CCD search for faint high-latitude carbon stars: dwarfs among the giants

Published online by Cambridge University Press:  07 August 2017

Paul J. Green ,
Bruce Margon ,
Scott F. Anderson ,
Peter M. Garnavich ,
Kem Cook  and
D. Jack Macconnell
Paul J. Green
Affiliation:
University of Washington
Bruce Margon
Affiliation:
University of Washington
Scott F. Anderson
Affiliation:
University of Washington
Peter M. Garnavich
Affiliation:
University of Washington
Kem Cook
Affiliation:
Lawrence Livermore National Laboratory
D. Jack Macconnell
Affiliation:
Computer Sciences Corp., Astronomy Programs

Abstract

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We are acquiring a large-area sample of faint, high-latitude carbon star candidates for the study of halo dynamics by using an intermediate-band color system with CCDs in efficient survey modes. Except for one odd dwarf carbon (C) star, G77-61, it has long been assumed that these faint C stars are distant giants. However, we recently demonstrated that three more faint C stars are high proper motion objects, and therefore dwarfs. Now we are completing a proper motion survey of known faint high-latitude C stars to search for additional C dwarfs. The CCD and proper motion surveys together will place significant limits on the space density of C stars, be they dwarfs or giants.

Type
Poster Papers
Information
Symposium - International Astronomical Union , Volume 149: The Stellar populations of Galaxies , 1992 , pp. 425
Copyright
Copyright © Kluwer