White dwarfs in globular clusters: a search in M71.
Abstract
The inner 6arcmin×4arcmin of the globular cluster M71 was imaged in U, B, and V at CFHT. Stars fainter than 25th magnitude are recorded in all 3 colours. A sequence of faint blue stars was detected, but it is somewhat fainter than expected for DA white dwarfs. Also seen is a sequence of very blue objects which are much too luminous to be single white dwarfs. Their colours and magnitudes are consistent with their identification as cluster cataclysmic variables.
- Publication:
-
European Southern Observatory Conference and Workshop Proceedings
- Pub Date:
- 1987
- Bibcode:
- 1987ESOC...27..299R
- Keywords:
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- C-M Diagrams:Globular Clusters;
- Globular Clusters:C-M Diagrams;
- Globular Clusters:UBV Photometry;
- Globular Clusters:White Dwarfs;
- UBV Photometry:Globular Clusters;
- White Dwarfs:Globular Clusters