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Light variations of the population II F-type supergiant HD 46703Photometric monitoring has revealed brightness variations of 0.1 m on a time scale of weeks for HD 46703, a metal-deficient F-type field analog of the stars lying above the horizontal branch in globular clusters. It is suggested that HD 46703 belongs to the '89 Her' class of luminous F-type variables. Since HD 46703 is unquestionably a halo object, it is almost certainly a low-mass star. It is suggested that it, and probably the other 89 Her variables, are masquerading as supergiants during their final evolution off the asymptotic giant branch.
Document ID
19840043398
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Bond, H. E.
Carney, B. W.
Grauer, A. D.
Date Acquired
August 12, 2013
Publication Date
February 1, 1984
Publication Information
Publication: Astronomical Society of the Pacific, Publications
Volume: 96
ISSN: 0004-6280
Subject Category
ASTRONOMY
Report/Patent Number
AFOSR-TR-84-0408
AD-A141585
Funding Number(s)
CONTRACT_GRANT: NSF AST-80-23232
CONTRACT_GRANT: NSF AST-82-15497
CONTRACT_GRANT: NSF AST-82-11905
CONTRACT_GRANT: AF-AFOSR-82-0192
Distribution Limits
Public
Copyright
Other