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Title: The low-mass white dwarf companion to beta Crateris
Authors: Burleigh, M. R.
Barstow, M. A.
Schenker, K. J.
Sills, A. I.
Wynn, G. A.
Dobbie, P. D.
Good, S. A.
First Published: 11-Nov-2001
Publisher: Oxford University Press (OUP), Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society, 2001, 327 (4), pp. 1158-1164 (7)
Abstract: We present FUSE H Lyman series spectroscopy of the hot white dwarf companion to the 4th magnitude A1=III star Beta-Crt, which shows that it has an unusually low mass, M(WD) = 0:43 M(Sun) and has almost certainly evolved through binary interaction. This system could be a longsought remnant of Algol-type evolution, although radial velocity measurements appear to show that the pair are not close. Instead, micro-variations in the proper motion of Beta-Crt as measured by Hipparcos suggest that the period could be as high as ,10 yr. However, a lowmass white dwarf in a system with a period >=3 yr is difficult to explain by conventional models for binary evolution. We speculate on alternative models for the evolution of this system which involve an eccentric binary or multiple components.
DOI Link: 10.1046/j.1365-8711.2001.04818.x
ISSN: 0035-8711
eISSN: 1365-2966
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Creative Commons “Attribution Non-Commercial No Derivatives” licence CC BY-NC-ND, further details of which can be found via the following link: Archived with reference to SHERPA/RoMEO and publisher website.
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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