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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.
|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.|
|Rights:||Creative Commons “Attribution Non-Commercial No Derivatives” licence CC BY-NC-ND, further details of which can be found via the following link: http://creativecommons.org/licenses/by-nc-nd/4.0/ Archived with reference to SHERPA/RoMEO and publisher website.|
|Appears in Collections:||Published Articles, Dept. of Physics and Astronomy|
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