A constraint on the angular momentum evolution of Be stars
Received 29 September 1998 / Accepted 30 October 1998
The Be star sample of Steele et al. (1998) has a distribution of 's that is luminosity dependant, with giants having lower projected rotational velocities than dwarfs. We show that this effect can be understood simply in terms of angular momentum conservation during the evolution from dwarf to giant. Any decretion disk or other angular momentum losing mechanism for such objects must cause a loss of no more than 15% of the stellar angular momentum over the Be phase lifetime.
Key words: stars: rotation stars: emission-line, Be
Send offprint requests to: I.A. Steele
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This article contains no SIMBAD objects.
© European Southern Observatory (ESO) 1999
Online publication: March 1, 1999