Journal
ASTRONOMY & ASTROPHYSICS
Volume 396, Issue 3, Pages 937-948Publisher
E D P SCIENCES
DOI: 10.1051/0004-6361:20021534
Keywords
stars : emission-line, Be; stars : binaries : close; stars : binaries : spectroscopic; stars : fundamental parameters
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This paper begins a new series of studies devoted to a critical re-examination of the role of duplicity for the Be phenomenon and for the variability patterns observed for many Be stars. Based on both dynamical and energy considerations and a numerical gas-dynamical modelling, a new hypothesis of the formation of Be envelopes in binaries, via an outflow from a rapidly rotating B star in a detached binary, is outlined. It is shown that such an outflow is facilitated by the presence of a companion to the B star and leads to the formation of an envelope but not to any significant mass exchange between the binary components.
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