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Interstellar Absorption of Some Be Stars

Published online by Cambridge University Press:  23 September 2016

D. Briot  and
J. Zorec
J. Zorec
Affiliation:
Institut d'Astrophysique, Paris, France

Extract

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It is well known that the intrinsic colors of Be stars are not the same as those of “normal” B stars and they are often redder. So interstellar absorption of Be stars determined from photometric indices may be overestimated. In order to avoid this, a method often used to determine the interstellar absorption of Be stars is based on the ultraviolet interstellar absorption bump at 2200 Å (Dorschner 1975; Nandy et al. 1975, 1976). However some peculiar Be stars exist whose circumstellar matter contributes to the 2200 Å bump (Savage et al. 1978). The aim of this work is to test the deredenning method from the 2200 Å bump for “classical” Be stars, in determining the interstellar absorption in the region of the Be star, using the surrounding normal stars.

Type
III. The Circumstellar Gas
Information
International Astronomical Union Colloquium , Volume 92: Physics of Be Stars , August 1987 , pp. 214 - 216
Copyright
Copyright © Cambridge University Press 1987

References

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