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Absolute Magnitude Determination of Be Stars: The Inadequacy of the 2200 Å Bump

Published online by Cambridge University Press:  12 April 2016

V. Doazan
Affiliation:
Observatoire de Paris, 61, Av. de l’Observatoire, 75014 Paris, France
A. De La Fuente
Affiliation:
INTA-VILSPA, Apartado 50727, 28080 Madrid, Spain
M. Barylak
Affiliation:
ESA IUE Observatory, Apartado 50727, 28080 Madrid, Spain
N. Cramer
Affiliation:
Observatoire de Geneve, CH-1290 Sauverny, Suisse

Abstract

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We present fax UV observations of Pleione made with the IUE satellite at two epochs: in 1979, when the star exhibited a strong shell spectrum and, in 1991, when it showed a Be-type spectrum. Between these two epochs, the 2200 Å bump changed dramatically, thus, rendering it inadequate for interstellar extinction/distance determination.

Type
XI. Supplement
Copyright
Copyright © Astronomical Society of the Pacific 1993

References

Doazan, V., Sedmak, G., Barylak, M., Rusconi, L.: 1991, A Be star Atlas of far UV and optical high resolution spectra, ESA SP-1147Google Scholar