Volume 393, Number 3, October III 2002
|Page(s)||887 - 896|
|Section||Interstellar and circumstellar matter|
|Published online||01 October 2002|
Universidad de Concepción, Departamento de Física, Casilla 160–C, Concepción, Chile e-mail: firstname.lastname@example.org, email@example.com
2 Warsaw University Observatory, Al. Ujazdowskie 4,00-478, Warsaw, Poland e-mail: firstname.lastname@example.org
Corresponding author: R. E. Mennickent, email@example.com
Accepted: 17 June 2002
Recently the OGLE experiment has provided accurate light curves and colours for about 2 millions stars in the Small Magellanic Cloud. We have examined this database for its content of Be stars, applying some selection criteria, and we have found a sample of ~1000 candidates. Some of these stars show beautiful light curves with amazing variations never observed in any Galactic variable. We find outbursts in 13% of the sample (type-1 stars), high and low states in 15%, periodic variations in 7%, and the usual variations seen in Galactic Be stars in 65% of the cases. The Galactic counterparts of type-1 objects could be the outbursting Be stars found by Hubert & Floquet ([CITE]) after the analysis of Hipparcos photometry. We discuss the possibility that type-1 stars could correspond to Be stars with accreting white dwarf companions or alternatively, blue pre-main sequence stars surrounded by thermally unstable accretion disks. We provide coordinates and basic photometric information for these stars and some examples of light curves.
Key words: stars: pre-main sequence / stars: emission-line, Be / stars: variable: general / X-rays: binaries / galaxies: individual: SMC
© ESO, 2002
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