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: email@example.com, firstname.lastname@example.org
2 Warsaw University Observatory, Al. Ujazdowskie 4,00-478, Warsaw, Poland e-mail: email@example.com
Corresponding author: R. E. Mennickent, firstname.lastname@example.org
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
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.