EDP Sciences
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Volume 412, Number 1, December II 2003
Page(s) 97 - 103
Section Stellar clusters and associations
DOI http://dx.doi.org/10.1051/0004-6361:20034152

A&A 412, 97-103 (2003)
DOI: 10.1051/0004-6361:20034152

A search for variable stars in Trumpler 24

J. N. Fu1, C. Sterken1, H. W. Duerbeck1 and R. E. Mennickent2

1  Astronomy Group, Vrije Universiteit Brussels (VUB), Pleinlaan 2, 1050 Brussels, Belgium
2  Departamento de Física, Universidad de Concepción, Casilla 160-C Concepción, Chile

(Received 1 August 2003 / Accepted 2 September 2003 )

Trumpler 24 is a comparatively poorly-studied young open cluster. To investigate the correlation between the Be phenomenon and the cluster age, and to study the stellar variability in Trumpler 24, CCD time-series observations were made in 2001, and spectra were obtained in 2002. The results reveal 21 new variable stars, including 3 eclipsing binaries, no Be stars.

Key words: stars: variables: general -- Galaxy: open clusters and associations: individual: Trumpler 24 -- stars: emission-line, Be

Offprint request: J. N. Fu, jianfu@vub.ac.be

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© ESO 2003