Volume 369, Number 2, April II 2001
|Page(s)||544 - 551|
|Section||Interstellar and circumstellar matter|
|Published online||15 April 2001|
The nature of Sk -67°18 in the Large Magellanic Cloud: A multiple system with an O3f component
Observatorio Astronómico, Paseo del Bosque, 1900 La Plata, Argentina
2 Observatorium Hoher List der Universitätssternwarte Bonn, 54550 Daun, Germany
3 Département de Physique, Université de Montréal, and Observatoire du Mont Mégantic, CP 6128, Succ. Centre-Ville, Montréal, Canada
Corresponding author: W. Seggewiss, firstname.lastname@example.org
Accepted: 19 January 2001
We present the results of photometric and spectroscopic observations obtained between 1980 and 1996, which show that the bright star Sk -67°18 in the Large Magellanic Cloud (LMC) is a multiple star which contains an eclipsing binary system. Our spectra show that this is an Of + O type binary, where the primary is probably of type O3f*. The orbital period of the eclipsing binary is almost exactly 2 days, which considerably compromises the obtaining of data with suitable phase coverage. Furthermore, from our radial velocity analysis of the spectral lines, Sk -67°18 appears to be a multiple system consisting of at least two pairs of short-period binaries.
Key words: galaxies: individual: LMC / stars: binaries: general / stars: early-type / stars: individual: Sk -67°18
© ESO, 2001
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