The nature of Sk -67°18 in the Large Magellanic Cloud: A multiple system with an O3f* component

Details The nature of Sk -67°18 in the Large Magellanic Cloud: A multiple system with an O3f* component The nature of Sk -67°18 in the Large Magellanic Cloud: A multiple system with an O3f* component

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001a%26a...369..544n&link_type=abstract

Astronomy and Astrophysics, v.369, p.544-551 (2001)

Astronomy and Astrophysics

Astrophysics

8

Galaxies: Individual: Lmc, Stars: Binaries: General, Stars: Early-Type, Stars: Individual: Sk -67\Degr18

Scientific paper

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.

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