Forum Springer Astron. Astrophys.
Forum Whats New Search Orders

Astron. Astrophys. 356, 935-942 (2000)

Table of Contents
Available formats: HTML | PDF | (gzipped) PostScript

Determination of masses and radii of the massive eclipsing binary system HV 2543 in the Large Magellanic Cloud

P.G. Ostrov *  1, E. Lapasset 2,3 and N.I. Morrell 1,3

1 Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900 La Plata, Argentina
2 Observatorio Astronómico, Universidad Nacional de Córdoba, Laprida 854, 5000 Córdoba, Argentina
3 Member of the Carrera del Investigador Científico, CONICET, Argentina

Received 5 November 1999 / Accepted 14 February 2000


We present a V light curve of the eclipsing binary system HV 2543 (Sk-67o117) in the Large Magellanic Cloud based on CCD images acquired between the years 1995 and 1998. We have analysed this light curve and published radial velocity data, finding that this system is semidetached, with the secondary (less massive and less luminous component) filling its Roche lobe. From our analysis with the Wilson-Devinney code, we estimated the following masses and radii for the components of HV 2543: [FORMULA], [FORMULA], [FORMULA] and [FORMULA]. On the basis of B and V photometry of the field stars, we found that HV 2543 is member of an OB association, perhaps related to which the massive binary system Sk-67o105 belongs.

Key words: stars: binaries: eclipsing – stars: fundamental parameters – stars: early-type – stars: individual: HV 2543

* Visiting Astronomer, Complejo Astronómico El Leoncito operated under agreement between the Consejo Nacional de Investigaciones Científicas y Técnicas de la República Argentina and the National Universities of La Plata, Córdoba and San Juan.

Send offprint requests to: P.G. Ostrov

Correspondence to: ostrov@fcaglp.edu.ar

© European Southern Observatory (ESO) 2000

Online publication: April 17, 2000