Investigation of the Magellanic eclipsing binary HV 2241

¹ Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900 La Plata, Argentina e-mail: nidia@fcaglp.edu.ar
² Member of the Carrera del Investigador Científico, CONICET, Argentina
³ Observatorio Astronómico, Universidad Nacional de Córdoba, Laprida 854, 5000 Córdoba, Argentina e-mail: lapasset@mail.oac.uncor.edu

Corresponding author: P. G. Ostrov, ostrov@fcaglp.edu.ar

Received: 25 April 2001
Accepted: 14 August 2001

Abstract

We present a CCD V light curve of HV 2241, together with some observations in the B band. We analysed our photometric data jointly with previously published radial velocities by means of the Wilson-Devinney code, and derived new values for the physical parameters of this massive eclipsing binary system. We confirm that this system is semi-detached, with the secondary (less massive and less luminous component) filling its Roche-lobe. From our analysis, we estimate the following masses and radii for the components of HV 2241: , , and . We review the spectral classification analysing HST and IUE data and discuss the temperature and the reddening for this star.