Abstract
This paper presents the first analysis of spectroscopic and photometric observations of the southern eclipsing binary star MW Pup. ASAS V light and SAAO radial velocity curves of the system were solved simultaneously using Wilson–Devinney code. The results describe MW Pup as an Algol-like binary star with a detached configuration. The masses of the components were found to be 2.20±0.06 and 1.88±0.07M⊙ and the radii to be 1.84±0.03 and 1.72±0.03R⊙ for primary and secondary components, respectively. The distance to MW Pup was calculated to be 430±30pc from the dynamic parallax, neglecting interstellar absorption, in agreement with the value derived from the eclipse-parallax method. The evolution of the system is also discussed. Both components are unevolved Main Sequence stars and the dynamic age of the system is estimated as 263±70My when compared to theoretical evolution models.
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