Complex Analysis of the Stellar Binary V446\,Cep; A New Massive Eclipsing Binary in Cepheus\,OB2 Association

Abstract

We present new spectroscopic observations of the early type, double-lined eclipsing binary V446\,Cep. The radial velocities and the photometric data obtained by $Hipparcos$ were analysed for deriving the astrophysical parameters of the components. Masses and radii were determined as M${}_p$=17.94$\pm$1.16 M${}_{\odot }$ and R${}_p$=8.33$\pm$0.29 R${}_{\odot }$, M${}_s$=2.64$\pm$0.30 M${}_{\odot }$ and R${}_s$=2.13$\pm$0.10 R${}_{\odot }$ for the components of V446\,Cep. Our analyses show that V446\,Cep is a detached Algol-type system. Based on the position of the components plotted on the theoretical Hertzsprung-Russell diagram, we estimate that the age of V446\,Cep is about 10 Myr, neglecting the effects of mass-loss and mass exchange between the components. Using the UBVJHK magnitudes and interstellar absorption we estimated the mean distance to the system V446\,Cep as 1100$\pm$62\,pc.

25 pages, 5 figures, New Astronomy. arXiv admin note: substantial text overlap with arXiv:1406.0334