Work

The Be star

Year: 2026

Type: article

Abstract: Analysis of radial velocities of two narrow absorption components in the Mg II 4481 Å line demonstrated that the secondary of the Be star o Cas is indeed a close binary system composed of two B7 stars orbiting each other with a period of $ 11{{\overset{\text{d}}{.}}}6604 $. Orbital solutions and spectral disentangling lead to consistent system properties. The system is extremely important for the research of Be stars since its future interferometric observations with a high spatial resolution could allow the mass and perhaps even the radius of a Be star to be derived without too many model assumptions, mainly on the dynamical grounds.

Source: Springer Link (Chiba Institute of Technology)

DOI: 10.1051/0004-6361/202659678/pdf

Authors: P. Harmanec, S. Yang, M. Šlechta, E. D. Grundstrom, J. Ribeiro, A. Harmanec