Fundamental Parameters and Evolutionary Scenario of HD 327083
Vaidman N.L. Miroshnichenko A.S. Zharikov S.V. Khokhlov S.A. Agishev A.T. Yermekbayev B.S.
June 2025Multidisciplinary Digital Publishing Institute (MDPI)
Galaxies
2025#13Issue 3
In this study, we present refined orbital and fundamental parameters of the Galactic B[e] supergiant binary system HD 327083 using the Bayesian Markov Chain Monte Carlo (MCMC) method applied to the radial velocities data of HD 327083. We found that the system is well described by a circular orbital model with the mass ratio of the components of (Formula presented.). We modeled the evolutionary history of the system using MESA code. Initially, the system was formed by a binary with the orbital period of (Formula presented.) day, which contained stars with 13.00 (Formula presented.) (Formula presented.) and (Formula presented.) (Formula presented.) masses. They had a relatively slow rotation (Formula presented.) and provided a strong stellar wind. The current system age is (Formula presented.) Myr, and the state of the system corresponds to a close filling of the high massive component’s Roche lobe and a beginning of the mass transfer. The mass-transfer event will occur in a short interval of ≲0.1 Myr only. After that, the mass of the post-primary drops to ≈5 (Formula presented.), the post-secondary mass grows until ≈20 (Formula presented.), and the binary will convert to a detached system with a long orbital period of ≈700 days.
binary stars , B[e] stars , circumstellar matter , spectroscopy , stellar evolution
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Faculty of Physics and Technology, Al-Farabi Kazakh National University, Al-Farabi Ave., 71, Almaty, 050040, Kazakhstan
Fesenkov Astrophysical Institute, Observatory, 23, Almaty, 050020, Kazakhstan
Department of Physics and Astronomy, University of North Carolina—Greensboro, Greensboro, 27402, NC, United States
Instituto de Astronomía, Universidad Nacional Autónoma de México, AP 106, BC, Ensenada, 22800, Mexico
Faculty of Physics and Technology
Fesenkov Astrophysical Institute
Department of Physics and Astronomy
Instituto de Astronomía
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