THE ROLE OF MERIDIONAL CIRCULATION IN THE FORMATION OF CLASSICAL BE-STARS

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Abstract

At the stage of mass exchange in the binary system, the meridional circulation brings to the surface of the star up to two-thirds of the angular momentum that entered the star along with the accreted matter. As a result, an increase in the mass and angular momentum of the star due to accretion becomes possible. After the accretion ends, the star has a rotation typical of fast-rotating Be stars. It is assumed that the angular momentum carried by the meridional circulation to the surface of the star from the accreted matter is removed from the star by the accretion disk. The paper is based on a talk presented at the astrophysical memorial seminar “Novelties in Understanding the Evolution of Binary Stars”, dedicated to the 90th anniversary of Professor M.A. Svechnikov.

About the authors

E. I. Staritsin

Kourovka Astronomical Observatory, Yeltsin Ural Federal University

Author for correspondence.
Email: Evgeny.Staritsin@urfu.ru
Russia, Yekaterinburg

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