Partial mixing of material in the radiative envelope and convective core of a rotating main-sequence star with mass 16M(circle dot)

Authors
Staritsin, EI
Citation
Ei. Staritsin, Partial mixing of material in the radiative envelope and convective core of a rotating main-sequence star with mass 16M(circle dot), ASTRON REP, 45(6), 2001, pp. 467-474
Citations number
35
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY REPORTS
ISSN journal
10637729 → ACNP
Volume
45
Issue
6
Year of publication
2001
Pages
467 - 474
Database
ISI
SICI code
1063-7729(200106)45:6<467:PMOMIT>2.0.ZU;2-F
Abstract
The evolution of a rotating main-sequence star with a mass of 16M(circle do t) is studied. The flow of material in the radiative envelope is turbulent. When the exchange of energy and chemical elements is taken into account, t his turbulence transfers helium and momentum from the convective core to th e radiative envelope. The helium content at the stellar surface is enhanced toward the end of the evolution on the main sequence by 0.006-0.306, depen ding on the character of the star's initial rotation and the horizontal coe fficient of the turbulent viscosity. (C) 2001 MAIK "Nauka/Interperiodica".