naa a22 4500 510732526 CHVBK 20180411082958.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1134/S1063772913050089 doi (NATIONALLICENCE)springer-10.1134/S1063772913050089 Staritsin E. K.A. Barkhatova Kourovka Astronomical Observatory, B.N. El'tsin Ural Federal University, Ekaterinburg, Russia aut Turbulent entrainment at the boundaries of the convective cores of main-sequence stars [Elektronische Daten] [E. Staritsin] Extra mixing of matter in stellar interiors at the boundaries of the convective cores of mainsequence stars is considered for the first time using the physical model of turbulent entrainment developed by Arnett and collaborators based on three-dimensional hydrodynamical simulations. The model takes into account the energy that goes into mixing the matter of the convective core and layers stable against convection located above the core. It is shown that the extent of the region of extra mixing expressed in units of the pressure scale height is not constant, and decreases as the star evolves along the main sequence. Adequate allowance for extra mixing at the boundaries of convective cores is necessary to clarify the relative importance of different mixing mechanisms in stellar interiors, as well as to determine stellar parameters using asteroseismlogy. Pleiades Publishing, Ltd., 2013 Astronomy Reports SP MAIK Nauka/Interperiodica 57/5(2013-05-01), 380-390 1063-7729 57:5<380 2013 57 11444 https://doi.org/10.1134/S1063772913050089 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063772913050089 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Staritsin E. K.A. Barkhatova Kourovka Astronomical Observatory, B.N. El'tsin Ural Federal University, Ekaterinburg, Russia aut NATIONALLICENCE 773 0- Astronomy Reports SP MAIK Nauka/Interperiodica 57/5(2013-05-01), 380-390 1063-7729 57:5<380 2013 57 11444 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer