Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Stars, Interstellar Medium and the Galaxy
Mathematics, Physics, and Computer Science Faculty Articles and Research
Articles 1 - 1 of 1
Full-Text Articles in Physical Sciences and Mathematics
Sporadic Mass Ejection In Red Supergiants, Menas Kafatos, A. G. Michalitsianos
Sporadic Mass Ejection In Red Supergiants, Menas Kafatos, A. G. Michalitsianos
Mathematics, Physics, and Computer Science Faculty Articles and Research
We have applied a general mechanism first proposed by J. A. Burke to red supergiants for determining the spin-down rate and angular momentum loss of rotating stars. This model relies principally on sporadic mass ejection, which is assumed to be the result of turbulent elements accelerating material in cool supergiant.atmospheres. Mass is preferentially expelled in the forward direction of rotation, resulting in a rapid loss of angular momentum on time scales of 1Q^4-10^6 years in the supergiant evolutionary phase. Such rotational breaking will occur if the turbulent elements have characteristic sizes a few percent of the stellar radius, and rms …