Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-09-30
Astronomy and Astrophysics
Astrophysics
10 pages, 2 figures, proceedings of the IAU colloquium 193 "variable stars in the local group", ed. D.W. Kurtz and K. Pollard,
Scientific paper
The element settling due to the combined effects of gravity, thermal gradient, radiative acceleration and concentration gradient may lead to important abundance variations inside the stars, which cannot be neglected in the computations of stellar structure. These processes where first introduced to account for abundance anomalies in "peculiar stars", but their importance in the so-called "normal" stars is now fully acknowledged, specially after the evidence of helium settling in the Sun from helioseismology. These microscopic processes work in competition with macroscopic motions, like rotation-induced mixing or mass loss, which increase the settling time scales. We have recently obtained clear evidences that asteroseismology of main sequence solar type stars can give signatures of the chemical variations inside the stars and help for a better understanding of these processes.
No associations
LandOfFree
Element stratification in main sequence stars and its effect on stellar oscillations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Element stratification in main sequence stars and its effect on stellar oscillations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Element stratification in main sequence stars and its effect on stellar oscillations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-279572