Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...230..563v&link_type=abstract
Astrophysical Journal, Part 1, vol. 230, June 1, 1979, p. 563-569. Research supported by the Natural Sciences and Engineering R
Astronomy and Astrophysics
Astrophysics
22
Convective Flow, Helium, Stellar Atmospheres, Turbulent Mixing, White Dwarf Stars, Carbon, Stellar Envelopes, Stellar Models
Scientific paper
The conditions under which convective mixing episodes take place between the helium envelopes and the underlying carbon layers in helium-rich white dwarfs are investigated. It is found that, for essentially any value of the initial helium content less than the maximum mass a helium convection zone can have, mixing does occur and leads, in the vast majority of cases, to an almost pure carbon superficial composition. Mixing products that show only traces of carbon while retaining helium-dominated envelopes are possible only if the initial helium content is quite close to the maximum possible mass of the helium convection zone. In the presence of turbulence, this restriction could be relaxed, however, and the helium-rich 4670-A stars may possibly be explained in this fashion.
Fontaine Gérard
Vauclair Gerard
No associations
LandOfFree
Convective mixing in helium white dwarfs 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 Convective mixing in helium white dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Convective mixing in helium white dwarfs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1775732