Other
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...468..851m&link_type=abstract
Astrophysical Journal v.468, p.851
Other
13
Ism: Dust, Extinction, Stars: Circumstellar Matter, Stars: Late-Type, Stars: Mass Loss, Stars: Variables: Other Long-Period Variables
Scientific paper
We have numerically investigated the dynamical effects of dust drifting on the detailed structure of winds from late-type, pulsating variables. We examine the stability of dust-gas coupling in the presence of luminosity variations, and the assumption of complete momentum coupling, by constructing two-fluid time-dependent wind models. For the range of mass-loss rates and outflow velocities observed in Miras and long-period variables (LPVs), we have found the assumption of complete momentum coupling to be valid to a good degree. In particular, for any given distribution of grain species, small grains appear to always drift slower than larger ones. The detailed thermal balance of the wind, including collisional heating and molecular cooling, is essential in determining its structure on small scales. At large distances from the star, dust streaming and gas-dust viscous heating smooth out the wind. The outer parts of circumstellar envelopes are not subject to growing instabilities.
Castor John
Mastrodemos Nikos
Morris Mark
No associations
LandOfFree
On the Stability of the Dust-Gas Coupling in Winds from Late-Type Stars 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 On the Stability of the Dust-Gas Coupling in Winds from Late-Type Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Stability of the Dust-Gas Coupling in Winds from Late-Type Stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1459170