Of Photons, Gas, and Dust: The Mira Mixmaster

Details Of Photons, Gas, and Dust: The Mira Mixmaster Of Photons, Gas, and Dust: The Mira Mixmaster

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..412..163l&link_type=abstract

The Biggest, Baddest, Coolest Stars ASP Conference Series, Vol. 412, proceedings of the workshop held 16-18 July 2007, at the Mi

Astronomy and Astrophysics

Astronomy

Scientific paper

The physical processes in the atmospheres of asymptotic giant branch (AGB) stars have many important attributes. Their large mass-loss rates impact their evolution and enrich the metal content in the Galaxy. Virtually all AGB stars vary in brightness, which includes the Mira-type variables. The Mira brightness variability is caused by pulsations which produce a `shocked' atmosphere. Excitation and ionization collisional rates are small in comparison to radiative rates, due to the low densities, which makes the LTE approximation invalid. The cool atmospheric temperatures of these stars allow molecules and dust to form which further complicates the picture -- the formation of these species may not be in equilibrium either. Atmospheric modeling of these stars has followed two different approaches: (1) the hydrostatic (HS) method and (2) the hydrodynamic (HD) method. Each of these techniques has its limitations. Dust is often seen in these stars and dust formation is an important component to the chemistry of these atmospheres and to the mass loss. This paper will highlight what has been done to date in modeling the atmospheres of these stars and make suggestions as to what should be done in future modeling attempts.

Affiliated with

Also associated with

No associations

Rating

Of Photons, Gas, and Dust: The Mira Mixmaster 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 Of Photons, Gas, and Dust: The Mira Mixmaster, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Of Photons, Gas, and Dust: The Mira Mixmaster will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-835007