The equation of state for stellar envelopes. I - an occupation probability formalism for the truncation of internal partition functions

Details The equation of state for stellar envelopes. I - an occupation probability formalism for the truncation of internal partition functions The equation of state for stellar envelopes. I - an occupation probability formalism for the truncation of internal partition functions

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...331..794h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 331, Aug. 15, 1988, p. 794-814. Research supported by the Alexander von Hum

Mathematics

Probability

454

Equations Of State, Stellar Atmospheres, Stellar Envelopes, Stellar Interiors, Charged Particles, Cosmic Plasma, Coulomb Potential, Perturbation Theory, Probability Density Functions

Scientific paper

The authors have formulated a new equation of state for material in stellar envelopes, subject to the limits T ⪉ 107K and ρ ⪉ 10-2g cm-3. Under these conditions, the method of free energy minimization can be used to allow for nonideal effects; this method ensures thermodynamic consistency among the material properties. A chemical picture is used in which atomic and molecular particles retain their identities. An occupation probability formalism is used to represent the effects of the plasma in establishing a finite partition function, and attention is paid to representing these effects in a way that is consistent from the point of view of statistical mechanics. The use of the static screened Coulomb potential to calculate level shifts and to estimate the cutoff of the internal partition function is shown by elementary arguments to be invalid. For most of the parameter space relevant to stellar envelopes, perturbations arising from the plasma ions are shown to be dominant in establishing the internal partition functions.

Affiliated with

Also associated with

No associations

Rating

The equation of state for stellar envelopes. I - an occupation probability formalism for the truncation of internal partition functions 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 The equation of state for stellar envelopes. I - an occupation probability formalism for the truncation of internal partition functions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The equation of state for stellar envelopes. I - an occupation probability formalism for the truncation of internal partition functions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1693655