A statistical method for treating molecular line opacities

Statistics – Computation

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

66

Atomic Spectra, Molecular Spectra, Opacity, Statistical Analysis, Stellar Atmospheres, Stellar Spectra, Carbon Compounds, Harmonic Analysis, Late Stars, Line Spectra, Radiant Flux Density, Spectrum Analysis, Thermodynamic Equilibrium

Scientific paper

A method for treating atomic and molecular line opacities in cool stellar atmospheres by a statistical opacity sampling is investigated. Under the usual assumptions of plane-parallel geometry, radiative equilibrium, hydrostatic equilibrium, and LTE, each radiative quantity is computed monochromatically at each chosen frequency and depth without any averaging of the opacity. The number of frequencies needed to allow an accurate integration of the energy flux over a given spectral interval is investigated as a function of depth, including opacity for both CN and C2. This method is extended to the calculation of a model atmosphere of a star, and the effect of the number and placement of frequency points is studied. The method is applied to treating molecular lines of CO, C2, and CN in a cool carbon star. Significant advantages of the opacity sampling method are its flexibility, which permits computation of models having arbitrary variations of chemical composition and of opacity with wavelength and depth, and generalizability to include departures from LTE.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

A statistical method for treating molecular line opacities 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 A statistical method for treating molecular line opacities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A statistical method for treating molecular line opacities will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1297555

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.