Interpretation of the gross molecular spectra of S stars

Details Interpretation of the gross molecular spectra of S stars Interpretation of the gross molecular spectra of S stars

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.190..441p&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 190, Feb. 1980, p. 441-457.

Astronomy and Astrophysics

Astronomy

33

Atmospheric Models, Molecular Spectra, Red Giant Stars, Stellar Atmospheres, Stellar Spectra, Abundance, Carbon, Oxygen, S Stars, Spectral Bands, Stellar Models, Titanium Oxides, Zirconium Oxides

Scientific paper

A grid of S star model atmospheres (Teff = 2500-3500 K, C/O = 0.6-1.0, log g = 0) is examined. Several tests are made to examine the effect of (1) atomic line blanketing, (2) gravity, (3) s-process enhancements and (4) nonsolar C/O ratios. The models are used to generate column densities of molecules of particular interest in S stars. The column densities are used to develop guidelines by which the observed molecular spectra of S stars may be interpreted in terms of physical variables. The main conclusions are: (1) molecular band strengths are not good temperature indicators from star to star because of their great C/O sensitivity; carefully selected atomic lines or infrared colors should produce a reliable temperature index; (2) the band strength of TiO is a good C/O indicator in S stars when adjusted for its temperature variations; (3) the molecular spectra of S stars cannot be interpreted solely by C/O effects. When allowance is made for molecular equilibrium effects, the band strength of ZrO could provide an abundance index for S stars.

Affiliated with

Also associated with

No associations

Rating

Interpretation of the gross molecular spectra of S 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 Interpretation of the gross molecular spectra of S stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interpretation of the gross molecular spectra of S stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1621505