Astrophysical oscillator strengths for TiO and VO bands from spectrum synthesis of spectral types M1 III to M7 III

Details Astrophysical oscillator strengths for TiO and VO bands from spectrum synthesis of spectral types M1 III to M7 III Astrophysical oscillator strengths for TiO and VO bands from spectrum synthesis of spectral types M1 III to M7 III

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...231..440b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 231, no. 2, May 1990, p. 440-452.

Astronomy and Astrophysics

Astrophysics

42

M Stars, Oscillator Strengths, Red Giant Stars, Stellar Spectra, Titanium Oxides, Vanadium Oxides, Late Stars, Molecular Spectra, Spectral Bands

Scientific paper

For application to differential studies of molecular bandstrengths in red giant atmospheres, a comprehensive set of straight mean opacity data for O-rich stars was compiled. This includes original opacities for the TiO and VO A-X and B-X band systems. This paper reports the calibration of the opacity code which has produced a set of self-consistent astrophysical oscillator strengths for the TiO gamma, delta, phi, epsilon, and VO A-X and B-X systems. By combining these values with the known laboratory values of f(e) for the TiO delta system, estimates of the absolute value of f(e) for the TiO epsilon and VO bands are made. These estimates will be useful until laboratory measurements of the transition strengths of these astrophysically important band systems are available.

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