Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...246..246p&link_type=abstract
Astrophysical Journal, Part 1, vol. 246, May 15, 1981, p. 246-250.
Astronomy and Astrophysics
Astrophysics
20
Atmospheric Models, K Stars, Late Stars, Red Giant Stars, Stellar Atmospheres, Stellar Spectrophotometry, Infrared Photometry, Infrared Spectra, Line Spectra, Opacity, Stellar Temperature, Titanium Oxides
Scientific paper
Opacity-sampled model atmosphere fluxes have been used to confirm and interpret the empirical temperature scale recently derived for late K to M giant stars from angular diameters and infrared photometry. The model predictions are in excellent agreement with the empirical temperature scale. Color temperatures derived from model atmosphere fluxes are insensitive to gravity (log g = 0-2) over effective temperatures from 4000 to 3200 K (K5-M6). Synthetic spectrum calculations explain the difference between near-infrared color temperatures (on the Wing eight-color system) and effective temperatures as due to blanketing of the photometric continuum by TiO.
Bernat Andrew P.
Johnson Hollis R.
Piccirillo John
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