The line blanketing and structure of the atmosphere of Arcturus

Details The line blanketing and structure of the atmosphere of Arcturus The line blanketing and structure of the atmosphere of Arcturus

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...212..760j&link_type=abstract

Astrophysical Journal, Part 1, vol. 212, Mar. 15, 1977, p. 760-767.

Other

34

Atmospheric Models, Giant Stars, K Lines, Spectral Energy Distribution, Stellar Atmospheres, Stellar Spectrophotometry, Stellar Temperature, Atmospheric Temperature, Calcium, Cooling, Line Spectra, Photosphere, Stellar Gravitation, Stellar Luminosity, Stellar Models

Scientific paper

Model atmospheres for the K2 III star Arcturus (alpha Boo), calculated with various representations of the atomic and molecular opacity, are compared with the observed flux distribution and a published semiempirical temperature structure. A model computed with the opacity-sampling method and with an effective temperature of 4250 K and a surface gravity of 50 cm/sec per sec matches well, while models with other representations of the opacity produce distinctly worse fits. The effective temperature is well determined at 4250 + or - 100 K.

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