Spectral energy distribution and effective temperature scale of M-giant stars. II - Application of the infra-red flux method

Details Spectral energy distribution and effective temperature scale of M-giant stars. II - Application of the infra-red flux method Spectral energy distribution and effective temperature scale of M-giant stars. II - Application of the infra-red flux method

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....99...48t&link_type=abstract

Astronomy and Astrophysics, vol. 99, no. 1, June 1981, p. 48-57.

Astronomy and Astrophysics

Astronomy

70

Giant Stars, Infrared Astronomy, M Stars, Spectral Energy Distribution, Stellar Spectrophotometry, Stellar Temperature, Colorimetry, Cool Stars, Hertzsprung-Russell Diagram, K Stars, Late Stars, Mira Variables, Stellar Atmospheres, Stellar Evolution, Stellar Models, Variable Stars

Scientific paper

The stellar effective temperature can be determined on the basis of an analysis of the shape of the spectral energy distribution curve. An investigation is conducted regarding the possibility of applying the infrared method for determining stellar effective temperature to K-M giant stars. Attention is given to an application of the infrared flux method to cool stars, emergent fluxes and R-values for M-giant stars, effective temperatures of M-giant stars, spectral classification and color indices, and the HR diagram of M-giant stars and Mira variables. Several advantages of applying the infrared flux method to K-M giant stars are shown. Difficulties, however, are related to current lists of spectroscopic data, especially for cool stars. It may, therefore, be safe to confine an application of the infrared flux method at present only to the spectral region least disturbed by line absorption.

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