Effective temperatures of late-type stars - The field giants from K0 to M6

Astronomy and Astrophysics – Astronomy

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Giant Stars, Late Stars, Stellar Atmospheres, Stellar Spectra, Stellar Temperature, Bolometers, Diameters, Infrared Astronomy, Infrared Photometry, Lunar Occultation, M Stars, Stellar Models, Stellar Spectrophotometry

Scientific paper

Angular diameters from lunar occultation are combined with infrared photometry to determine effective temperatures for K0-M6 giants. The relations between effective temperature and color temperature, MK spectral type, V-K color, and I(104)-L color are derived. The principal result is a general increase in effective temperature for the cooler spectral types compared to previous calibrations. Throughout the temperature range studied, excellent agreement is obtained with recent model atmosphere computations.

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