PROBLEMS IN THE TEMPERATURE CLASSIFICATION OF THE RED GIANT STARS

PROBLEMS IN THE TEMPERATURE CLASSIFICATION OF THE RED GIANT STARS

Effective temperatures determined by Tsuji by the infrared-flux method were shown by him to remain nearly constant in the range M0 to M2. It is easily shown that this is not due to any luminosity effect in the spectral types. Rather, revised MK types based primarily on TiO band strengths in this ran...

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Veröffentlicht in:Publications of the Astronomical Society of the Pacific 1982-04, Vol.94 (558), p.299-303
1. Verfasser: KEENAN, PHILIP C.
Format: Artikel
Sprache:eng
Schlagworte:
Astronomical magnitude
Colors
Effective temperature
Giant stars
Luminosity classification
M stars
Red giants
Stars
Stellar classification
Stellar spectra
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Zusammenfassung:Effective temperatures determined by Tsuji by the infrared-flux method were shown by him to remain nearly constant in the range M0 to M2. It is easily shown that this is not due to any luminosity effect in the spectral types. Rather, revised MK types based primarily on TiO band strengths in this range are shown to be more sensitive to temperature changes than are the commonly used color indices.
ISSN:0004-6280
1538-3873
DOI:10.1086/130980