The luminosity dependence of the 1.65-micron flux from K and early M stars - Observations and interpretation

Details The luminosity dependence of the 1.65-micron flux from K and early M stars - Observations and interpretation The luminosity dependence of the 1.65-micron flux from K and early M stars - Observations and interpretation

Feb 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....46..391b&link_type=abstract

Astronomy and Astrophysics, vol. 46, no. 3, Feb. 1976, p. 391-396. Research supported by the Statens Naturvetenskapliga Forskni

Astronomy and Astrophysics

Astronomy

15

Infrared Astronomy, K Stars, Late Stars, M Stars, Stellar Luminosity, Stellar Spectrophotometry, Supergiant Stars, Carbon Monoxide, Cyanogen, Early Stars, Giant Stars, Hydrogen Ions, Stellar Atmospheres

Scientific paper

A number of late-type stars of various luminosity classes have been observed in three infrared colors to study the luminosity dependence of the '1.65-micron peak' around the minimum of H(-) absorption. An unexpected luminosity dependence (lower peaks) has been found for K and early M supergiants as compared with the giants. Comparisons with model-atmosphere computations, which are in relatively good agreement with the observations, explain the effect as the result of blocking by CO and CN lines in the infrared.

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