Accurate relative temperatures and reddenings for cool stars from C I lines at 1 micron

Details Accurate relative temperatures and reddenings for cool stars from C I lines at 1 micron Accurate relative temperatures and reddenings for cool stars from C I lines at 1 micron

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...360..227s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 360, Sept. 1, 1990, p. 227-231. Research supported by NSERC.

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10

Cepheid Variables, Interstellar Extinction, Stellar Spectra, Stellar Temperature, Carbon, Infrared Spectra, Late Stars, Line Spectra

Scientific paper

The 1.1-micron region of Cepheids and other cool stars contains lines of C I and Si I that can be used to give very sensitive diagnostics of Teff. The ratios, which are only weakly dependent on other parameters, yield relative temperatures accurate to 30 K. A model-independent determination of interstellar reddening can be made by comparing the ratio of line depths to photometric color indices. The relative temperatures derived from the line ratios have several important applications.

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