Metallicities and carbon abundances of 40 field red supergiants in the Small Magellanic Cloud.

Details Metallicities and carbon abundances of 40 field red supergiants in the Small Magellanic Cloud. Metallicities and carbon abundances of 40 field red supergiants in the Small Magellanic Cloud.

Dec 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995a%26a...304..347m&link_type=abstract

Astronomy and Astrophysics, v.304, p.347

Astronomy and Astrophysics

Astrophysics

6

Magellanic Clouds, Stars: Abundances, Galaxies: Abundances

Scientific paper

Low-resolution spectra (~5A) for 40 red supergiants in the Small Magellanic Cloud were compared with synthetic spectra, and their metallicities were derived. A mean metallicity of [Fe/He]=-0.71 is found for 38 stars cooler than T_eff_<4500K. Using the stellar parameters derived, the carbon abundances were determined by comparing synthetic spectra at the G-band region to the observed spectra. A mean ɛ(C)=7.85 is found, clearly higher than the low values suggested in the literature for the H II regions.

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