Spectra of red supergiant variables in the SMC

Details Spectra of red supergiant variables in the SMC Spectra of red supergiant variables in the SMC

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mnras.193..333l&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 193, Nov. 1980, p. 333-336.

Astronomy and Astrophysics

Astronomy

7

Magellanic Clouds, Red Giant Stars, Supergiant Stars, Variable Stars, Carbon Stars, M Stars, Mira Variables

Scientific paper

Spectra of eight bright red variables in the SMC show that five are M stars, one shows no strong molecular bands, and two are carbon stars. The latter are variables of large amplitude, and it appears that there are both M stars and carbon stars among those SMC stars which appear to be supergiant analogues of Mira variables. Current theory predicts the weak C2 bands of these luminous carbon stars, but also requires strong C-13 features which are not observed.

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