Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26as...91..425w&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 91, no. 3, Dec. 1991, p. 425-451.
Astronomy and Astrophysics
Astrophysics
56
Astronomical Photometry, Carbon Stars, Magellanic Clouds, Stellar Evolution, Stellar Luminosity, Stellar Spectrophotometry, Astronomical Spectroscopy, Asymptotic Giant Branch Stars, Hertzsprung-Russell Diagram, Main Sequence Stars, Stellar Temperature
Scientific paper
This study presents JHK photometric data for over 100 field stars in the SMC and for 10 in the Large Cloud together with spectroscopic results for about half of them. In the Small Cloud carbon stars were found at higher temperatures and lower luminosities than previously observed. The faintest are below the top of the red giant branch. The medium- and low-luminosity C stars in the M-C transition zone have a low C2 content. At these luminosities, most of the J-type stars are found close to the C2-poor stars in the HR diagram. Their C2 content is about as high as in the coolest, most evolved C stars. The present observations of carbon stars in the SMC show that they cover a range in M(bo) from -3 to 5.9 mag. The transitions from M to C via S appear to occur in both Clouds at a rather well-defined range in M(bol) for SWB and classes IV and V.
Azzopardi Marc
Breysacher Jacques
Rebeirot E.
Westerlund Bengt E.
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