Other
Scientific paper
Aug 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88.1187e&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 88, Aug. 1983, p. 1187-1198.
Other
12
G Stars, Giant Stars, Interstellar Extinction, Metallicity, Stellar Luminosity, Supergiant Stars, Calibrating, Cepheid Variables, F Stars, Magellanic Clouds, Pleiades Cluster
Scientific paper
The abundance parameters of the sample of 100 G-type bright giants and supergiants whose photometry is presently discussed indicate Fe/H values of between about + 0.6 dex and the solar value, using a preliminary calibration of the photometric indices. The few long period Cepheids that are not heavily blanketed F-type stars give reddening values that are in agreement with current results from other methods of analysis. Supergiants show no clear gradients in the galactic distribution of abundances, and those nearest the sun range from an Fe/H of about + 0.3 dex, for members of the Pleiades Group, to near solar abundance. A small sample of Large Magellanic Cloud supergiants shows nearly the same range in metal abundance as the galactic stars, and gives a modulus for this Cloud of 18.3 + or - 0.20 mag.
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