PHOTOMETRY OF F-K TYPE BRIGHT GIANTS AND SUPERGIANTS .2. CALIBRATION ON INDEXES IN TERMS OF LUMINOSITY REDDENING AND ABUNDANCE OF F-TYPE STARS

被引:11
作者
EGGEN, OJ
机构
[1] Natl. Optical Astron. Observatories, Cerro Tololo Inter-Amer. Observatory, La Serena
关键词
D O I
10.1086/116007
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The intermediate band and H-beta photometry of bright giants and supergiants of type F, given in Paper I, is used to obtain values of age, surface gravity, reddening, luminosity, and heavy element abundance of these stars. The few supergiants in galactic clusters are used to test the results. The bulk of the stars have ages between 10(7) and 10(8) yr on the timescale dictated by the convective overshoot models, and have [Fe/H] between - 0.05 and 0.15 dex.
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页码:1826 / 1836
页数:11
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