Fundamental characteristics of cool giant stars

Details Fundamental characteristics of cool giant stars Fundamental characteristics of cool giant stars

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69.1188k&link_type=abstract

Astronomicheskij Zhurnal (ISSN 0004-6299), vol. 69, no. 6, p. 1188-1194.

Astronomy and Astrophysics

Astronomy

1

Cool Stars, Giant Stars, Metallicity, Open Clusters, Stellar Spectrophotometry, Stellar Temperature, Astronomical Catalogs, Interstellar Matter

Scientific paper

Methods are suggested for determining the fundamental characteristics of cool giant stars from photometry in the Geneva and Gildenkern system, using a large number of standard stars for the calibration. The catalogs of T(eff), lg g, and Fe/H are obtained for 1000 and 600 stars in the Geneva Observatory and Gildenkern systems, respectively. Effective temperature scales and gravity accelerations are determined. The metallicity distribution is obtained according to spectral types. The metallicity data of stars belong to dynamical groups, and open clusters do not confirm the presence of a linear metallicity-age relationship. A conclusion on the existence of two age groups among disk giants is drawn.

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