Physical parameters for population II stars

Details Physical parameters for population II stars Physical parameters for population II stars

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...183..314c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 183, no. 2, Sept. 1987, p. 314-318. Research supported by the Ministero della

Physics

12

Abundance, Near Infrared Radiation, Spectral Energy Distribution, Stellar Physics, Stellar Temperature, Ultraviolet Spectra, Galactic Evolution, Stellar Models, Stellar Spectrophotometry

Scientific paper

The observed energy distributions from the ultraviolet to the near-infrared for a number of Population II stars have been collected from the literature (Christensen, 1978; Cacciari, 1985) and have been compared with the Kurucz (1979) model atmospheres computed for different [M/H] ratios. Effective temperatures, surface gravities and apparent angular diameters have been obtained for those stars falling in the Teff range covered by the Kurucz models. For each of these stars the results refer to that [M/H] value which permits the best reproduction of the observations according to a weighted LMS error criterion. The quality of the derived parameters is discussed, and comparisons with previous results cited in the literature are presented.

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