Classification of Population II supergiants and related stars in the Vilnius system

Details Classification of Population II supergiants and related stars in the Vilnius system Classification of Population II supergiants and related stars in the Vilnius system

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992balta...1..216b&link_type=abstract

Baltic Astronomy, vol. 1, p. 216

Astronomy and Astrophysics

Astronomy

4

Supergiant Stars, Star Distribution, Asymptotic Giant Branch Stars, Stellar Spectra, Metallicity, Stellar Luminosity, Astronomical Photometry, Image Classification, Iron, Barium

Scientific paper

The results of photometric classification in the Vilnius system of 117 Population II supergiants, suspected supergiants, and related stars are given. Their photometric spectral types, intrinsic color indices (Y-V)0, color excesses E(Y-V), metallicities Fe/H, and absolute magnitudes MV are determined. It is shown that the system allows us to detect the UU Herculis-type supergiants photometrically. The analyzed SRd star sample falls into two groups of metallicity and luminosity. Our photometric classification assigns luminosity classes from III to V to 37 F-K stars with /b/ greater than 16 deg classified by Bartaya (1979) from objective prism spectra as supergiants.

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