Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...155...72v&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 155, no. 1, Jan. 1986, p. 72-78.
Astronomy and Astrophysics
Astrophysics
22
F Stars, G Stars, Magellanic Clouds, Metallicity, Stellar Composition, Stellar Spectrophotometry, Supergiant Stars, Cepheid Variables, Hertzsprung-Russell Diagram, Interstellar Extinction, Ubv Spectra, Variable Stars
Scientific paper
A VBLUW photometric analysis is used to derive the metal content of some 100 F- and G type supergiants in the LMC. Using the empirical locus of Pel in the V-B/B-L diagram in conjunction with the relative dependence of theoretical colors on the metal abundance, a metal deficiency of 1.4-1.6 is found for the LMC stars in comparison with those in the solar neighborhood. With an average UBV system foreground reddening of E(B-V) = 0.05 for the LMC, these stars have a metal content of 0.66 + 0.11, -0.03 of the solar abundance. Agreement is found with the result of previous studies. Application to the derivation of the reddenings of most of the galactic supergiants is noted.
Driel Wim van
Greidanus Harm
van Genderen Arnout M.
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