Supergiants and the galactic metallicity gradient. I - 27 late-type supergiants in the inner-arm regions

Details Supergiants and the galactic metallicity gradient. I - 27 late-type supergiants in the inner-arm regions Supergiants and the galactic metallicity gradient. I - 27 late-type supergiants in the inner-arm regions

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...263..215l&link_type=abstract

Astrophysical Journal, Part 1, vol. 263, Dec. 1, 1982, p. 215-225.

Astronomy and Astrophysics

Astrophysics

26

Galactic Structure, Late Stars, Metallic Stars, Supergiant Stars, Abundance, Calcium, Chemical Composition, Emission Spectra, Iron, Line Spectra, M Stars, Sodium, Tables (Data)

Scientific paper

From an analysis of high-dispersion Kitt Peak echelle data, atmospheric parameters and chemical abundances have been derived for 27 supergiants of spectral type F through M. Since the stars studied lie within about 1 kpc of the sun, their abundances will form the local reference point for extensions of this study to larger distances. The derived Fe/H abundance ratios range from minus 0.6 to plus 0.1 dex, show a mean value of -0.15 dex, and have an internal uncertainty of plus or minus 0.2 dex.

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