Abundances in globular cluster red giants. V - The metal-rich globular clusters

Details Abundances in globular cluster red giants. V - The metal-rich globular clusters Abundances in globular cluster red giants. V - The metal-rich globular clusters

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...270..654c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 270, July 15, 1983, p. 654-665. Research supported by the California Instit

Astronomy and Astrophysics

Astrophysics

115

Abundance, Globular Clusters, Late Stars, Metallic Stars, Red Giant Stars, Interstellar Extinction, Radial Velocity, Spectrum Analysis

Scientific paper

The metallicity scale of eight metal-rich globular clusters, relative to 47 Tuc, is estimated on the basis of low dispersion scans. A new set of high resolution, high precision CCD spectra demonstrates that systematic errors have occurred in the placement of the continuum in previously reported echelle analyses of metal-rich clusters. The reconciliation of low dispersion scan analyses and high dispersion equivalent widths is obtainable with a solar Fe/H ratio of -0.7 + or 0.1 dex for 47 Tuc, which is in keeping with the scale established by Bell and Gustafsson (1979) through photometric indices computed from synthetic spectra and model atmospheres.

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