The abundance of M71 and 47 Tucanae

Details The abundance of M71 and 47 Tucanae The abundance of M71 and 47 Tucanae

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pasp...95...94b&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 95, Feb. 1983, p. 94-97.

Astronomy and Astrophysics

Astronomy

30

Abundance, Giant Stars, Globular Clusters, Star Clusters, Stellar Spectrophotometry, Subgiant Stars, Hydrogen, Iron, Spectrum Analysis, Stellar Color, Stellar Temperature, Titanium, Vanadium, Zirconium

Scientific paper

IPCS spectra centered on 6200 Å at 6.7 Å dispersion have been obtained for four giant stars 47 Tuc-L5427, M71-AH78, M71-AH77, and Arcturus. An abundance analysis relative to Arcturus gives values of [Fe/H] = -0.4 and -0.75 for M71 and 47 Tuc, respectively, and near solar-like ratios of Ti, V, and Zr relative to Fe. Reanalysis of the coolest star AH77 with a higher temperature and lowered continuum gives an Fe abundance and Ti/Fe ratio reminiscent of some recent echelle-derived abundance analyses.

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