Abstract
view Abstract Citations (232) References (127) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The chemical composition of stars in globular clusters. Pilachowski, C. A. ; Sneden, C. ; Wallerstein, G. Abstract Detailed analyses for stars in seven globlar cluster six to thirteen kpc distant from the center of the Galaxy are presented. The observational data are shown and questions of membership and selection effects are discussed. The details of fine analysis and the determination of model atmosphere parameters are described and the chemical composition of the stars is derived. The effects of uncertainties in the model atmospheres on the derived abundances are considered. The results are combined with those of other investigators to obtain a set of cluster compositions for all globulars which have been analyzed at high resolution. These abundances are compared with lower resolution data and with other globular cluster metallicity indicators to derive new calibrations for some of these systems, with particular attention to metal-rich systems. The oxygen abundance in globular clusters is examined in detail and the results are compared to the halo field population. The implications of the results for various parameters that may determine the structure of cluster horizontal branches are discussed. Publication: The Astrophysical Journal Supplement Series Pub Date: July 1983 DOI: 10.1086/190867 Bibcode: 1983ApJS...52..241P Keywords: Abundance; Globular Clusters; Horizontal Branch Stars; Milky Way Galaxy; Stellar Spectra; Galactic Evolution; Late Stars; Metallicity; Oxygen; Spectral Line Width; Stellar Atmospheres; Stellar Color; Stellar Magnitude; Stellar Models; Astrophysics full text sources ADS | data products SIMBAD (32)
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