The metal abundance of metal-rich globular clusters. IV - Oxygen abundances

Details The metal abundance of metal-rich globular clusters. IV - Oxygen abundances The metal abundance of metal-rich globular clusters. IV - Oxygen abundances

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...177..177g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 177, no. 1-2, May 1987, p. 177-182.

Astronomy and Astrophysics

Astrophysics

39

Abundance, Globular Clusters, Metallicity, Oxygen, Stellar Spectra, Blue Stars, Carbon, Forbidden Transitions, Galactic Evolution, Halos, Red Giant Stars

Scientific paper

Oxygen abundances are obtained for eight (mostly metal-rich) globular clusters. With respect to iron, oxygen is overabundant in metal-rich globular clusters by [O/Fe] = +0.4±0.1, close to the value obtained for field halo stars. Only marginally significative differences from cluster to cluster exist. Oxygen underabundance is not the cause of the anomalous blue horizontal branches of NGC 288 and NGC 6752.

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