On the variation of heavy-element abundances in omega Centauri giants

Details On the variation of heavy-element abundances in omega Centauri giants On the variation of heavy-element abundances in omega Centauri giants

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.194..421m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 194, Feb. 1981, p. 421-428.

Astronomy and Astrophysics

Astronomy

33

Abundance, Centaurus Constellation, Globular Clusters, Heavy Elements, Red Giant Stars, Infrared Photometry, Lyra Constellation, Metallic Stars, Ubv Spectra

Scientific paper

Results of model-atmosphere curve-of-growth and spectrum synthesis calculations are presented for eight stars that appear on either the 'blue' or the 'red' flank of the red giant branch in the (V, B-V) diagram for omega Cen, observed with the AAT and IPCS at 10 A/mm in the yellow-red. Metal abundances are in agreement with conclusions drawn from RR Lyrae stars in the cluster and from spectrophotometry and infrared photometry of red giants. O and Ca seem to be somewhat enhanced relative to Fe, especially in the more metal-deficient stars.

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