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Gemini-Phoenix infrared high-resolution abundance analysis of five giants in the bulge globular cluster NGC 6553

J. Melendez·B. Barbuy·E. Bica·M. Zoccali·S. Ortolani·A. Renzini·V. Hill
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Abstract

A detailed abundance analysis of 5 giants of the metal-rich bulge globular cluster NGC 6553 was carried out using high resolution infrared spectra in the H band, obtained at the Gemini-South 8m telescope. JK photometry collected at ESO and VI photometry from the Hubble Space Telescope are used to derive effective temperatures. The present analysis provides a metallicity [Fe/H] = -0.20 +/- 0.10. An overabundance of oxygen of [O/Fe] = +0.20 is found from IR OH lines.

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J. Melendez, B. Barbuy, E. Bica, M. Zoccali, S. Ortolani, A. Renzini, V. Hill. 2003-09-20. Gemini-Phoenix infrared high-resolution abundance analysis of five giants in the bulge globular cluster NGC 6553. https://doi.org/10.1051/0004-6361%3A20031357

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