1999A&A...341..539B


Query : 1999A&A...341..539B

1999A&A...341..539B - Astronomy and Astrophysics, volume 341, 539-546 (1999/1-2)

High-resolution abundance analysis of two individual stars of the bulge globular cluster NGC 6553.

BARBUY B., RENZINI A., ORTOLANI S., BICA E. and GUARNIERI M.D.

Abstract (from CDS):

A detailed abundance analysis of 2 giants of the metal-rich bulge globular cluster NGC 6553 was carried out using high resolution echelle spectra obtained at the ESO 3.6m telescope. The temperature calibration of metal-rich cool giants needs high quality photometric data. We have obtained JK photometry at ESO and VI photometry with the Hubble Space Telescope for NGC 6553. The main purpose of this analysis consists in the determination of elemental abundance ratios for this key bulge cluster, as a basis for the fundamental calibration of metal-rich populations. The present analysis provides a metallicity [Fe/H]=-0.55±0.2 which, combined to overabundances relative to Fe of several elements, results in an overall metallicity Z≃Z.

Abstract Copyright:

Journal keyword(s): stars: abundances - Galaxy: globular clusters: individual: NGC 6553

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3722 0
2 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 570 0
3 Cl* NGC 6553 GOM 40056 * 18 09 17.960 -25 55 04.89   17.86 15.32     ~ 12 0
4 Cl* NGC 6553 GOM 40082 * ~ ~   17.99 15.61     ~ 9 0

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2022.05.24-08:02:38

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