Element abundances in the metal rich open cluster NGC6253

Abstract

We have carried out a big FLAMES survey of 10 Galactic open clusters aiming at different goals. One of them is the determination of chemical abundances, in order to put constraints on the radial metallicity gradient in the disk and its evolution. One of the sample clusters is the very metal rich NGC 6253. We have obtained UVES high resolution spectra of seven candidate cluster members (from the turn off up to the red clump) with the goal of determining the chemical composition of NGC 6253 and to investigate its origin and role in the interpretation of the radial metallicity gradient in the disk. Equivalent width analysis and spectral synthesis were performed using MOOG and Kurucz model atmospheres. We derived abundances of Fe, alpha- and Fe-peak elements, the light element Na and the s-process element Ba. Excluding two likely non-members and the clump giant, whose metallicity from equivalent widths is overestimated, we find an average [Fe/H]=+0.36+/-0.07 (rms) for the cluster. For most of the other elements we derive solar abundance ratios.

accepted by A&A (02/01/2007), 21 pages, 11 ps figures

References in corpus (4)

• alpha-, r-, and s-process element trends in the Galactic thin and thick disks
• Chemical Homogeneity in Collinder 261 and Implications for Chemical Tagging
• High resolution infrared spectroscopy of the old open cluster NGC6791
• The absolute motion of the peculiar cluster NGC6791

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• The Gaia-ESO survey: mapping the shape and evolution of the radial abundance gradients with open clusters
• The GALAH survey: Chemical Tagging of Star Clusters and New Members in the Pleiades
• C, N, O abundances and carbon isotope ratios in evolved stars of the open clusters Collinder 261 and NGC 6253
• TESS observations of the Pleiades cluster: a nursery for delta Scuti stars
• Stellar abundances and ages for metal-rich Milky Way globular clusters - Stellar parameters and elemental abundances for 9 HB stars in NGC6352
• The Old, Super-Metal-Rich Open Cluster, NGC 6791 - Elemental Abundances in Turn-off Stars from Keck/HIRES Spectra
• Five young $\delta$ Scuti stars in the Pleiades seen with Kepler/K2
• Radial Velocities of Three Poorly Studied Clusters and the Kinematics of Open Clusters
• The Gaia-ESO Survey: Chemical tagging in the thin disk. Open clusters blindly recovered in the elemental abundance space