Journal
ASTRONOMY & ASTROPHYSICS
Volume 538, Issue -, Pages -Publisher
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201118276
Keywords
planetary systems; stars abundances; techniques spectroscopic; open clusters and associations general; stars fundamental parameters
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Funding
- European Research Council/European Community [239953]
- Fundacao para a Ciencia e a Tecnologia (FCT)
- FCT/MCTES (Portugal)
- POPH/FSE (EC) [PTDC/CTE-AST/098528/2008]
- FCT [SFRH/BDP/71230/2010]
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We present a study of the stellar parameters and iron abundances of 18 giant stars in six open clusters. The analysis was based on high-resolution and high-S/N spectra obtained with the UVES spectrograph (VLT-UT2). The results complement our previous study where 13 clusters were already analyzed. The total sample of 18 clusters is part of a program to search for planets around giant stars. The results show that the 18 clusters cover a metallicity range between -0.23 and +0.23 dex. Together with the derivation of the stellar masses, these metallicities will allow the metallicity and mass effects to be disentangled when analyzing the frequency of planets as a function of these stellar parameters.
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