Metallicities for six nearby open clusters from high-resolution spectra of giant stars [Fe/H] values for a planet search sample

• Type: Article in International Scientific Journal
• Date: 2012

Authors

N.C. Santos (Author) FCUP; Lovis, C (Author) Other; Melendez, J (Author) Other; Montalto, M (Author) Other; Naef, D (Author) Other; G. Pace (Author) FCUP

Journal

Title: Astronomy and Astrophysics

Vol. 538

Final page: A151

ISSN: 0004-6361

Publisher: EDP Sciences

Indexing

ISI Web of Knowledge - 16 Citations

Scopus - 19 Citations

Other information

Authenticus ID: P-002-DA1

DOI: 10.1051/0004-6361/201118276

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6