Metallicities for six nearby open clusters from high-resolution spectra of giant stars [Fe/H] values for a planet search sample
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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| Data(s) |
04/11/2013
04/11/2013
2012
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| Resumo |
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. European Research Council/European Community European Research Council/European Community [239953] Fundacao para a Ciencia e a Tecnologia (FCT) Fundacao para a Ciencia e Tecnologia (FCT) FCT/MCTES (Portugal) FCT/MCTES (Portugal) POPH/FSE (EC) [PTDC/CTE-AST/098528/2008] POPH/FSE (EC) FCT [SFRH/BDP/71230/2010] FCT |
| Identificador |
ASTRONOMY & ASTROPHYSICS, LES ULIS CEDEX A, v. 538, n. 1, supl. 1, Part 6, pp. 149-156, FEB, 2012 0004-6361 http://www.producao.usp.br/handle/BDPI/37852 10.1051/0004-6361/201118276 |
| Idioma(s) |
eng |
| Publicador |
EDP SCIENCES S A LES ULIS CEDEX A |
| Relação |
ASTRONOMY & ASTROPHYSICS |
| Direitos |
restrictedAccess Copyright EDP SCIENCES S A |
| Palavras-Chave | #PLANETARY SYSTEMS #STARS ABUNDANCES #TECHNIQUES SPECTROSCOPIC #OPEN CLUSTERS AND ASSOCIATIONS GENERAL #STARS FUNDAMENTAL PARAMETERS #EXTRA-SOLAR PLANETS #SUBSTELLAR COMPANION #DETERMINISTIC MODEL #STELLAR SPECTRA #HOSTING STARS #HARPS SEARCH #M-DWARF #MASS #FREQUENCY #PERIOD #ASTRONOMY & ASTROPHYSICS |
| Tipo |
article original article publishedVersion |
