Survey for Transiting Extrasolar Planets in Stellar Systems. II. Spectrophotometry and Metallicities of Open Clusters

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dc.creatorMarshall, J. L.
dc.creatorBurke, Christopher J.
dc.creatorDePoy, D. L.
dc.creatorGould, Andrew
dc.creatorKollmeier, Juna A.
dc.date2005-06-29
dc.date.accessioned2026-07-07T11:24:32Z
dc.date.available2026-07-07T11:24:32Z
dc.descriptionWe present metallicity estimates for seven open clusters based on spectrophotometric indices from moderate-resolution spectroscopy. Observations of field giants of known metallicity provide a correlation between the spectroscopic indices and the metallicity of open cluster giants. We use χ^2 analysis to fit the relation of spectrophotometric indices to metallicity in field giants. The resulting function allows an estimate of the target-cluster giants' metallicities with an error in the method of \pm0.08 dex. We derive the following metallicities for the seven open clusters: NGC 1245, [m/H]=-0.14\pm0.04; NGC 2099, [m/H]=+0.05\pm0.05; NGC 2324, [m/H]=-0.06\pm0.04; NGC 2539, [m/H]=-0.04\pm0.03; NGC 2682 (M67), [m/H]=-0.05\pm0.02; NGC 6705, [m/H]=+0.14\pm0.08; NGC 6819, [m/H]=-0.07\pm0.12. These metallicity estimates will be useful in planning future extra-solar planet transit searches since planets may form more readily in metal-rich environments.
dc.description38 pages, including 12 figures. Accepted for publication in AJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0506738
dc.identifierhttp://arxiv.org/abs/astro-ph/0506738
dc.identifierAstron.J.130:1916-1928,2005
dc.identifierdoi:10.1086/432685
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195224
dc.subjectAstrophysics
dc.titleSurvey for Transiting Extrasolar Planets in Stellar Systems. II. Spectrophotometry and Metallicities of Open Clusters
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