An Improved Metallicity Calibration with UBV Photometry

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dc.contributor.authorKaraali, S.
dc.contributor.authorBilir, S.
dc.contributor.authorAk, S.
dc.contributor.authorYaz, E.
dc.contributor.authorCoskunoglu, B.
dc.date.accessioned2024-03-13T10:35:19Z
dc.date.available2024-03-13T10:35:19Z
dc.date.issued2011
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractWe used the data of 701 stars covering the colour index interval 0.32 < B - V <= 1.16, with metallicities -1.76 <= [Fe/H] <= +0.40 dex. The data were taken from the PASTEL catalogue and estimated metallicity-dependent guillotine factors, which provide a more accurate metallicity calibration. We reduced the metallicities of 11 different authors to the metallicities of Valenti & Fischer (2005), and thus obtained a homogeneous set of data which increased the accuracy of the calibration, i.e. [Fe/H] = -4.316d delta(2)(0.6) - 3.557 delta(0.6) + 0.105. Comparison of the metallicity residuals for two sets of data based on the metallicity-dependent guillotine factors with the ones obtained via metal-free guillotine factors shows that metallicities estimated by means of the new guillotine factors are more accurate than the other ones. This advantage can be used in the metallicity gradient investigation of the Galactic components, i.e. thin disc, thick disc, and halo.en_US
dc.description.sponsorshipBeykent University; National Aeronautics and Space Administrationen_US
dc.description.sponsorshipAll the authors are greatful to the anonymous referee whose comments and suggestions improved the paper. S. Karaali is grateful to the Beykent University for financial support. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France, and the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.en_US
dc.identifier.doi10.1071/AS10026
dc.identifier.endpage106en_US
dc.identifier.issn1323-3580
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-79959544422en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage95en_US
dc.identifier.urihttps://doi.org/10.1071/AS10026
dc.identifier.urihttps://hdl.handle.net/20.500.12662/4360
dc.identifier.volume28en_US
dc.identifier.wosWOS:000291889600001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherCsiro Publishingen_US
dc.relation.ispartofPublications Of The Astronomical Society Of Australiaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectstars: abundancesen_US
dc.subjectstars: metallicity calibrationen_US
dc.subjectstars: metal pooren_US
dc.titleAn Improved Metallicity Calibration with UBV Photometryen_US
dc.typeArticleen_US

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