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dc.contributor.authorÇelebi, Mürvet
dc.contributor.authorBilir, Selçuk
dc.contributor.authorAk, Serap
dc.contributor.authorAk, T.
dc.contributor.authorBostanci, Zahide Funda
dc.contributor.authorYontan, Talar
dc.date.accessioned2021-03-02T22:43:44Z
dc.date.available2021-03-02T22:43:44Z
dc.date.issued2019
dc.identifier.citationÇelebi M., Bilir S., Ak S., Ak T., Bostanci Z. F. , Yontan T., "Metallicity and absolute magnitude calibrations for F-G type main-sequence stars in the Gaia era", ASTROPHYSICS AND SPACE SCIENCE, cilt.364, sa.10, 2019
dc.identifier.issn0004-640X
dc.identifier.otherav_0e584e4f-8542-42da-b4c2-46a28b15c94a
dc.identifier.othervv_1032021
dc.identifier.urihttp://hdl.handle.net/20.500.12627/15219
dc.identifier.urihttps://doi.org/10.1007/s10509-019-3659-0
dc.description.abstractIn this study, photometric metallicity and absolute magnitude calibrations were derived using F-G spectral type main-sequence stars in the Solar neighbourhood with precise spectroscopic, photometric and Gaia astrometric data for UBV photometry. The sample consists of 504 main-sequence stars covering the temperature, surface gravity and colour index intervals 5300 4 (cgs) and 0.3 < (B- V) 0 < 0.8 mag, respectively. Stars with relative trigonometric parallax errors sp/p = 0.01 were preferred from Gaia DR2 data for the estimation of their MV absolute magnitudes. In order to obtain calibrations, (U - B) 0 and (B - V) 0 colour indices of stars were preferred and a multi-variable second order equation was used. Calibrations are valid for main-sequence stars in the metallicity and absolute magnitude ranges -2 < [Fe/H] < 0.5 dex and 2.5 < MV < 6 mag, respectively. The mean value and standard deviation of the differences between original and estimated values for the metal abundance and absolute magnitude are [Fe/H] = 0.00 +/- 0.11 dex and MV = 0.00 +/- 0.22 mag, respectively. In this work, it has been shown that more precise iron abundance and absolute magnitude values were obtained with the new calibrations, compared to previous calibrations in the literature.
dc.language.isoeng
dc.subjectTemel Bilimler
dc.subjectASTRONOMİ VE ASTROFİZİK
dc.subjectUzay bilimi
dc.subjectTemel Bilimler (SCI)
dc.subjectFizik
dc.subjectAstronomi ve Astrofizik
dc.titleMetallicity and absolute magnitude calibrations for F-G type main-sequence stars in the Gaia era
dc.typeMakale
dc.relation.journalASTROPHYSICS AND SPACE SCIENCE
dc.contributor.departmentİstanbul Üniversitesi , Fen Fakültesi , Astronomi Ve Uzay Bilimleri Bölümü
dc.identifier.volume364
dc.identifier.issue10
dc.contributor.firstauthorID2210914


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