Metallicity calibrations for dwarf stars and giants in the Geneva photometric system

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F17%3A00107851" target="_blank" >RIV/00216224:14310/17:00107851 - isvavai.cz</a>
Result on the web
<a href="https://arxiv.org/pdf/1705.00883.pdf" target="_blank" >https://arxiv.org/pdf/1705.00883.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stx1077" target="_blank" >10.1093/mnras/stx1077</a>

Result language
angličtina
Original language name
Metallicity calibrations for dwarf stars and giants in the Geneva photometric system
Original language description
We use the most homogeneous Geneva seven-colour photometric system to derive new metallicity calibrations for early A- to K-type stars that cover both, dwarf stars and giants. The calibrations are based on several spectroscopic data sets that were merged to a common scale, and we applied them to open cluster data to obtain an additional proof of the metallicity scale and accuracy. In total, metallicities of 54 open clusters are presented. The accuracy of the calibrations for single stars is in general below 0.1 dex, but for the open cluster sample with mean values based on several stars we find a much better precision, a scatter as low as about 0.03 dex. Furthermore, we combine the new results with another comprehensive photometric data set to present a catalogue of mean metallicities for more than 3000 F-and G-type dwarf stars with sigma similar to 0.06 dex. The list was extended by more than 1200 hotter stars up to about 8500 K (or spectral type A3) by taking advantage of their almost reddening free characteristic in the new Geneva metallicity calibrations. These two large samples are well suited as primary or secondary calibrators of other data, and we already identified about 20 spectroscopic data sets that show offsets up to about 0.4 dex.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GP14-26115P" target="_blank" >GP14-26115P: Towards a uniform metallicity scale for open clusters</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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