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Age and Metallicity Estimates for Moderate-Mass Stars in Eclipsing Binaries
We estimate the ages and metallicities for the components of 43 binarysystems using a compilation of accurate observational data on eclipsingbinaries for which lines of both components are visible in theirspectra, together with two independent modern sets of stellar evolutionmodels computed for a wide range of masses and chemical abundances. Theuncertainties of the resulting values are computed, and their stabilityis demonstrated. The ages and metallicity are compared with thosederived in other studies using different methods, as well as withindependent estimates from photometric observations and observations ofclusters. These comparisons con firm the reliability of our ageestimates. The resulting metallicities depend significantly on thechoice of theoretical model. Comparison with independent estimatesfavors the estimates based on the evolutionary tracks of the Genevagroup.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Kalkan |
| Sað Açýklýk: | 18h55m14.92s |
| Yükselim: | -15°44'55.6" |
| Görünürdeki Parlaklýk: | 7.966 |
| Uzaklýk: | 245.098 parsek |
| özdevim Sað Açýklýk: | 2.5 |
| özdevim Yükselim: | -11.1 |
| B-T magnitude: | 8.11 |
| V-T magnitude: | 7.978 |
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