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- W2109058229 abstract "We determine the age and mass of the three best solar twin candidates in open cluster M67 through lithium evolutionary models. We computed a grid of evolutionary models with non-standard mixing at metallicity [Fe/H] = 0.01 with the Toulouse-Geneva evolution code for a range of stellar masses. We estimated the mass and age of 10 solar analogs belonging to the open cluster M67. We made a detailed study of the three solar twins of the sample, YPB637, YPB1194, and YPB1787. We obtained a very accurate estimation of the mass of our solar analogs in M67 by interpolating in the grid of evolutionary models. The three solar twins allowed us to estimate the age of the open cluster, which is 3.87+0.55-0.66 Gyr, which is better constrained than former estimates. Our results show that the 3 solar twin candidates have one solar mass within the errors and that M67 has a solar age within the errors, validating its use as a solar proxy. M67 is an important cluster when searching for solar twins." @default.
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- W2109058229 date "2010-12-14" @default.
- W2109058229 modified "2023-09-23" @default.
- W2109058229 title "Solar twins in M 67: evolutionary status and lithium abundance" @default.
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- W2109058229 doi "https://doi.org/10.1051/0004-6361/201015034" @default.
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