Simultaneous (age, metallicity) estimates of the Hyades open cluster from three binary systems
Lastennet, E. · Valls-Gabaud, D. · Lejeune, T. · Oblak, E.
Original · EN
Three binary systems in the Hyades open cluster, with known metallicity and good Johnson photometric data are used to test the validity of three independent sets of stellar evolutionary tracks. A statistical method is described and applied to the colour-magnitude diagram of the six selected components, giving rise to χ²-contours in the age-metallicity plane. The effects of the Hipparcos parallaxes on these confidence regions are studied for these binaries through a comparison with very accurate but older orbital parallaxes. Independent simultaneous age-metallicity estimates are given and compared with observational constraints (see Lastennet et al. 1999, astro-ph/9905273, for more details).
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.