Influence of Hipparcos on Hyades age estimates from three binary systems

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dc.creatorLastennet, E.
dc.creatorValls-Gabaud, D.
dc.creatorLejeune, T.
dc.creatorOblak, E.
dc.date1999-07-30
dc.date.accessioned2026-07-07T02:32:42Z
dc.date.available2026-07-07T02:32:42Z
dc.descriptionThree independent sets of stellar theoretical models are tested with well-detached systems of the Hyades open cluster: 51 Tau, V818 Tau, and $θ^2$ Tau. The choice of these objects is discussed and a statistical method is described and applied to the colour-magnitude diagram (CMD) of the selected stars, giving rise to contour levels in the metallicity-age plane. The effects of the Hipparcos parallaxes on these confidence regions, with influence on both age and metallicity, are studied for the V818 Tau system through a comparison with very accurate but older orbital parallaxes. Finally, theoretical simultaneous age-metallicity estimates are given for the three binaries and compared with observational constraints.
dc.description4 pages, to be published in "Stellar clusters and associations: Convection, Rotation, and Dynamos", Sicily, ed. R. Pallavicini, ASP Conf. Ser
dc.identifierhttps://arxiv.org/abs/astro-ph/9907443
dc.identifierhttp://arxiv.org/abs/astro-ph/9907443
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/14555
dc.subjectAstrophysics
dc.titleInfluence of Hipparcos on Hyades age estimates from three binary systems
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