DUCOURANT, C.; TEIXEIRA, R.; CHAUVIN, G.; KRONE-MARTINS, A.; LE CAMPION, J.-F.; GALLI, P.; SONG, I.; ZUCKERMAN, B.

doi:10.1017/S1743921312021771

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DUCOURANT, C.
M2A 2013

TEIXEIRA, R.
Instituto de Astronomia, Geofísica e Ciências Atmosféricas [São Paulo] [IAG]

CHAUVIN, G.

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Proceedings of the International Astronomical Union, Advancing the Physics of Cosmic Distances, Proceedings of the International Astronomical Union, IAU Symposium, Volume 289, pp. 386-389, 2013, Advancing the Physics of Cosmic Distances, Proceedings of the International Astronomical Union, IAU Symposium, Volume 289, pp. 386-389, 2013, Advancing the Physics of Cosmic Distances, 2012, beijing. 2013-02, vol. 289, p. 386-389

Cambridge University Press (CUP)

Résumé en anglais

We have conducted a program of trigonometric distance measurements to 13 members of the TW Hydrae Association (TWA), which will enable us (through back-tracking methods) to derive a convincing estimate of the age of the association, independent of stellar evolutionary models. With age, distance, and luminosity known for an ensemble of TWA stars and brown dwarfs, models of early stellar evolution (which are still uncertain for young ages and substellar masses) will then be constrained by observations over a wide range of masses (0.025 to 0.7 M⊙).< Réduire

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astrometry

stars: distances

stars: kinematics

stars: low-mass

brown dwarfs

stars: evolution

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Trigonometric parallaxes in the TW Hydrae Association

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