Trigonometric parallaxes in the TW Hydrae Association
Language
en
Communication dans un congrès
This item was published in
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)
English Abstract
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 ...Read more >
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⊙).Read less <
English Keywords
astrometry
stars: distances
stars: kinematics
stars: low-mass
brown dwarfs
stars: evolution
Origin
Hal imported