Binary stars in moving groups
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2014

Precise determination of dynamical masses of pre-main-sequence (PMS) stars is necessary to calibrate PMS stellar evolutionary models, whose predictions are in disagreement with measurements for masses below 1.2M⊙. Binary stars in young, nearby loose associations are particularly good candidates, since all members share a common age. We present phase-reference EVN observations of the binary system HD 160934 A/c, that belongs to the ABDoradus moving group, from which we have measured both the relative and absolute orbital motion. Accordingly, we obtained precise estimates of the mass of the components of this binary. Also we report on other PMS binary systems as EKDra and AB DorB. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.

Författare

R. Azulay

Universitat de Valencia

Universität Bonn

Max Planck-institutet

J. C. Guirado

Universitat de Valencia

J. M. Marcaide

Universitat de Valencia

Ivan Marti-Vidal

Chalmers, Rymd- och geovetenskap, Onsala rymdobservatorium

Eduardo Ros

Universitat de Valencia

Max Planck-institutet

Proceedings of Science. 12th European VLBI Network Symposium and Users Meeting, EVN 2014 ; Cagliari; Italy; 7 October 2014 through 10 October 2014

1824-8039 (eISSN)

Vol. Part F113821 056-

Drivkrafter

Hållbar utveckling

Ämneskategorier

Astronomi, astrofysik och kosmologi

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Senast uppdaterat

2018-03-06