Orbits in the T Tauri triple system observed with SPHERE
Author
Abstract
Aims. We present new astrometric measurements of the components in the T Tauri system and derive new orbits and masses.
Methods. T Tauri was observed during the science verification time of the new extreme adaptive optics facility SPHERE at the VLT. We combine the new positions with recalibrated NACO-measurements and data from the literature. Model fits for the orbits of T Tau Sa and Sb around each other and around T Tau N yield orbital elements and individual masses of the stars Sa and Sb.
Results. Our new orbit for T Tau Sa/Sb is in good agreement with other recent results, which indicates that enough of the orbit has been observed for a reliable fit. The total mass of T Tau S is 2.65 +/- 0.11 M-circle dot. The mass ratio M-Sb:M-Sa is 0.25 +/- 0.03, which yields individual masses of M-Sa = 2.12 +/- 0.10 M-circle dot and M-Sb = 0.53 +/- 0.06 M-circle dot. If our current knowledge of the orbital motions is used to compute the position of the southern radio source in the T Tauri system, then we find no evidence of the proposed dramatic change in its path.
Indexation
Artículo de publicación ISI
Identifier
URI: https://repositorio.uchile.cl/handle/2250/141767
DOI: 10.1051/0004-6361/201527125
ISSN: 1432-0746
Quote Item
A&A 587, A35 (2016)
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