SIMBAD references

2016A&A...587A..35K - Astronomy and Astrophysics, volume 587A, 35-35 (2016/3-1)

Orbits in the T Tauri triple system observed with SPHERE.

KOEHLER R., KASPER M., HERBST T.M., RATZKA T. and BERTRANG G.H.-M.

Abstract (from CDS):

We present new astrometric measurements of the components in the T Tauri system and derive new orbits and masses. 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. 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±0.11M. The mass ratio MSb:MSa is 0.25±0.03, which yields individual masses of MSa=2.12±0.10M and MSb=0.53±0.06M. 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.

Abstract Copyright:

Journal keyword(s): stars: pre-main sequence - stars: individual: T Tauri - stars: fundamental parameters - binaries: close - astrometry - celestial mechanics

Simbad objects: 9

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2019.10.20-12:01:57

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