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International Astronomical Union Colloquium (1)

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VLA Observations of Orbital Motions in YLW 15
S. Curiel, J.M. Girart, L.F. Rodríguez, J. Cantó
Journal:

International Astronomical Union Colloquium / Volume 191 / August 2004

Published online by Cambridge University Press:

22 February 2018, pp. 137-138

Print publication:

August 2004
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Using high angular resolution (~ 03) Very Large Array (VLA) observations made at 3.6 cm during the period 1990 to 2002, we report the detection of proper motions in the components of the binary source YLW 15. We find absolute proper motions of the order of 15 km s-1. In addition, the relative astrometry between the two components reveals orbital proper motions that suggest that the total mass of this binary system is ~ 1.7 M⊙, and that VLA 1 is more massive than VLA 2.