VLA Observations of Orbital Motions in YLW 15

Details VLA Observations of Orbital Motions in YLW 15 VLA Observations of Orbital Motions in YLW 15

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004rmxac..21..137c&link_type=abstract

The Environment and Evolution of Double and Multiple Stars, Proceedings of IAU Colloquium 191, held 3-7 February, 2002 in Merida

Astronomy and Astrophysics

Astronomy

Ism: Jets And Outflows, Stars: Individual (Ylw 15), Stars: Pre-Main Sequence

Scientific paper

Using high angular resolution ( ˜ 0to z @. hss ''3) 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&sun;, and that VLA 1 is more massive than VLA 2.

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