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arXiv · 1710.00281

Proper motions of L1551 IRS 5 binary system using 7 mm VLA observations

A. M. Villa·M. A. Trinidad·E. de la Fuente·T. Rodríguez-Esnard
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Abstract

We analyzed high angular resolution observations of the Very Large Array archive at a wavelength of 7 mm of the L1551 IRS 5 binary system. Six sets of observations,five with the A configuration and one with the B configuration, were used, covering a time span of about 15 years. With these multi-epoch data, we estimated the absolute and relative proper motions of the binary system, which are about 25.1 mas/yr (~ 16.7 km/s considering a distance of 140 pc) and 4.2 mas/yr, respectively. Finally, based on the relative proper motion, we estimated a total mass of the L1551 IRS 5 binary system of 1.7 Msun and an orbital period of 246 years.

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A. M. Villa, M. A. Trinidad, E. de la Fuente, T. Rodríguez-Esnard. 2017-10-01. Proper motions of L1551 IRS 5 binary system using 7 mm VLA observations. https://arxiv.org/abs/1710.00281

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