A. M. Villa, M. A. Trinidad, E. de la Fuente, T. Rodríguez-Esnard
Published 2017-10-01Version 1
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.
Comments: Accepted for Publication on Revista Mexicana de Astronomia y Astrofisica, Octubre (2017). Master thesis of A. M. Villa (DA, Universidad de Guanajuato). Corresponding Authors: M. A. Trinidad (trinidad@astro.ugto.mx) & E. de la Fuente (edfuente@astro.iam.udg.mx)
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