publication . Preprint . Article . 2004

Interferometric Observation of the Highly Polarized SiO Maser Emission from the $v=1, J=5-4$ Transition Associated with VY Canis Majoris

Shinnaga, Hiroko; Moran, James M.; Young, Ken Harbour; Ho, Paul T. P.;
Open Access English
  • Published: 17 Aug 2004
  • Publisher: IOP Publishing
Abstract
We used the Submillimeter Array to image the SiO maser emission in the $v=1$, \$J=5-4$ transition associated with the peculiar red supergiant VY Canis Majoris. We identified seven maser components and measured their relative positions and linear polarization properties. Five of the maser components are coincident to within about 150 mas ($\sim$ 200 AU at the distance of 1.5 kpc); most of them may originate in the circumstellar envelope at a radius of about 50 mas from the star along with the SiO masers in the lowest rotational transitions. Our measurements show that two of the maser components may be offset from the inner stellar envelope (at the 3$\sigma$ level...
Subjects
arxiv: Astrophysics::Galaxy AstrophysicsAstrophysics::Solar and Stellar Astrophysics
free text keywords: individual (VY Canis Majoris) [stars], general [radio lines], interferometric [techniques], Astrophysics, masesr, polarization, late-type [stars]

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publication . Preprint . Article . 2004

Interferometric Observation of the Highly Polarized SiO Maser Emission from the $v=1, J=5-4$ Transition Associated with VY Canis Majoris

Shinnaga, Hiroko; Moran, James M.; Young, Ken Harbour; Ho, Paul T. P.;