A VLBI polarization study of SiO masers towards VY CMa

L. L. Richter; A. J. Kemball; J. L. Jonas

doi:10.1017/S1743921307013269

A VLBI polarization study of SiO masers towards VY CMa

L. L. Richter, A. J. Kemball, J. L. Jonas

Research output: Contribution to journal › Article › peer-review

Abstract

Maser emission from the SiO molecule has been widely observed in the near-circumstellar envelopes of late-type, evolved stars. VLBI images can resolve individual SiO maser spots, providing information about the kinematics and magnetic field in the extended atmospheres of these stars. This poster presents full polarization images of several SiO maser lines towards the supergiant star VY CMa. VY CMa is a particularly strong SiO maser source and allows observations of a wide range of maser transitions. We discuss implications of these observations for VY CMa morphology, polarization, and pumping models.

Original language	English (US)
Pages (from-to)	328-329
Number of pages	2
Journal	Proceedings of the International Astronomical Union
Volume	3
Issue number	S242
DOIs	https://doi.org/10.1017/S1743921307013269
State	Published - Mar 2007

Keywords

Polarization
Stars: late-type

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1017/S1743921307013269

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title = "A VLBI polarization study of SiO masers towards VY CMa",

abstract = "Maser emission from the SiO molecule has been widely observed in the near-circumstellar envelopes of late-type, evolved stars. VLBI images can resolve individual SiO maser spots, providing information about the kinematics and magnetic field in the extended atmospheres of these stars. This poster presents full polarization images of several SiO maser lines towards the supergiant star VY CMa. VY CMa is a particularly strong SiO maser source and allows observations of a wide range of maser transitions. We discuss implications of these observations for VY CMa morphology, polarization, and pumping models.",

keywords = "Polarization, Stars: late-type",

author = "Richter, {L. L.} and Kemball, {A. J.} and Jonas, {J. L.}",

note = "I gratefully acknowledge the support of the NRF, the Fuchs Foundation and the Rhodes University Physics Department.",

year = "2007",

month = mar,

doi = "10.1017/S1743921307013269",

language = "English (US)",

volume = "3",

pages = "328--329",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press",

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TY - JOUR

T1 - A VLBI polarization study of SiO masers towards VY CMa

AU - Richter, L. L.

AU - Kemball, A. J.

AU - Jonas, J. L.

N1 - I gratefully acknowledge the support of the NRF, the Fuchs Foundation and the Rhodes University Physics Department.

PY - 2007/3

Y1 - 2007/3

N2 - Maser emission from the SiO molecule has been widely observed in the near-circumstellar envelopes of late-type, evolved stars. VLBI images can resolve individual SiO maser spots, providing information about the kinematics and magnetic field in the extended atmospheres of these stars. This poster presents full polarization images of several SiO maser lines towards the supergiant star VY CMa. VY CMa is a particularly strong SiO maser source and allows observations of a wide range of maser transitions. We discuss implications of these observations for VY CMa morphology, polarization, and pumping models.

AB - Maser emission from the SiO molecule has been widely observed in the near-circumstellar envelopes of late-type, evolved stars. VLBI images can resolve individual SiO maser spots, providing information about the kinematics and magnetic field in the extended atmospheres of these stars. This poster presents full polarization images of several SiO maser lines towards the supergiant star VY CMa. VY CMa is a particularly strong SiO maser source and allows observations of a wide range of maser transitions. We discuss implications of these observations for VY CMa morphology, polarization, and pumping models.

KW - Polarization

KW - Stars: late-type

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JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

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A VLBI polarization study of SiO masers towards VY CMa

Abstract

Keywords

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