The geometry of VY Canis Majoris derived from SiO maser lines

A radiation reveals transfer calculation reveals that the SiO maser lines observed in the spectrum of VY CMa are formed in a rotating equatorial disk seen nearly edge-on. Other geometries are considered and eliminated. It is suggested that the SiO lines of NML Cyg also show evidence that they are fo...

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Veröffentlicht in:	Astrophys. J.; (United States) 1976-03, Vol.204, p.775
Hauptverfasser:	van Blerkom, D., Auer, L.
Format:	Artikel
Sprache:	eng
Schlagworte:	640102 - Astrophysics & Cosmology- Stars & Quasi-Stellar, Radio & X-Ray Sources ATMOSPHERES CHALCOGENIDES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMIC DUST DUSTS ELECTROMAGNETIC RADIATION ENERGY TRANSFER GEOMETRY HEAT TRANSFER INFRARED RADIATION MATHEMATICS OXIDES OXYGEN COMPOUNDS RADIANT HEAT TRANSFER RADIATIONS RADIOWAVE RADIATION SILICON COMPOUNDS SILICON OXIDES STARS STELLAR ATMOSPHERES VARIABLE STARS
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Zusammenfassung:	A radiation reveals transfer calculation reveals that the SiO maser lines observed in the spectrum of VY CMa are formed in a rotating equatorial disk seen nearly edge-on. Other geometries are considered and eliminated. It is suggested that the SiO lines of NML Cyg also show evidence that they are formed in a disk. (AIP)
ISSN:	0004-637X 1538-4357
DOI:	10.1086/154224