Absolute positions of SiO masers

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Astronomical Journal; (USA)

DOI:https://doi.org/10.1086/115418· OSTI ID:6806410

Wright, M C.H.; Carlstrom, J E; Plambeck, R L; Welch, W J ^[1]

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1. California Univ., Berkeley (USA)

The absolute radio positions of the v = 1, J = 2-1 SiO masers toward nine stars have been measured with typical position uncertainties of + or - 0.15 arcsec. The stars include the IR source IRc2 in Orion and R Aqr. The maser positions are compared with astrometrically determined stellar positions. For six of the stars, the stellar and maser positions differ by less than 0.35 arcsec. For VY CMa, the optical position is displaced by 1.1 arcsec from the maser. 47 refs.

• OSTI ID: 6806410
• Journal Information: Astronomical Journal; (USA), Journal Name: Astronomical Journal; (USA) Vol. 99; ISSN 0004-6256; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
CHALCOGENIDES
COMPARATIVE EVALUATIONS
COORDINATES
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EMISSION SPECTRA
EQUIPMENT
INFRARED RADIATION
INTERSTELLAR SPACE
MASERS
MICROWAVE AMPLIFIERS
MICROWAVE EQUIPMENT
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
RADIOWAVE RADIATION
SIGNAL-TO-NOISE RATIO
SILICON COMPOUNDS
SILICON OXIDES
SPACE
SPECTRA