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Positions of the SiO masers in Orion-KL: Anisotropy on a scale of 70 AU

Journal Article · · Astrophys. J., Lett. Ed.; (United States)
DOI:https://doi.org/10.1086/184014· OSTI ID:5983805
Using the Hat Creek interferometer, we have measured the positions of the -5 km s/sup -1/ and +16 km s/sup -1/ features in the spectrum of the v = 1, J = 2--1 SiO maser (..nu.. = 86.243 GHz) in Orion-KL. The mean position of the two features, measured relative to a set of reference quasars, is ..cap alpha..(1950) = 5/sup h/32/sup m/47./sup s/023 +- 0./sup s/005, delta(1950) = -5/sup 0/24'23.''65 +- 0.''15. This position lies within the error bars of the best infrared measurements of the position of the infrared source IRc2.
Research Organization:
Radio Astronomy Lab, University of California, Berkeley, CA
OSTI ID:
5983805
Journal Information:
Astrophys. J., Lett. Ed.; (United States), Journal Name: Astrophys. J., Lett. Ed.; (United States) Vol. 267:2; ISSN AJLEA
Country of Publication:
United States
Language:
English

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