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An accurate position for the 6-cm OH masers in W3
Journal article

An accurate position for the 6-cm OH masers in W3

L. J Rickard, D. A Crocker, P. F Bowers and S. R Spangler
The Astronomical journal, Vol.87, pp.1806-1809
12/1982
DOI: 10.1086/113270

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Abstract

The VLA has been used as a narrowband spectrophotometer to verify that the 6-cm emission from rotationally excited OH in W3OH is maser emission, and to measure its position. The 4765-MHz emission, like the ground-state emission, arises from gas in front of the compact H II region, apparently falling into it, and is not associated with the nearby H2O maser complex.

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