NASA NTRS · 19860028995
The W3 molecular cloud
Abstract
Extensive J = 1 to 0 (C-12)(O-16) and (C-13)(O-16) observations of the W3 molecular cloud and the surrounding region are presented and discussed. The velocity structure in the region is strongly suggestive of a model of large-scale, externally induced star formation. It is shown that star formation occurred in W3 and the nearby star-forming region W3(OH) after the gas within which they lie was swept up by the expanding W4 ionization front. Two condensations dominate the mass structure of the core of W3, one associated with IRS 4 and the other with IRS 5 and 1. A velocity difference between the two condensations is interpreted as indicating the two sources actually are discrete knots.
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Thronson, H. A., Jr., Lada, C. J., Hewagama, T.. 1985-10-15. The W3 molecular cloud. https://ntrs.nasa.gov/citations/19860028995
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