Titlebook: H II Regions and Related Topics; Proceedings of a Sym T. L. Wilson,D. Downes Conference proceedings 1975 Springer-Verlag Berlin Heidelberg

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https://doi.org/10.1007/978-3-662-24975-8Most infrared sources found at λ < 40μ and associated with HII regions appear to fall into one of three classes which may be loosely referred to as the reddened 0 stars, the compact HII regions and the protostellar objects. However recent observations indicate that the distinction between the last two types is blurred.

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https://doi.org/10.1007/978-3-662-24974-1A brief account of the techniques used at λ > 40 μm is followed by photometric data, maps of IR regions and spectral data. In particular the He./H. ratio is discussed and new features on maps of W3 and the Galactic Centre are presented.

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The early stages of HII regions,A model for W3(A) is described and the results of the calculations for the dynamical evolution of a compact HII region with a dust front are discussed.

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