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Infrared Emission from Hii Regions

Published online by Cambridge University Press:  14 August 2015

C. G. Wynn-Williams
C. G. Wynn-Williams*
Affiliation:
California Institute of Technology, Pasadena, Calif., U.S.A.

Abstract

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Most Hii regions emit large amounts of energy at infrared wavelengths. Dust grains absorb a major fraction of the total energy emitted by the O stars, and this is reradiated in the infrared. The dense Hiicondensations seen by aperture synthesis radio observations are strong 20-µm infrared sources. The dust is probably mixed with the ionized gas in these sources. There are also infrared sources that are not radio sources; these may be protostars. Infrared emission has also been found from many OH/H2O maser sources associated with Hiiregions.

Type
Part 2: Galactic H ii Regions
Information
Symposium - International Astronomical Union , Volume 60: Galactic Radio Astronomy , 1974 , pp. 259 - 266
Copyright
Copyright © Reidel 1974 

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