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Radio Observations of Hii Regions in M33

Published online by Cambridge University Press:  14 August 2015

F. P. Israel
Affiliation:
Sterrewacht, Leiden, The Netherlands
P. C. van der Kruit
Affiliation:
Sterrewacht, Leiden, The Netherlands

Abstract

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The Westerbork Synthesis Radio Telescope was used to map the continuum radiation of M33 at 1415 MHz. Of 67 radio sources with fluxes S> 1.8 mJy (3σ), 60% coincide with Hα sources. These are all intrinsically stronger than 4 × the Orion nebula, i.e., they are giant Hiiregions. The two strongest sources, NGC 604 (58 mJy) and NGC 595 (20 mJy), are similar to W51.

Type
Part 2: Galactic H ii Regions
Copyright
Copyright © Reidel 1974