Radio Observations of H II Regions in M33 (read by H. J. Habing)

@inproceedings{Israel1974RadioOO,
  title={Radio Observations of H II Regions in M33 (read by H. J. Habing)},
  author={Frank P. Israel and P. C. van der Kruit},
  year={1974}
}
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 H ii regions. The two strongest sources, NGC 604 (58 mJy) and NGC 595 (20 mJy), are similar to W51.