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- Title
NRO 45 M AND ASTE 10 M OBSERVATIONS OF DENSE GAS IN GIANT HII REGIONS OF M 33.
- Authors
Tosaki, T.; Miura, R.; Sawada, T.; Kuno, N.; Nakanishi, K.; Kohno, K.; Okumura, S. K.; Komugi, S.; Tamura, Y.; Kawabe, R.
- Abstract
We present 12CO(J = 3-2) and 12CO(J = 1-0) observations of the supergiant HII region NGC 604 in the nearest face-on spiral galaxy M 33 using the Atacama Submillimeter Telescope Experiment (ASTE) 10-m and the Nobeyama Radio Observatory (NRO) 45-m telescopes. We found high 12CO(J = 3-2)/12CO(J = 1-0) ratio gas with an arc-like distribution ("high-ratio gas arc") surrounding the central star cluster of NGC 604. Our results suggest that dense gas formation and second-generation star formation occur in the surrounding gas compressed by the stellar wind and/or supernova of the first-generation stars of NGC 604, i.e., the central star cluster of NGC 604. Thus, NGC 604 is an example of large-scale sequential star formation.
- Subjects
GALAXIES; SCIENTIFIC observation; ASTRONOMY education; SCIENTIFIC apparatus &; instruments; STAR clusters; STELLAR winds; TELESCOPES; SUPERNOVAE
- Publication
EAS Publications Series, 2008, Vol 31, p211
- ISSN
1633-4760
- Publication type
Article
- DOI
10.1051/eas:0831049