Connection of H II regions to molecular clouds of the galaxy

Details Connection of H II regions to molecular clouds of the galaxy Connection of H II regions to molecular clouds of the galaxy

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986afz....24..257m&link_type=abstract

(Astrofizika, vol. 24, Mar.-Apr. 1986, p. 257-264) Astrophysics (ISSN 0571-7132), vol. 24, no. 2, Sept. 1986, p. 150-154. Transl

Astronomy and Astrophysics

Astrophysics

1

H Ii Regions, Milky Way Galaxy, Molecular Clouds, Brightness Distribution, Carbon Monoxide

Scientific paper

The results of radio observations of optical H II regions in the CO line (J = 1 - 0) are discussed. Arguments are given which testify the genetic connection of H II regions with molecular clouds. It has been shown that the absence of the associated CO emission in some H II regions can be explained as a consequence of either observational selection (low surface brightness) or the fact that the corresponding H II regions are excited by OB stars which have already left their "placental" molecular clouds. The genetic connection of optical H II regions with molecular clouds can be considered as an evidence in favour of the idea that the molecular clouds are components of stellar associations.

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