Ring structure in the Monoceros R1 molecular clouds

Details Ring structure in the Monoceros R1 molecular clouds Ring structure in the Monoceros R1 molecular clouds

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...232..724k&link_type=abstract

Astrophysical Journal, Part 1, vol. 232, Sept. 15, 1979, p. 724-728. Research supported by the Aerospace Corporate Programs for

Astronomy and Astrophysics

Astrophysics

11

Carbon Monoxide, Interstellar Gas, Molecular Gases, Ring Structures, Astronomical Maps, H Ii Regions, Nebulae, Supernovae

Scientific paper

CO observations of the Mon R1 region show a partial ring structure of molecular clouds which is kinematically distinct from the larger complex of clouds associated with Mon OB1. This morphology suggests that a previous energetic event was responsible for ordering the currently observed ring. There is also some evidence for an expanding H I feature in this direction. If the molecular and atomic features have a common origin, an expansion age of approximately 1 to 6 million years is derived by considering models for the three most likely precursor events: a supernova blast wave, a shock driven by an expanding H II region, and a stellar wind from an early-type star. The relationship of star formation in this region to these possible events is discussed.

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