Ring structure in the Monoceros R1 molecular clouds.
Abstract
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.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1979
- DOI:
- 10.1086/157332
- Bibcode:
- 1979ApJ...232..724K
- Keywords:
-
- Carbon Monoxide;
- Interstellar Gas;
- Molecular Gases;
- Ring Structures;
- Astronomical Maps;
- H Ii Regions;
- Nebulae;
- Supernovae;
- Astrophysics;
- Carbon Monoxide:Molecular Clouds;
- Molecular Clouds:Radio Maps;
- Molecular Clouds:Structure