The Large System of Molecular Clouds in Orion and Monoceros
Abstract
Emission is noted over about one-eighth of an 850-sq deg region centered on Orion and Monoceros that has been surveyed in the J = 1 to 0 line of CO; most of the emission arises from giant molecular clouds associated with Orion A and B, and Mon R2. A much smaller area was surveyed for C-13O emission. A comparison of cloud masses obtained by three independent methods indicates that CO luminosity is as accurate a measure of cloud mass as other indicators. The possible relationships among clouds in the survey are discussed, including the conjecture that the overall Orion complex of clouds is a much larger system than previously considered, incorporating most of the clouds in the present survey.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1986
- DOI:
- 10.1086/164083
- Bibcode:
- 1986ApJ...303..375M
- Keywords:
-
- Astronomical Spectroscopy;
- Molecular Clouds;
- Orion Nebula;
- Spectrum Analysis;
- Carbon Monoxide;
- Emission Spectra;
- Hydrogen Clouds;
- Interstellar Matter;
- Line Spectra;
- Luminosity;
- Mass Distribution;
- Tables (Data);
- Astrophysics;
- INTERSTELLAR: MOLECULES;
- NEBULAE: H II REGIONS;
- NEBULAE: REFLECTION