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Molecular Clouds in Orion and Monoceros

Published online by Cambridge University Press:  14 August 2015

Mark Morris ,
J. Montani  and
P. Thaddeus
Mark Morris
Affiliation:
Astronomy Department, Columbia University
J. Montani
Affiliation:
Astronomy Department, Columbia University
P. Thaddeus
Affiliation:
Goddard Institute for Space Studies, New York, NY

Abstract

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A 1.2-meter millimeter-wave telescope has been used to survey CO in the constellations of Orion and Monoceros. Many new molecular clouds have been found. The distribution of molecular material shows two striking characteristics: 1) Most of the molecular clouds in this region appear to be connected by continuous extensions and filaments. To judge from continuity in radial velocity, most of these connections appear to be real, and are not merely the result of projection along the line of sight. 2) There are at least two slender filamentary features longer than 10° in angular extent. These filaments may connect the molecular clouds lying well out of the Galactic plane to clouds lying in the plane. Their shape and orientation suggest that magnetic fields may play a role in their evolution. The observed velocity gradients may be explained by accelerated gas flow along the filament.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 87: Interstellar Molecules , 1980 , pp. 197 - 203
Copyright
Copyright © Reidel 1980 

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