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Observations of Orion Molecular Cloud with NMA

Published online by Cambridge University Press:  12 April 2016

Y. Murata ,
R. Kawabe ,
M. Ishiguro ,
K.-I. Morita ,
T. Hasegawa  and
M. Hayashi
Y. Murata
Affiliation:
The Institute of Space and Astronautical Science Sagamihara, 229, Japan, (E-mailmurata@vsop.isas.ac.jp)
R. Kawabe
Affiliation:
Nobeyama Radio Observatory, Minamimaki, Nagano, 384-13, Japan
M. Ishiguro
Affiliation:
Nobeyama Radio Observatory, Minamimaki, Nagano, 384-13, Japan
K.-I. Morita
Affiliation:
Nobeyama Radio Observatory, Minamimaki, Nagano, 384-13, Japan
T. Hasegawa
Affiliation:
The Institute of Astronomy, University of Tokyo, Mitaka, 181, Japan
M. Hayashi
Affiliation:
Department of Astronomy, University of Tokyo, Bunkyo-ku, 113, Japan

Abstract

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We have made aperture synthesis multifield observations of Orion Molecular Cloud-1 (OMC-1) in the CS (J=1-0) line using the Nobeyama Millimeter Array (NMA), and obtained 9” resolution maps over 10’ length. The OMC-1 ridge shows a wiggled structure. The position angle of whole the ridge is ~ 0° - 10°, but ~ 20° - 30°around the clumps. It is possible to make this structure by the magnetic field with a position angle of ~ 150°. We also found filamentary structures in the northwest of Orion-KL, with a length-width ratio of more than 25, which are made by the gas flow from Orion-KL.

Type
3. Astronomical Results and Prospects
Information
International Astronomical Union Colloquium , Volume 140: Astronomy with Millimeter and Submillimeter Wave Interferometry , 1994 , pp. 185 - 189
Copyright
Copyright © Astronomical Society of the Pacific 1994

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