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Observations of Orion Molecular Cloud with NMA

  • Y. Murata (a1), R. Kawabe (a2), M. Ishiguro (a2), K.-I. Morita (a2), T. Hasegawa (a3) and M. Hayashi (a4)...

Abstract

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.

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Copyright

References

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Axon, D.J., & Taylor, K. 1984, MNRAS, 270, 241.
Bally, J., & Lada, C.J. 1983, ApJ, 265, 824.
Hasegawa, T. 1987, Star Forming Regions, Peimbert, M. & Jugaku, J., Dordrecht: Reidel, 123.
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Murata, Y., Kawabe, R., Ishiguro, M., Kasuga, T., Morita, K.-I., Takano, T., & Hasegawa, T. 1990, ApJ, 359, 125.
Taylor, K.N.R., Storey, J.W.V., Sandell, G., Williams, P.M., & Zealey, W.J. 1984, Nature, 311, 236.

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