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Aperture Synthesis Maps of NH2D and CH3OD Lines Toward Orion-KL: The Origin of NH3 and CH3OH

Published online by Cambridge University Press:  12 April 2016

S. Saito ,
H. Mikami ,
S. Yamamoto ,
Y. Murata  and
R. Kawabe
S. Saito
Affiliation:
Institute for Molecular Science
H. Mikami
Affiliation:
Department of Astrophysics, Nagoya University
S. Yamamoto
Affiliation:
Department of Astrophysics, Nagoya University
Y. Murata
Affiliation:
The Institute of Space and Astronautical Science
R. Kawabe
Affiliation:
Nobeyama Radio Observatory

Abstract

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The 111−-101+ transition of NH2D and the 21−20 E transition of CH3OD were mapped toward Orion-KL with the Nobeyama Millimeter Array. The synthesized beamwidth is 4″ to 5″. NH2D and CH3OD are mainly distributed over the peak-intensity regions of NH3 and CH3OH in Orion A, respectively. These results suggest that “most” of the gas-phase ammonia and methanol in the region of Orion-KL originate from dust grains.

Type
3. Astronomical Results and Prospects
Information
International Astronomical Union Colloquium , Volume 140: Astronomy with Millimeter and Submillimeter Wave Interferometry , 1994 , pp. 241 - 242
Copyright
Copyright © Astronomical Society of the Pacific 1994

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