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NH3 Observations of the Sgr A Complex Region with the Nobeyama Millimeter Array

Published online by Cambridge University Press:  23 September 2016

S. K. Okumura ,
M. Ishiguro ,
E. B. Fomalont ,
Y. Chikada ,
T. Kasuga ,
K.-I. Morita ,
R. Kawabe ,
H. Kobayashi ,
M. Inoue  and
T. Hasegawa
S. K. Okumura
Affiliation:
Department of Astronomy, Faculty of Science, University of Tokyo, Bunkyou–ku, Tokyo113, JAPAN
M. Ishiguro
Affiliation:
Nobeyama Radio Observatory, Minamimaki–mura, Minamisaku–gun, Nagano384–13, JAPAN
E. B. Fomalont
Affiliation:
National Radio Astronomy Observatory, Edgemont Road, Charlottesville, VA 22903, U.S.A.
Y. Chikada
Affiliation:
Nobeyama Radio Observatory, Minamimaki–mura, Minamisaku–gun, Nagano384–13, JAPAN
T. Kasuga
Affiliation:
Nobeyama Radio Observatory, Minamimaki–mura, Minamisaku–gun, Nagano384–13, JAPAN
K.-I. Morita
Affiliation:
Nobeyama Radio Observatory, Minamimaki–mura, Minamisaku–gun, Nagano384–13, JAPAN
R. Kawabe
Affiliation:
Nobeyama Radio Observatory, Minamimaki–mura, Minamisaku–gun, Nagano384–13, JAPAN
H. Kobayashi
Affiliation:
Nobeyama Radio Observatory, Minamimaki–mura, Minamisaku–gun, Nagano384–13, JAPAN
M. Inoue
Affiliation:
Nobeyama Radio Observatory, Minamimaki–mura, Minamisaku–gun, Nagano384–13, JAPAN
T. Hasegawa
Affiliation:
Institute of Astronomy, Faculty of Science, University of Tokyo, Mitaka, Tokyo181, JAPAN

Abstract

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We report NH3 observations of the Sgr A complex region including Sgr A West and the 20 km/s and 50 km/s molecular clouds (M–0.13–0.08 and M–0.02–0.07) using the Nobeyama Millimeter Array and the 45m telescope. NH3(1,1) and (2,2) lines were simultaneously observed to estimate the kinetic temperature. Our results suggest strong interaction between the molecular clouds and the continuum sources in the Sgr A complex. The interaction with continuum sources might be an important factor in determining the physical conditions of molecular gas in the galactic center region.

Type
The Environment of the SGR A Complex
Information
Symposium - International Astronomical Union , Volume 136: The Galactic Center , 1989 , pp. 371 - 377
Copyright
Copyright © Kluwer 1989 

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