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Star Formation in the Molecular Cloud Associated with the Monkey Head Nebula: Sequential or Spontaneous?

Published online by Cambridge University Press:  21 March 2013

J. O. Chibueze ,
K. Imura ,
T. Omodaka ,
T. Handa ,
T. Nagayama ,
K. Fujisawa ,
K. Sunada ,
M. Nakano ,
T. Kamezaki  and
Y. Yamaguchi
J. O. Chibueze
Affiliation:
Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan email: james@milkyway.sci.kagoshima-u.ac.jp
K. Imura
Affiliation:
Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan email: james@milkyway.sci.kagoshima-u.ac.jp
T. Omodaka
Affiliation:
Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan email: james@milkyway.sci.kagoshima-u.ac.jp
T. Handa
Affiliation:
Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan email: james@milkyway.sci.kagoshima-u.ac.jp
T. Nagayama
Affiliation:
Mizusawa VLBI Observatory, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
K. Fujisawa
Affiliation:
Department of Physics and Informatics, Faculty of Science, Yamaguchi University, Yoshida 1677-1, Yamaguchi 753-8512, Japan
K. Sunada
Affiliation:
Mizusawa VLBI Observatory, National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
M. Nakano
Affiliation:
Faculty of Education and Welfare Science, Oita University, Oita 870-1192, Japan
T. Kamezaki
Affiliation:
Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan email: james@milkyway.sci.kagoshima-u.ac.jp
Y. Yamaguchi
Affiliation:
Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan email: james@milkyway.sci.kagoshima-u.ac.jp
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Abstract

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We mapped the NH3 (1,1), (2,2), and (3,3) lines of the molecular cloud associated with the Monkey Head Nebula (MHN) with 1′.6 angular resolution using Kashima 34 m telescope. Its kinetic temperature distribution was contrary to what is expected for a molecular cloud at the edge of an expanding H II region and suggested that the massive star associated with S252A compact HII region formed spontaneously rather than through a sequential process.

Keywords

HII regions — ISM: clouds — ISM: molecules
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 41
Copyright
Copyright © International Astronomical Union 2013

References

Elmegreem, B. G. & Lada, C. J. 1977, ApJ, 214, 725CrossRefGoogle Scholar