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Statistical Study of High-Velocity Compact Clouds Based on the Complete CO Imagings of the Central Molecular Zone

Published online by Cambridge University Press:  09 February 2017

Sekito Tokuyama ,
Tomoharu Oka ,
Shunya Takekawa ,
Masaya Yamada ,
Yuhei Iwata  and
Shiho Tsujimoto
Sekito Tokuyama
Affiliation:
Keio University, Hiyoshi 3-14-1, Kohoku, Yokohama, Kanagawa, Japan email: kyin19921227@keio.jp
Tomoharu Oka
Affiliation:
Keio University, Hiyoshi 3-14-1, Kohoku, Yokohama, Kanagawa, Japan email: kyin19921227@keio.jp
Shunya Takekawa
Affiliation:
Keio University, Hiyoshi 3-14-1, Kohoku, Yokohama, Kanagawa, Japan email: kyin19921227@keio.jp
Masaya Yamada
Affiliation:
Keio University, Hiyoshi 3-14-1, Kohoku, Yokohama, Kanagawa, Japan email: kyin19921227@keio.jp
Yuhei Iwata
Affiliation:
Keio University, Hiyoshi 3-14-1, Kohoku, Yokohama, Kanagawa, Japan email: kyin19921227@keio.jp
Shiho Tsujimoto
Affiliation:
Keio University, Hiyoshi 3-14-1, Kohoku, Yokohama, Kanagawa, Japan email: kyin19921227@keio.jp
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High-velocity compact clouds (HVCCs) is one of the populations of peculiar clouds detected in the Central Molecular Zone (CMZ) of our Galaxy. They have compact appearances (< 5 pc) and large velocity widths (> 50 km s−1). Several explanations for the origin of HVCC were proposed; e.g., a series of supernovae (SN) explosions (Oka et al. 1999) or a gravitational kick by a point-like gravitational source (Oka et al. 2016). To investigate the statistical property of HVCCs, a complete list of them is acutely necessary. However, the previous list is not complete since the identification procedure included automated processes and manual selection (Nagai 2008). Here we developed an automated procedure to identify HVCCs in a spectral line data.

Keywords

Galaxy: center – ISM: clouds – ISM: molecules
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S322: The Multi-Messenger Astrophysics of the Galactic Centre , July 2016 , pp. 154 - 155
Copyright
Copyright © International Astronomical Union 2017 

References

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