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Molecular clouds in the Extreme Outer Galaxy

Published online by Cambridge University Press:  16 July 2018

Yan Sun ,
Ye Xu ,
Ji Yang ,
Yang Su ,
Shao-Bo Zhang ,
Xue-Peng Chen ,
Zhi-Bo Jiang  and
Xin Zhou
Yan Sun
Affiliation:
Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China email: yansun@pmo.ac.cn
Ye Xu
Affiliation:
Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China email: yansun@pmo.ac.cn
Ji Yang
Affiliation:
Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China email: yansun@pmo.ac.cn
Yang Su
Affiliation:
Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China email: yansun@pmo.ac.cn
Shao-Bo Zhang
Affiliation:
Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China email: yansun@pmo.ac.cn
Xue-Peng Chen
Affiliation:
Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China email: yansun@pmo.ac.cn
Zhi-Bo Jiang
Affiliation:
Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China email: yansun@pmo.ac.cn
Xin Zhou
Affiliation:
Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, Nanjing 210008, China email: yansun@pmo.ac.cn
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Abstract

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More than 200 molecular clouds were newly found distributed beyond the Outer arm in the extreme outer Galaxy (EOG) region by MWISP. Those MCs roughly following the HI′s distribution well delineate the outermost spiral structure (the Outer Scutum-Centaurus arm) and warp of our Galaxy. Besides, those MCs show different σv-Radius relation and exhibit higher value of αvir than MCs in the inner Galaxy.

Keywords

Galaxy: structureISM: moleculesradio lines: ISM
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 13 , Symposium S336: Astrophysical Masers: Unlocking the Mysteries of the Universe , September 2017 , pp. 187 - 188
Copyright
Copyright © International Astronomical Union 2018 

References

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