Proc. IAU volume 13, issue S336, P187-188 2017 DOI: 10.1017/s1743921317010079 View full text
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Yan Sun, Ye Xu, Ji Yang, Yang Su, Shao-Bo Zhang, Xue-Peng Chen, Zhi-Bo Jiang, Xin Zhou

Abstract: AbstractMore 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.