CO observations toward the isolated mid-infrared bubble S44: External triggering of O-star formation by a cloud-cloud collision.

Mikito Kohno,Kengo Tachihara,Shinji Fujita,Yusuke Hattori,Kazufumi Torii,Atsushi Nishimura,Misaki Hanaoka,S. Yoshiike,Rei Enokiya,Keisuke Hasegawa,Akio Ohama,Hidetoshi Sano,H. Yamamoto,Yasuo Fukui

Publications of the Astronomical Society of Japan（2021）

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摘要

We have performed a multi-wavelength study of the mid-infrared bubble S44 to investigate the origin of isolated high-mass star(s) and the star-formation process around the bubble formed by the H ii region. We report on the results of new CO observations (12CO, 13CO J = 1–0, and 12CO J = 3–2) toward the isolated bubble S44 using the NANTEN2, Mopra, and ASTE radio telescopes. We found two velocity c...

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关键词

H ii regions,ISM: bubbles,ISM: clouds,ISM: individual objects (S44),stars: formation

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