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arXiv · 1510.03689

Drama of HII regions: Clustered and Triggered Star Formation

Jin-Zeng Li·Jinghua Yuan·Hong-Li Liu·Yuefang Wu·Ya-Fang Huang
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Abstract

In order to understand the star formation process under the influence of HII regions, we have carried out extensive investigations to well selected star-forming regions which all have been profoundly affected by existing massive O type stars. On the basis of multi-wavelength data from mid-infrared to millimeter collected using $Spitzer$, $Herschel$, and ground based radio telescopes, the physical status of interstellar medium and star formation in these regions have been revealed. In a relatively large infrared dust bubble, active star formation is undergoing and the shell is still expanding. Signs of compressed gas and triggered star formation have been tentatively detected in a relatively small bubble. The dense cores in the Rosette Molecular Complex detected at 1.1 mm using SMA have been speculated to have a likely triggered origin according to their spatial distribution. Although some observational results have been obtained, more efforts are necessary to reach trustworthy conclusions.

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Jin-Zeng Li, Jinghua Yuan, Hong-Li Liu, Yuefang Wu, Ya-Fang Huang. 2015-10-11. Drama of HII regions: Clustered and Triggered Star Formation. https://arxiv.org/abs/1510.03689

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