2011 Fiscal Year Final Research Report
Supersonic Turbulence Generated by Protostellar Outflows and Their Effects on Star Cluster Formation
| Project/Area Number |
20540228
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | National Astronomical Observatory of Japan (2010-2011)
Niigata University (2008-2009) |
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Principal Investigator |
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| Project Period (FY) |
2008 – 2011
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| Keywords | 星形成 / 星団形成 / 磁気流体シミュレーション |
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| Research Abstract |
Recent observations have revealed that star clusters form in parsec-scale dense clumps of molecular clouds. The purpose of this study is to clarify how stars form in the dense clumps. From the 3D simulations, we found that protostellar outflows can inject enough momenta into the surrounding gas and thus the supersonic turbulence can maintain for a long time. The supplied turbulence tends to trigger the dense core formation by compressing the surrounding gas. The cores so formed are exerted by the strong external pressures and thus the core dynamical evolution is controlled by the external pressure, instead of the self-gravity. Comparing between our model and observations of nearby cluster-forming regions, we found that our model can reproduce the observed core properties.
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Research Products
(26 results)
