| Near-Infrared Observations of the Massive Star Forming Region IRAS 23151＋5912 |
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| 作者姓名： | Xue-Peng Chen Yong-Qiang Yao Purple Mountain Observatory Chinese Academy of Sciences Nanjing |
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| 作者单位： | Xue-Peng Chen;Yong-Qiang Yao Purple Mountain Observatory Chinese Academy of Sciences，Nanjing 210008 |
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| 基金项目： | Supported by the National Natural Science Foundation of China |
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| 摘 要： | Near-infrared images and K-band spectroscopy of the massive star-forming region IRAS 23151+5912 are presented. The JHK' images reveal an embed-ded infrared cluster associated with infrared nebula, and the H_2 (2.12μm) narrow-band image provides for the first time evidence of outflow activity associated withthe cluster. That the cluster is young can be shown by the high percentage ofinfrared excess sources and the outflow activity. We suggest an age of the clus-ter of ～ 10~6yr. Eight young stars are found in the bright nebular core aroundIRAS 23151+5912. By the color-magnitude diagrams of the cluster, we found fivehigh--mass YSOs and four intermediate-mass YSOs in the cluster. Eight H_2 emissionfeatures are discovered in the region with a scattered and non-axisymmetric distri-bution, indicating the existence of multiple outflows driven by the cluster. DiffuseH_2 emission detected to the north and to the west of the cluster may result fromUV leakage of the cluster. Brγ, H_2, and CIV emission lines are
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| 关 键 词： | 近红外成像 观测 星云 窄带 放射性 红外辐射 |
Near-Infrared Observations of the Massive Star Forming Region IRAS 23151+5912 |
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| Xue-Peng Chen,Yong-Qiang Yao Purple Mountain Observatory Chinese Academy of Sciences,Nanjing .Near-Infrared Observations of the Massive Star Forming Region IRAS 23151+5912[J].Chinese Journal of Astronomy and Astrophysics,2004,4(3):284-298. |
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| Authors: | Xue-Peng Chen Yong-Qiang Yao Purple Mountain Observatory Chinese Academy of Sciences Nanjing |
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| Institution: | Xue-Peng Chen,Yong-Qiang Yao Purple Mountain Observatory Chinese Academy of Sciences,Nanjing 210008 |
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| Abstract: | |
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| Keywords: | infrared radiation stars: formation ISM: individual: IRAS 23151+5912 ISM: jets and outflows |
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