| A Study of Star Formation in BRC18 |
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| 作者姓名： | Sheng-Li Qin and Yue-Fang Wu |
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| 作者单位： | Sheng-Li Qin and Yue-Fang WuDepartment of Astronomy，Peking University，Beijing 100871; ywu@bac.pku.edu.cn Chinese Academy of Sciences-Peking University Joint Beijing Astrophysical Center，Beijing 100871 |
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| 基金项目： | Supported by the National Natural Science Foundation of China. This project was supported by G1999075405 of NKBRSF, 10128306，10133020 of NSFC. |
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| 摘 要： | Using the 13.7m radio telescope at Delingha, the millimeter-wave radio observatory of Purple Mountain Observatory, we made mapping observations in 12CO J = 1 - 0 line towards IRAS 05417+0907, located in the bright-rimmed cloud (BRC) BRC18. We used a 7 × 7 grid with 1' spacing, a finer and larger grid than the one used by Myers et al. Our results show that there is a bipolar outflow near IRAS 05417+0907. Combining with the observations at other wave bands, we find that the star formation process in this region is triggered by radiation-driven implosion. The significant difference between the masses of BRC18 and the cores and the relatively large ratio of associated source bolometric luminosity to the mass show that the star formation in BRC18 may be taking place in a sequence.
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| 关 键 词： | ISM 分子星云 毫米波雷达观测 信息处理 HII区 |
A Study of Star Formation in BRC18 |
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| Sheng-Li Qin and Yue-Fang Wu.A Study of Star Formation in BRC18[J].Chinese Journal of Astronomy and Astrophysics,2003,3(1):69-74. |
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| Authors: | Sheng-Li Qin Yue-Fang Wu |
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| Abstract: | Using the 13.7 m radio telescope at Delingha, the millimeter-wave radioobservatory of Purple Mountain Observatory, we made mapping observations in12CO J = 1 - 0 line towards IRAS 05417+0907, located in the bright-rimmed cloud(BRC) BRC18. We used a 7 × 7 grid with 1' spacing, a finer and larger grid thanthe one used by Myers et al. Our results show that there is a bipolar outflownear IRAS 05417+0907. Combining with the observations at other wave bands, wefind that the star formation process in this region is triggered by radiation-drivenimplosion. The significant difference between the masses of BRC18 and the coresand the relatively large ratio of associated source bolometric luminosity to the massshow that the star formation in BRC18 may be taking place in a sequence. |
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| Keywords: | ISM: clouds - star: formation- individual: IRAS 05417+0907 |
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