A mapping study of L1174 with (CO)-C-13 J=2-1 and (CO)-C-12 J=3-2: star formation triggered by a Herbig Ae/Be star
文献类型：期刊论文
| 作者 | Yuan, Jing-Hua1 ; Wu, Yuefang2; Li, Jin Zeng1; Yu, Wentao2; Miller, Martin3
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2013-02-01 |
| 卷号 | 429期号:2页码:954-966 |
| 关键词 | line: profiles molecular data stars: formation ISM: clouds ISM: molecules ISM: structure |
| 英文摘要 | We have carried out a comprehensive study of the molecular conditions and star-forming activities in the dark cloud L1174 using multiwavelength data. Mapping observations of L1174 in (CO)-C-13 J = 2 - 1 and (CO)-C-12 J = 3 - 2 were performed using the Kolner Observatorium fur Submillimetre Astronomie (KOSMA) 3-m telescope. Six molecular cores have been resolved, with masses ranging from 5 to 31 M-circle dot and sizes ranging from 0.17 to 0.39 pc. The large area ahead of the Herbig Be star HD 200775 is expanding and core 1 has a collapse signature. The large linewidths of (CO)-C-13 J = 2 - 1 indicate the ubiquity of the turbulent motions in this region. The spectra of (CO)-C-12 J = 3 - 2 prevalently show conspicuously asymmetric double-peaked profiles. In a large area, red-skewed profiles are detected, suggesting a scenario of global expansion. There is a large cavity around the Herbig Be star HD 200775, which is the brightest star in L1174. The gas around the cavity has been severely compressed by the stellar winds from HD 200775. Feedback from HD 200775 might have helped to form the molecular cores around the cavity. In total, 17 potential young stellar objects from the Two-Micron All-Sky Survey (2MASS) have been identified, according to their 2MASS colour indices. The spatial distribution of these 2MASS sources indicates that some of them have a triggered origin. All this suggests that feedback from a Herbig Ae/Be star might also have the potential to trigger star-forming activities. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000318239300003 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6046]  |
| 专题 | 国家天文台_应用天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 3.Univ Cologne, Inst Phys 1, D-50937 Cologne, Germany |
| 推荐引用方式 GB/T 7714 | Yuan, Jing-Hua,Wu, Yuefang,Li, Jin Zeng,et al. A mapping study of L1174 with (CO)-C-13 J=2-1 and (CO)-C-12 J=3-2: star formation triggered by a Herbig Ae/Be star[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,429(2):954-966. |
| APA | Yuan, Jing-Hua,Wu, Yuefang,Li, Jin Zeng,Yu, Wentao,&Miller, Martin.(2013).A mapping study of L1174 with (CO)-C-13 J=2-1 and (CO)-C-12 J=3-2: star formation triggered by a Herbig Ae/Be star.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,429(2),954-966. |
| MLA | Yuan, Jing-Hua,et al."A mapping study of L1174 with (CO)-C-13 J=2-1 and (CO)-C-12 J=3-2: star formation triggered by a Herbig Ae/Be star".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 429.2(2013):954-966. |
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来源：国家天文台
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