Gas emission and dynamics in the infrared dark cloud G31.23+0.05
文献类型：期刊论文
| 作者 | Liu, Xiao-Lan1 ; Wang, Jun-Jie; Xu, Jin-Long; Zhang, Chuan-Peng
|
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2017-03-01 |
| 卷号 | 17期号:4 |
| 关键词 | stars: formation ISM: HII regions ISM: molecules ISM: individual (IRDC G31.23+0.05) ISM: kinematics and dynamics |
| 英文摘要 | We performed a multiwavelength study towards the infrared dark cloud (IRDC) G31.23+0.05 with new CO observations from Purple Mountain Observatory and archival data (the GLIMPSE, MIPSGAL, HERSCHEL, ATLASGAL, BGPS and NVSS surveys). From these observations, we identified three IRDCs with systemic velocities of 108.36 +/- 0.06 (cloud A), 104.22 +/- 0.11 (cloud B) and 75.73 +/- 0.07 km s(-1) (cloud C) in the line of sight towards IRDC G31.23. Analyses of the molecular and dust emission suggest that cloud A is a filamentary structure containing a young stellar object; clouds B and C both include a starless core. Clouds A and B are gravitationally bound and have a chance to form stars. In addition, the velocity information and the position-velocity diagram suggest that clouds A and B are adjacent in space and provide a clue hinting at a possible cloud-cloud collision. Additionally, the distribution of dust temperature shows a temperature bubble. The compact core in cloud A is associated with an UCHII region, an IRAS source, H2O masers, CH3OH masers and OH masers, suggesting that massive star formation is active there. We estimate the age of the HII region to be (0.03-0.09) Myr, indicating that the star inside is young. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | MASSIVE STAR-FORMATION ; H-II REGIONS ; FORMING REGIONS ; GALACTIC PLANE ; PHYSICAL-PROPERTIES ; METHANOL MASERS ; H2O MASERS ; CORES ; KINEMATICS ; HERSCHEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000399221400005 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8221]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.NAOC TU Joint Ctr Astrophys, Lhasa 850000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xiao-Lan,Wang, Jun-Jie,Xu, Jin-Long,et al. Gas emission and dynamics in the infrared dark cloud G31.23+0.05[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2017,17(4). |
| APA | Liu, Xiao-Lan,Wang, Jun-Jie,Xu, Jin-Long,&Zhang, Chuan-Peng.(2017).Gas emission and dynamics in the infrared dark cloud G31.23+0.05.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,17(4). |
| MLA | Liu, Xiao-Lan,et al."Gas emission and dynamics in the infrared dark cloud G31.23+0.05".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 17.4(2017). |
入库方式： OAI收割
来源：国家天文台
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