MASSIVE QUIESCENT CORES IN ORION. VI. THE INTERNAL STRUCTURES AND A CANDIDATE OF TRANSITING CORE IN NGC 2024 FILAMENT
文献类型：期刊论文
| 作者 | Ren, Zhiyuan1,2,3; Li, Di1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2016-06-10 |
| 卷号 | 824期号:1 |
| 关键词 | ISM: clouds ISM: individual objects (NGC 2024, Orion) ISM: molecules stars: formation stars: low-mass |
| 英文摘要 | We present a multiwavelength observational study of the NGC 2024 filament using infrared to submillimeter continuum and the NH3 (1, 1) and (2, 2) inversion transitions centered on FIR-3, the most massive core therein. FIR-3 is found to have no significant infrared point sources in the Spitzer/IRAC bands. But the NH3 kinetic temperature map shows a peak value at the core center with T-k = 25 K, which is significantly higher than the surrounding level (T-k = 15-19 K). Such internal heating signature without an infrared source suggests an ongoing core collapse possibly at a transition stage from first hydrostatic core (FHSC) to protostar. The eight dense cores in the filament have dust temperatures between 17.5 and 22 K. They are much cooler than the hot ridge (T-d similar to 55 K) around the central heating star IRS-2b. Comparison with a dust heating model suggests that the filament should have a distance of 3-5 pc from IRS-2b. This value is much larger than the spatial extent of the hot ridge, suggesting that the filament is spatially separated from the hot region along the line of sight. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | 1ST HYDROSTATIC CORE ; YOUNG STELLAR OBJECTS ; STAR-FORMING REGIONS ; GOULD BELT SURVEY ; DENSE CORES ; PROTOSTELLAR CORES ; MOLECULAR CLOUDS ; SPECTRAL ENERGY ; HIGH-RESOLUTION ; MAGNETIC-FIELD |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000377937300052 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/16236]  |
| 专题 | 紫金山天文台_太阳活动的多波段观测研究团组 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Chaoyang Dist Datun Rd A20, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 3.Peking Univ, Dept Astron, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Zhiyuan,Li, Di. MASSIVE QUIESCENT CORES IN ORION. VI. THE INTERNAL STRUCTURES AND A CANDIDATE OF TRANSITING CORE IN NGC 2024 FILAMENT[J]. ASTROPHYSICAL JOURNAL,2016,824(1). |
| APA | Ren, Zhiyuan,&Li, Di.(2016).MASSIVE QUIESCENT CORES IN ORION. VI. THE INTERNAL STRUCTURES AND A CANDIDATE OF TRANSITING CORE IN NGC 2024 FILAMENT.ASTROPHYSICAL JOURNAL,824(1). |
| MLA | Ren, Zhiyuan,et al."MASSIVE QUIESCENT CORES IN ORION. VI. THE INTERNAL STRUCTURES AND A CANDIDATE OF TRANSITING CORE IN NGC 2024 FILAMENT".ASTROPHYSICAL JOURNAL 824.1(2016). |
入库方式： OAI收割
来源：紫金山天文台
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