HERSCHEL* OBSERVATIONS OF THE W3 GMC: CLUES TO THE FORMATION OF CLUSTERS OF HIGH-MASS STARS
文献类型：期刊论文
| 作者 | Rivera-Ingraham, A.1,2,3; Martin, P. G.4; Polychroni, D.5; Motte, F.6; Schneider, N.6,7,8; Bontemps, S.7,8; Hennemann, M.6; Men'shchikov, A.6; Luong, Q. Nguyen4; Andre, Ph.6 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2013-04-01 |
| 卷号 | 766期号:2 |
| 关键词 | dust, extinction infrared: stars ISM: individual objects (Westerhout 3) stars: early-type stars: formation |
| 英文摘要 | The W3 GMC is a prime target for the study of the early stages of high-mass star formation. We have used Herschel data from the HOBYS key program to produce and analyze column density and temperature maps. Two preliminary catalogs were produced by extracting sources from the column density map and from Herschel maps convolved to 500 mu m resolution. Herschel reveals that among the compact sources (FWHM < 0.45 pc), W3 East, W3 West, and W3 (OH) are the most massive and luminous and have the highest column density. Considering the unique properties of W3 East and W3 West, the only clumps with ongoing high-mass star formation, we suggest a "convergent constructive feedback" scenario to account for the formation of a cluster with decreasing age and increasing system/source mass toward the innermost regions. This process, which relies on feedback by high-mass stars to ensure the availability of material during cluster formation, could also lead to the creation of an environment suitable for the formation of Trapezium-like systems. In common with other scenarios proposed in other HOBYS studies, our results indicate that an active/dynamic process aiding in the accumulation, compression, and confinement of material is a critical feature of the high-mass star/cluster formation, distinguishing it from classical low-mass star formation. The environmental conditions and availability of triggers determine the form in which this process occurs, implying that high-mass star/cluster formation could arise from a range of scenarios: from large-scale convergence of turbulent flows to convergent constructive feedback or mergers of filaments. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000316320900019 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5975]  |
| 专题 | 国家天文台_月球与深空探测研究部 |
| 作者单位 | 1.Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H4, Canada 2.Univ Toulouse, UPS OMP, IRAP, F-31028 Toulouse 4, France 3.CNRS, IRAP, F-31028 Toulouse 4, France 4.Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 3H8, Canada 5.Univ Athens, Dept Astrophys Astron & Mech, Fac Phys, Athens 15784, Greece 6.Univ Paris Diderot, CEA Saclay, Lab AIM, CEA IRFU CNRS INSU, F-91191 Gif Sur Yvette, France 7.Univ Bordeaux, LAB, UMR 5804, F-33270 Florac, France 8.CNRS, LAB, UMR 5804, F-33270 Floirac, France 9.Natl Res Council Canada, Herzberg Inst Astrophys, Victoria, BC V9E 2E7, Canada 10.Univ Victoria, Dept Phys & Astron, STN CSC, Victoria, BC V8W 3P6, Canada |
| 推荐引用方式 GB/T 7714 | Rivera-Ingraham, A.,Martin, P. G.,Polychroni, D.,et al. HERSCHEL* OBSERVATIONS OF THE W3 GMC: CLUES TO THE FORMATION OF CLUSTERS OF HIGH-MASS STARS[J]. ASTROPHYSICAL JOURNAL,2013,766(2). |
| APA | Rivera-Ingraham, A..,Martin, P. G..,Polychroni, D..,Motte, F..,Schneider, N..,...&Wilson, C. D..(2013).HERSCHEL* OBSERVATIONS OF THE W3 GMC: CLUES TO THE FORMATION OF CLUSTERS OF HIGH-MASS STARS.ASTROPHYSICAL JOURNAL,766(2). |
| MLA | Rivera-Ingraham, A.,et al."HERSCHEL* OBSERVATIONS OF THE W3 GMC: CLUES TO THE FORMATION OF CLUSTERS OF HIGH-MASS STARS".ASTROPHYSICAL JOURNAL 766.2(2013). |
入库方式： OAI收割
来源：国家天文台
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