Herschel observations of embedded protostellar clusters in the Rosette molecular cloud
文献类型：期刊论文
| 作者 | Hennemann, M.1; Motte, F.1; Bontemps, S.1,2; Schneider, N.1; Csengeri, T.1; Balog, Z.3; Di Francesco, J.4; Zavagno, A.5; Andre, Ph.1; Men'shchikov, A.1 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2010-07-01 |
| 卷号 | 518 |
| 关键词 | stars: formation stars: protostars ISM: individual objects: Rosette |
| 英文摘要 | The Herschel OB young stellar objects survey (HOBYS) has observed the Rosette molecular cloud, providing an unprecedented view of its star formation activity. These new far-infrared data reveal a population of compact young stellar objects whose physical properties we aim to characterise. We compiled a sample of protostars and their spectral energy distributions that covers the near-infrared to submillimetre wavelength range. These were used to constrain key properties in the protostellar evolution, bolometric luminosity, and envelope mass and to build an evolutionary diagram. Several clusters are distinguished including the cloud centre, the embedded clusters in the vicinity of luminous infrared sources, and the interaction region. The analysed protostellar population in Rosette ranges from 0.1 to about 15 M-circle dot with luminosities between 1 and 150 L-circle dot, which extends the evolutionary diagram from low-mass protostars into the high-mass regime. Some sources lack counterparts at near-to mid-infrared wavelengths, indicating extreme youth. The central cluster and the Phelps & Lada 7 cluster appear less evolved than the remainder of the analysed protostellar population. For the central cluster, we find indications that about 25% of the protostars classified as Class I from near-to mid-infrared data are actually candidate Class 0 objects. As a showcase for protostellar evolution, we analysed four protostars of low-to intermediate-mass in a single dense core, and they represent different evolutionary stages from Class 0 to Class I. Their mid-to far-infrared spectral slopes flatten towards the Class I stage, and the 160 to 70 mu m flux ratio is greatest for the presumed Class 0 source. This shows that the Herschel observations characterise the earliest stages of protostellar evolution in detail. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000281527200085 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7710]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | 1.Univ Paris Diderot, Lab AIM, CEA IRFU, CNRS INSU,CEA Saclay, F-91191 Gif Sur Yvette, France 2.Univ Bordeaux, Lab Astrophys Bordeaux, CNRS INSU, F-33271 Floirac, France 3.Max Planck Inst Astron, D-69117 Heidelberg, Germany 4.Univ Victoria, Dept Phys & Astron, Natl Res Council Canada, Herzberg Inst Astrophys, Victoria, BC, Canada 5.Univ Aix Marseille 1, Lab Astrophys Marseille, CNRS INSU, F-13388 Marseille 13, France 6.Univ Paris 11, IAS, F-91435 Orsay, France 7.CALTECH, NHSC IPAC, Pasadena, CA 91125 USA 8.Univ Toulouse, CESR, F-31028 Toulouse 4, France 9.Univ Toulouse, CNRS, UMR 5187, F-31028 Toulouse 4, France 10.IRAM, F-38406 St Martin Dheres, France |
| 推荐引用方式 GB/T 7714 | Hennemann, M.,Motte, F.,Bontemps, S.,et al. Herschel observations of embedded protostellar clusters in the Rosette molecular cloud[J]. ASTRONOMY & ASTROPHYSICS,2010,518. |
| APA | Hennemann, M..,Motte, F..,Bontemps, S..,Schneider, N..,Csengeri, T..,...&Woodcraft, A..(2010).Herschel observations of embedded protostellar clusters in the Rosette molecular cloud.ASTRONOMY & ASTROPHYSICS,518. |
| MLA | Hennemann, M.,et al."Herschel observations of embedded protostellar clusters in the Rosette molecular cloud".ASTRONOMY & ASTROPHYSICS 518(2010). |
入库方式： OAI收割
来源：国家天文台
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