Do protostellar fountains shape the regional core mass function?
文献类型：期刊论文
| 作者 | Li, Jin-Zeng1 ; Carlos Mallamaci, Claudio2; Cesar Podesta, Ricardo2; Actis Vicente, Eloy2; Huang, Ya-Fang1; Maria Pacheco, Ana2; Li Jinzeng; Huang Yafang
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2013-06-01 |
| 卷号 | 13期号:6页码:719-728 |
| 关键词 | stars: formation stars: individual (AFGL 961) stars: circumstellar matter stars: mass function |
| 英文摘要 | The emerging massive binary system associated with AFGL 961 signifies the latest generation of massive star and cluster formation in the Rosette Molecular Complex. We present the detection of a compact cluster of dusty cores toward the AFGL 961 region based on continuum imaging at 1.3 mm by the Submillimeter Array. The binary components of AFGL 961 are associated with the most intensive millimeter emission cores or envelopes, confirming that they are indeed in an early stage of evolution. The other massive cores, however, are found to congregate in the close vicinity of the central high-mass protostellar binary. They have no apparent infrared counterparts and are, in particular, well aligned transverse to the bipolar molecular outflows originating from AFGL 961. This provides evidence for a likely triggered origin of the massive cores. All 40 individual cores with masses ranging between 0.6 and 15 M-circle dot were detected above a 3 sigma level of 3.6 mJy beam(-1) (or 0.4 M-circle dot), based on which we derive a total core mass of 107 M-circle dot in the AFGL 961 region. As compared to the stellar initial mass function, a shallow slope of 1.8 is, however, derived from the best fit to the mass spectrum of the millimeter cores with a prestellar and/or protostellar origin. The flatter core mass distribution in the AFGL 961 region is attributed here to dynamic perturbations from the massive molecular outflows that originated from the massive protostellar binary, which may have altered the otherwise more quiescent conditions of core or star formation, enhanced the formation of more massive cores and, as a result, influenced the core mass distribution in its close vicinity. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000319704300011 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5835]  |
| 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.Univ Nacl San Juan Argentina, Observ Astron Felix Aguilar, Chimbas San Juan, Argentina |
| 推荐引用方式 GB/T 7714 | Li, Jin-Zeng,Carlos Mallamaci, Claudio,Cesar Podesta, Ricardo,et al. Do protostellar fountains shape the regional core mass function?[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(6):719-728. |
| APA | Li, Jin-Zeng.,Carlos Mallamaci, Claudio.,Cesar Podesta, Ricardo.,Actis Vicente, Eloy.,Huang, Ya-Fang.,...&Huang Yafang.(2013).Do protostellar fountains shape the regional core mass function?.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(6),719-728. |
| MLA | Li, Jin-Zeng,et al."Do protostellar fountains shape the regional core mass function?".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.6(2013):719-728. |
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来源：国家天文台
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