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题名: OUTFLOWS AND BUBBLES IN TAURUS: STAR-FORMATION FEEDBACK SUFFICIENT TO MAINTAIN TURBULENCE
作者: Li, Huixian1, 2, 3; Li, Di1, 2, 4; Qian, Lei1, 2; Xu, Duo1, 3, 5; Goldsmith, Paul F.6; Noriega-Crespo, Alberto7, 8; Wu, Yuefang9; Song, Yuzhe5; Nan, Rendong1, 2
刊名: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期: 2015-08-01
卷号: 219, 期号:2
关键词: ISM: bubbles ; ISM: individual objects (Taurus) ; ISM: jets and outflows ; ISM: kinematics and dynamics ; surveys ; turbulence
DOI: 10.1088/0067-0049/219/2/20
文章类型: Article
英文摘要: We have identified outflows and bubbles in the Taurus molecular cloud based on the similar to 100 deg(2) Five College Radio Astronomy Observatory (CO)-C-12(1-0) and (CO)-C-13(1-0) maps and the Spitzer young stellar object catalogs. In the main 44 deg(2) area of Taurus, we found 55 outflows, of which 31 were previously unknown. We also found 37 bubbles in the entire 100 deg(2) area of Taurus, none of which had been found previously. The total kinetic energy of the identified outflows is estimated to be similar to 3.9 x 10(45) erg, which is 1% of the cloud turbulent energy. The total kinetic energy of the detected bubbles is estimated to be similar to 9.2 x 10(46) erg, which is 29% of the turbulent energy of Taurus. The energy injection rate from the outflows is similar to 1.3 x 10(33) erg s(-1), which is 0.4-2 times the dissipation rate of the cloud turbulence. The energy injection rate from bubbles is similar to 6.4 x 10(33) erg s(-1), which is 2-10 times the turbulent dissipation rate of the cloud. The gravitational binding energy of the cloud is similar to 1.5 x 10(48) erg, that is, 385 and 16 times the energy of outflows and bubbles, respectively. We conclude that neither outflows nor bubbles can provide sufficient energy to balance the overall gravitational binding energy and the turbulent energy of Taurus. However, in the current epoch, stellar feedback is sufficient to maintain the observed turbulence in Taurus.
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Astronomy & Astrophysics
研究领域[WOS]: Astronomy & Astrophysics
关键词[WOS]: VELOCITY MOLECULAR GAS ; YOUNG STELLAR OBJECTS ; SCALE STRUCTURE ; GALACTIC DISK ; DENSE CORES ; CLOUD CORE ; DRIVEN ; CANDIDATES ; PERSEUS ; PROTOSTARS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000361876600006
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/16025
Appears in Collections:太阳活动的多波段观测研究团组_期刊论文

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作者单位: 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Space Sci Inst, Boulder, CO USA
5.Nanjing Univ, Nanjing 210093, Jiangsu, Peoples R China
6.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
7.CALTECH, IPAC, Pasadena, CA 91125 USA
8.Space Telescope Sci Inst, JWST, Baltimore, MD 21218 USA
9.Peking Univ, Dept Astron, Beijing 100871, Peoples R China
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