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EVOLUTION OF GASEOUS DISK VISCOSITY DRIVEN BY SUPERNOVA EXPLOSIONS IN STAR-FORMING GALAXIES AT HIGH REDSHIFT
Wang JM(王建民); Yan CS(闫昌硕); Li YR(李彦荣); Chen YM(陈燕梅); Xiang F(向飞); Hu C(胡晨); Ge JQ(葛均强); Zhang S(张澍); Wang, JM; Yan, CS; Li, YR; Chen, YM; Xiang, F; Hu, C; Ge, JQ; Zhang, S
2009
发表期刊ASTROPHYSICAL JOURNAL LETTERS
卷号701期号:1页码:L7-L11
通讯作者[Wang, Jian-Min ; Yan, Chang-Shuo ; Li, Yan-Rong ; Chen, Yan-Mei ; Xiang, Fei ; Hu, Chen ; Ge, Jun-Qiang ; Zhang, Shu] Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; [Wang, Jian-Min] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China ; [Yan, Chang-Shuo ; Li, Yan-Rong ; Chen, Yan-Mei ; Ge, Jun-Qiang] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
文章类型Article
摘要Motivated by Genzel et al.'s observations of high-redshift star-forming galaxies, containing clumpy and turbulent rings or disks, we build a set of equations describing the dynamical evolution of gaseous disks with inclusion of star formation and its feedback. Transport of angular momentum is due to "turbulent" viscosity induced by supernova explosions in the star formation region. Analytical solutions of the equations are found for the initial cases of a gaseous ring and the integrated form for a gaseous disk, respectively. For a ring with enough low viscosity, it evolves in a slow process of gaseous diffusion and star formation near the initial radius. For a high viscosity, the ring rapidly diffuses in the early phase. The diffusion drives the ring into a region with a low viscosity and starts the second phase undergoing pile-up of gas at a radius following the decreased viscosity torque. The third is a sharply decreasing phase because of star formation consumption of gas and efficient transportation of gas inward forming a stellar disk. We apply the model to two z similar to 2 galaxies BX 482 and BzK 6004, and find that they are undergoing a decline in their star formation activity.
关键词galaxies: evolution galaxies: high-redshift
学科领域Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
DOI10.1088/0004-637X/701/1/L7
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000268340600002
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240291
专题粒子天体物理中心
实验物理中心
作者单位中国科学院高能物理研究所
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Wang JM,Yan CS,Li YR,et al. EVOLUTION OF GASEOUS DISK VISCOSITY DRIVEN BY SUPERNOVA EXPLOSIONS IN STAR-FORMING GALAXIES AT HIGH REDSHIFT[J]. ASTROPHYSICAL JOURNAL LETTERS,2009,701(1):L7-L11.
APA 王建民.,闫昌硕.,李彦荣.,陈燕梅.,向飞.,...&Zhang, S.(2009).EVOLUTION OF GASEOUS DISK VISCOSITY DRIVEN BY SUPERNOVA EXPLOSIONS IN STAR-FORMING GALAXIES AT HIGH REDSHIFT.ASTROPHYSICAL JOURNAL LETTERS,701(1),L7-L11.
MLA 王建民,et al."EVOLUTION OF GASEOUS DISK VISCOSITY DRIVEN BY SUPERNOVA EXPLOSIONS IN STAR-FORMING GALAXIES AT HIGH REDSHIFT".ASTROPHYSICAL JOURNAL LETTERS 701.1(2009):L7-L11.
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