Seismic study of solar convection and overshooting: results of nonlocal convection
文献类型：期刊论文
| 作者 | Zhang, Chun-Guang1,2; Deng, Li-Cai1; Xiong, Da-Run3 ; Christensen-Dalsgaard, Jorgen4
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2013-09-01 |
| 卷号 | 13期号:9页码:1127-1140 |
| 关键词 | convection Sun: interior Sun: helioseismology |
| ISSN号 | 1674-4527 |
| 通讯作者 | Zhang, CG (reprint author), Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China. Email: cgzhang@nao.cas.cn |
| 英文摘要 | Local mixing-length theory is incapable of describing nonlocal phenomena in stellar convection, such as overshooting. Therefore standard solar models constructed with local mixing-length theory significantly deviate from the Sun at the boundaries of the convection zone, where convection becomes less efficient and nonlocal effects are important. The differences between observed and computed frequencies mainly come from the region near the surface, while the localized difference in sound speed is just below the convective envelope. We compute a solar envelope model using Xiong's nonlocal convection theory, and carry out helioseismic analysis. The nonlocal model has a smooth transition at the base of the convection zone, as revealed by helioseismology. It reproduces solar frequencies more accurately, and reduces the localized difference in sound speed between the Sun and standard solar models. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | TURBULENT CONVECTION ; STELLAR CONVECTION ; MASSIVE STARS ; SOUND-SPEED ; ZONE ; OSCILLATIONS ; SIMULATIONS ; MODEL ; BASE ; ENVELOPE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000323757800011 |
| 公开日期 | 2015-04-20 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/11223]  |
| 专题 | 紫金山天文台_院士文集_熊大闰 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China 4.Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, DK-8000 Aarhus C, Denmark |
| 推荐引用方式 GB/T 7714 | Zhang, Chun-Guang,Deng, Li-Cai,Xiong, Da-Run,et al. Seismic study of solar convection and overshooting: results of nonlocal convection[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(9):1127-1140. |
| APA | Zhang, Chun-Guang,Deng, Li-Cai,Xiong, Da-Run,&Christensen-Dalsgaard, Jorgen.(2013).Seismic study of solar convection and overshooting: results of nonlocal convection.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(9),1127-1140. |
| MLA | Zhang, Chun-Guang,et al."Seismic study of solar convection and overshooting: results of nonlocal convection".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.9(2013):1127-1140. |
入库方式： OAI收割
来源：紫金山天文台
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