A fast ellipsoid model for asteroids inverted from lightcurves
文献类型：期刊论文
| 作者 | Lu, Xiao-Ping1; Zhao, Hai-Bin2 ; You, Zhong1
|
| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2013-04-01 |
| 卷号 | 13期号:4页码:471-478 |
| 关键词 | ellipsoid model lightcurves photometric shape: asteroids |
| ISSN号 | 1674-4527 |
| 通讯作者 | Lu, XP (reprint author), Macau Univ Sci & Technol, Fac Informat Technol, Ave Wai Long, Taipa, Macau, Peoples R China. Email: xplu@must.edu.mo |
| 英文摘要 | Research about asteroids has recently attracted more and more attention, especially focusing on their physical structures, such as their spin axis, rotation period and shape. The long distance between observers on Earth and asteroids makes it impossible to directly calculate the shape and other parameters of asteroids, with the exception of Near Earth Asteroids and others that have passed by some space-crafts. Photometric measurements are still generally the main way to obtain research data on asteroids, i.e. the lightcurves recording the brightness and positions of asteroids. Supposing that the shape of the asteroid is a triaxial ellipsoid with a stable spin, a new method is presented in this article to reconstruct the shape models of asteroids from the lightcurves, together with other physical parameters. By applying a special curvature function, the method calculates the brightness integration on a unit sphere and Lebedev quadrature is employed for the discretization. Finally, the method searches for the optimal solution by the Levenberg-Marquardt algorithm to minimize the residual of the brightness. By adopting this method, not only can related physical parameters of asteroids be obtained at a reasonable accuracy, but also a simple shape model of an ellipsoid can be generated for reconstructing a more sophisticated shape model. |
| 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] | ATMOSPHERELESS BODIES ; BRIGHTNESS VARIATIONS ; RADIATIVE-TRANSFER ; PHASE CURVES ; INVERSION ; SURFACES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000316788000008 |
| 公开日期 | 2014-01-08 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/9930]  |
| 专题 | 紫金山天文台_盱眙天文观测站 |
| 作者单位 | 1.Macau Univ Sci & Technol, Fac Informat Technol, Taipa, Macau, Peoples R China 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Xiao-Ping,Zhao, Hai-Bin,You, Zhong. A fast ellipsoid model for asteroids inverted from lightcurves[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2013,13(4):471-478. |
| APA | Lu, Xiao-Ping,Zhao, Hai-Bin,&You, Zhong.(2013).A fast ellipsoid model for asteroids inverted from lightcurves.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,13(4),471-478. |
| MLA | Lu, Xiao-Ping,et al."A fast ellipsoid model for asteroids inverted from lightcurves".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 13.4(2013):471-478. |
入库方式： OAI收割
来源：紫金山天文台
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