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| 临边昏暗在恒星角直径测量中的影响 | |
| 引用本文： | 陈子栋,赵定烽,杭恒荣.临边昏暗在恒星角直径测量中的影响[J].空间科学学报,2000,20(4):303-309. |
| 作者姓名： | 陈子栋 赵定烽 杭恒荣 |
| 作者单位： | 1. 绍兴文理学院物理系 2. 浙江师范大学物理系 中国科学院紫金山天文台南京 210008 3. 中国科学院紫金山天文台南京 210008 |
| 摘 要： | 讨论了恒星临力昏暗在恒星角直径测量中的影响。研究表明，相对于二项式近似而言，ＵＤ模型和线性模型均对恒星角直径测量有所低估，在线性临力昏暗系数较小时，这种影最大，ＵＤ和一近似与二项式近似的差别最多分别达２５．５％和１２．６％；而在线性系数值趋近于１时，其相互差别随之可以忽略。而新旧线性临边近似之间对于恒星角直径测量的影响似乎并不很大。最后我们认为非线性临边昏暗效应的影响不可忽略。 |
| 关 键 词： | 恒星大气 恒星 角直径测量 临边昏暗 |
| 修稿时间： | 1999年9月28日 |
LIMB-DARKENING EFFECTS OF STELLAR ANGULAR DIAMETER MEASUREMENT |
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| ZHAO Dingfeng,HANG Hengrong,CHEN Zidong.LIMB-DARKENING EFFECTS OF STELLAR ANGULAR DIAMETER MEASUREMENT[J].Chinese Journal of Space Science,2000,20(4):303-309. | |
| Authors: | ZHAO Dingfeng HANG Hengrong CHEN Zidong |
| Abstract: | In this paper the influence of the limb-darkening effects on stellar angular diameter measurement were studied. It shows that both UD and linear results underestimate the value of angular diameter; the difference is larger at stronger limb-darkening effects (c0 - 0), the largest difference among UD, linear result and quadric approach are 25.5%, 12.6% respectively. While their differences can be ignored when co tended to one. However, the difference between new and old linear approach seems small, it thinks that the quadric limb-darkening effects should be considered in the measurement of the stellar angular diameter. |
| Keywords: | Stellar atmosphere Stellar limb-darkening approach Stellar angular diameter measurement |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
