转动潮汐变形双星表面重力加速度的数值模拟

J4 ›› 2011, Vol. 46 ›› Issue (7): 43-47.

转动潮汐变形双星表面重力加速度的数值模拟

王靖洲^1,宋汉峰^1,2

1. 贵州大学理学院, 贵州贵阳 550025;
2. 中科院国家天文台-贵州大学天文联合研究中心, 贵州贵阳 550025

收稿日期:2011-02-28 出版日期:2011-07-20 发布日期:2011-09-08
作者简介:王靖洲(1972- ),男,硕士研究生,研究方向为天体物理.Email:wjz0856@sina.com
基金资助:
贵州省优秀科技教育人才省长专项资金项目(黔省专合字(2007)10号);贵州大学引进高层次人才基金项目(I065030);贵州省教育厅自然科学研究项目(黔教科2010002号)

The simulations of the gravitational accelerations in a rotational distorted binary system

WANG Jing-zhou ¹, SONG Han-feng^1,2

1.College of Science, Guizhou University, Guiyang 550025, Guizhou, China; 2. Joint Astronomy Research Centre of
National Astronomical ObservatoriesGuizhou University, Guizhou 550025, Guiyang, China

Received:2011-02-28 Online:2011-07-20 Published:2011-09-08

摘要/Abstract

摘要：

转动和潮汐效应是影响双星结构演化非常重要的物理因素。在转动双星系统中,根据考虑转动潮汐变形的高阶扰动势数值计算了主星表面的重力加速度的分布,并与洛希模型计算的表面重力加速度分布做了对比。结果发现:转动和潮汐对恒星表面的重力加速度的大小和分布有重要影响,采用本文中的初始参数进行演化计算,最大影响可达到10³～10⁴cm／s²。因此在讨论恒星结构和演化时,转动和潮汐变形是不可忽略的重要因素。

关键词: 恒星结构演化;转动效应;潮汐效应

Abstract:

Rotation and tide are two very important physical factors which affect the structure and evolution of the binary system. The distributions of the effective gravitational accelerations which are derived by the highorder perturbation potential have been simulated. The distribution is compared with the one which has been derived from the Roche model. The results show that the distortions of rotation and tide have a significant impact on the effective gravitational accelerations. The maximum can attain 10³～10⁴cm／s² with the initial parameters. Therefore, the distortions can not been neglected in discussing the structure and evolution of the close binary system.

Key words: stellar structure and evolution; rotation effect; tide effect

王靖洲1,宋汉峰1,2. 转动潮汐变形双星表面重力加速度的数值模拟[J]. J4, 2011, 46(7): 43-47.

WANG Jing-zhou 1, SONG Han-feng1,2. The simulations of the gravitational accelerations in a rotational distorted binary system[J]. J4, 2011, 46(7): 43-47.

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