【摘要】 双星轨道拟合是天文学的一项基础性研究工作。其主要目的是给出双星系统的二体轨道参数,这些参数不仅是高精度、高网格密度星表参考架的必要组成部分,而且也为理解各种有关观测现象提供了必要的动力学基础;更重要的是,双星轨道拟合可以直接估计恒星物理和星系天文学等领域极有应用价值的恒星质量参数。因此,长期以来双星轨道拟合工作一直受到研究者的广泛关注。近年来,随着高精度的恒星运动学观测资料的大量积累,双星轨道拟合更成为天体测量和天体力学的一个共同的热点课题,有关研究也有了长足的进展。综述了双星轨道拟合的历史及现状,其中着重介绍了目前所用的主要观测资料和各种具体的拟合模型、拟合方法;简要描述了几种主要的双星星表;展望了今后双星轨道拟合工作的发展趋势。更多还原

【Abstract】 The determination of the orbital parameters of binaries is an important constituent of fundamental astronomy. It can provide orbital parameters of component stars, which are necessary for a high-precision and dense catalog of stars. Also, it is the only reliable way of determining stellar masses, a crucial parameter for many astronomical researches. A large amount of high precision data about binaries has accumulated, and it is increasing rapidly these days. As a result, the determination of the orbital parameters of binaries is now a hot joint topic between astrometry and celestial mechanics. Historical background is briefly introduced, and recent progress is reviewed, including various kinds of observational data, theoretical models, fitting methods, and published and on-line results. Future perspective is also presented.更多还原