摘要
在以前研究的基础上继续研究了双星两子星的自转对轨道变化的后牛顿效应 .给出自转对轨道产生的长期摄动效应和周期摄动效应 .理论结果表明 ,两子星的自转对轨道半长轴、轨道偏心率、近星点角和平近点经度均产生周期摄动效应 ,但对前两个轨道根数不产生长期摄动效应 ,只对后两个轨道根数产生长期摄动效应 .并利用理论结果对 6颗双星系 :EKCep、GTCep、NYCep、V448Cyg ,V1 1 43Cyg和V45 1Oph中两子星的自转对轨道产生周期和长期摄动效应做了数值计算 ,数值结果显示 :对于两个质量较大快速自转的双星系 。
The author examined continuously the post Newtonian effects due to rotation of stars on the variation of the orbital elements for the component in binary system in PPN formalism .The secular and periodic perturbation effects are both given .The results show that there exist only the periodic variations in semimajor axis and eccentricity ,and exist the periodic and secular variations in longitude of periastron and mean anomaly of epoch. In addition, the author applied the obtained results to calculate the post Newtonian effects of rotation to six binary stars(EK Cep、GT Cep、NY Cep、V448 Cyg、V1143 Cyg、V451 Oph、)on the variation of the orbital elements of components and discussed.The numerical results are given in Tablel 3.It shows that the post Newtonian effect caused by the two rapid rotating massive components is not negligible.
出处
《天文学报》
CSCD
北大核心
2001年第4期428-435,共8页
Acta Astronomica Sinica
