太阳质量损失对地球轨道改变的长期影响的估计

Estimation for the Secular Influence of Solar Mass-Loss on the Change of the Orbit of the Earth

研究了太阳质量损失对地球轨道改变的长期影响。太阳质量损失包括太阳因光于辐射和太阳风流失两方面产生的质量损失。利用二体问题的中心体变质量的Jeans理论估计了太阳目前在主序阶段和将来后主序 (红巨星 )阶段由于上述两种机制造成的质量损失对地球轨道改变的长期效应。计算结果表明 :太阳质量损失在主序阶段对地球轨道改变的影响较小 ,但在后主序阶段对地球轨道改变的影响甚大 ,且此估计只是一种理论预测。

The author investigates the secular influence of solar mass-loss on the change of the orbit of the earth.The solar mass-loss is due to the photon radiation or nuclear buring and solar wind.The influences of solar mass-loss on the change rate of the semi-major axis and the orbital period of the earth could be happened while the Sun stays on the main-sequence and evolves as a red giant on the post-main sequence. This is estimated by using the central body as a variable mass in the problem of two bodies of the Jeanstheory. It is shown that the influence of solar mass-loss on the orbit of the earth at the post-main sequence is large than that at the main sequence.