arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1608.00784astro-ph.EP
收藏

日食时间变化,以检测二进制系统中可能的特洛伊行星

Eclipse timing variations to detect possible Trojan planets in binary systems

R. Schwarz, Á. Bazsó, B. Funk, R. Zechner

摘要:

本文研究了利用食时变化探测近距离双星系统中特洛伊行星的有利条件。为了确定地面望远镜和太空望远镜(如以前的任务CoRoT和开普勒以及未来的太空任务如柏拉图,苔丝和基奥普斯)检测到这种变化的概率,我们研究了具有蝌蚪运动行星的双星系统的动力学。我们采用完整的三体问题作为动力学模型进行了数值模拟。通过计算不同质量的次级恒星和特洛伊行星的稳定性/ETV图,研究了稳定性和ETV。此外,我们改变了可能的特洛伊行星的偏心率。借助天平动振幅$σ$,我们可以表明是否所有稳定的物体都在蝌蚪轨道上运动。我们可以得出结论,许多ETV的振幅大到足以检测双星系统中的类地特洛伊行星。作为申请,我们准备了一份可能的候选人名单。

英文摘要:

This paper is devoted to study the circumstances favourable to detect Trojan planets in close binary-star-systems by the help of eclipse timing variations (ETVs). To determine the probability of the detection of such variations with ground based telescopes and space telescopes (like former missions CoRoT and Kepler and future space missions like Plato, Tess and Cheops), we investigated the dynamics of binary star systems with a planet in tadpole motion. We did numerical simulations by using the full three-body problem as dynamical model. The stability and the ETVs are investigated by computing stability/ETV maps for different masses of the secondary star and the Trojan planet. In addition we changed the eccentricity of the possible Trojan planet. By the help of the libration amplitude $σ$ we could show whether or not all stable objects are moving in tadpole orbits. We can conclude that many amplitudes of ETVs are large enough to detect Earth-like Trojan planets in binary star systems. As an application, we prepared a list of possible candidates.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑