Refining Exoplanet Ephemerides and Transit Observing Strategies
Refining Exoplanet Ephemerides and Transit Observing Strategies
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完善系外行星星历和凌日观测策略
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
D. Ciardi
中科院分区：
文献类型：
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作者：
S. Kane;S. Mahadevan;K. von Braun;G. Laughlin;D. Ciardi
凌日行星的发现产生了太多关于太阳系外行星内部结构和大气的信息。由于几何凌日概率固有的偏差，这些发现仅限于近星距离较低的区域。在预测的凌日时间监测已知的径向速度行星是一种被证明是探测凌日的方法，并提供了一种在周期/近星空间的新区域探索系外行星质量-半径关系的途径。在这里，我们描述了已知径向速度行星的过境窗口计算，改进其过境星历的技术，目标选择标准，以及获得最大过境窗口覆盖率的观测方法。这些方法目前正由过境星历改进和监测调查(TERMS)实施。
Transiting planet discoveries have yielded a plethora of information regarding the internal structure and atmospheres of extrasolar planets. These discoveries have been restricted to the low-periastron distance regime due to the bias inherent in the geometric transit probability. Monitoring known radial velocity planets at predicted transit times is a proven method of detecting transits, and presents an avenue through which to explore the mass-radius relationship of exoplanets in new regions of period/periastron space. Here we describe transit window calculations for known radial velocity planets, techniques for refining their transit ephemerides, target selection criteria, and observational methods for obtaining maximum coverage of transit windows. These methods are currently being implemented by the Transit Ephemeris Refinement and Monitoring Survey (TERMS).