探测“温带”行星：在适居带寻找过境气巨行星的前景
Detecting "Temperate" Jupiters: The Prospects of Searching for Transiting Gas Giants in Habitability Zones
摘要：
本文研究了观测窗口对探测凌日行星的影响，通过计算在观测期间发生零次、一次（单次）、两次（双次）或$\ge$ 3次（多次）凌日的给定周期行星的比例。我们还调查了合作的影响，通过执行相同的计算，结合观测时间从两个宽场过境调查组。对于2004年观测季节的代表性领域，XO和SuperWASP在通过共享数据进行合作时，对于周期为14 < P < 150天的行星，单次和双次凌日事件增加了20-40%。对于XO项目，仅使用其数据，20-40%的周期为14-150天的行星应该至少被观察过一次。对于SuperWASP项目，50-90%的周期在14-150天之间的行星应该至少被观察过一次。如果XO和SuperWASP结合他们的观测，50-100%周期小于20天的行星应该被观测三次或更多次。我们发现，在一般宽场过境调查选择了适当的观测策略，以观察一个显着的比例过境巨行星的半长轴大于热木星政权。被探测到的中期凌日行星的实际数量取决于它们的真实半长轴分布和数据的信噪比。
英文摘要：
This paper investigates the effects of observing windows on detecting transiting planets by calculating the fraction of planets with a given period that have zero, one (single), two (double), or $\ge$3 (multiple) transits occurring while observations are being taken. We also investigate the effects of collaboration by performing the same calculations with combined observing times from two wide-field transit survey groups. For a representative field of the 2004 observing season, both XO and SuperWASP experienced an increase in single and double transit events by up to 20-40% for planets with periods 14 < P < 150 days when collaborating by sharing data. For the XO Project using its data alone, between 20-40% of planets with periods 14-150 days should have been observed at least once. For the SuperWASP Project, 50-90% of planets with periods between 14-150 days should have been observed at least once. If XO and SuperWASP combined their observations, 50-100% of planets with periods less than 20 days should be observed three or more times. We find that in general wide-field transit surveys have selected appropriate observing strategies to observe a significant fraction of transiting giant planets with semimajor axes larger than the Hot Jupiter regime. The actual number of intermediate-period transiting planets that are detected depends upon their true semimajor axis distribution and the signal-to-noise of the data.
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