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arXiv 1310.2133astro-ph.EP
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外行星transit巡天中的天体物理误报:为什么我们需要明亮的恒星?

Astrophysical false positives in exoplanet transit surveys: why do we need bright stars ?

A. Santerne, R. F. Díaz, J. -M. Almenara, A. Lethuillier, M. Deleuil, C. Moutou

摘要:

模拟行星凌日的天体物理误报是系外行星凌日调查的主要限制之一。在本程序中,我们回顾了交通调查中的假阳性问题以及可能的补充观察结果以限制其存在。我们还回顾了开普勒和CoRoT任务的假阳性率,并介绍了行星验证技术的基本知识。最后,我们讨论了观测明亮恒星的兴趣,就像PLATO 2.0和TESS在误报的背景下所做的那样。根据贝桑松星系模型的模拟,我们发现PLATO 2.0的背景误报率预计比开普勒更低,因此误报率甚至更低。

英文摘要:

Astrophysical false positives that mimic planetary transit are one of the main limitation to exoplanet transit surveys. In this proceeding, we review the issue of the false positive in transit survey and the possible complementary observations to constrain their presence. We also review the false-positive rate of both Kepler and CoRoT missions and present the basics of the planet-validation technique. Finally, we discuss the interest of observing bright stars, as PLATO 2.0 and TESS will do, in the context of the false positives. According to simulations with the Besançon galactic model, we find that PLATO 2.0 is expected to have less background false positives than Kepler, and thus an even lower false-positive rate.

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。

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