Efficient Follow-up of Exoplanet Transits Using Small Telescopes

Efficient Follow-up of Exoplanet Transits Using Small Telescopes
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使用小型望远镜有效跟踪系外行星凌日

DOI:
10.1088/1538-3873/ab1eb4
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发表时间:
2019
影响因子:
3.5
通讯作者:
Beck P
Beck P
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Beck P

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在这里,我们介绍了一个用于预测系外行星凌日光曲线的在线工具。在良好的天气条件下,当一颗明亮的恒星和一颗大型凌日系外行星结合在一起时,小型望远镜可以很容易地捕捉到系外行星的凌日现象。然而,在现实中,需要考虑许多因素才能获得有用的测量结果。本文和随附的网站提出了一个基于时间序列差分光度法的程序,该程序已成功地使用0.4 m口径的望远镜来预测整个光曲线的预期精度。这使得我们能够进行稳健的规划,以决定是否应该尝试观测某颗系外行星凌日,特别是能够很容易地看到何时不应该尝试。这可能导致非专业人员捕捉到的凌日观测数量显著增加。该技术和网站也适用于规划各种变星观测,在这些观测中可以做出光曲线的预测。
Here, we introduce an online tool for the prediction of exoplanet transit light curves. Small telescopes can readily capture exoplanet transits under good weather conditions when the combination of a bright star and a large transiting exoplanet results in a significant depth of transit. However, in reality there are many considerations that need to be made to obtain useful measurements. This paper and the accompanying website lay out a procedure based on timeseries differential photometry that has been successfully employed using 0.4 m aperture telescopes to predict the expected precision for a whole light curve. This enables robust planning to decide whether the observation of a particular exoplanet transit should be attempted, and in particular to be able to readily see when it should not to be attempted. This may result in a significant increase in the number of transit observations captured by non-specialists. The technique and website are also appropriate for planning a variety of variable star observations where a prediction of the light curve can be made.
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