论文标题
外部hat-p-p-12b的非鼻腔传输时间变化
Non-Sinusoidal Transit Timing Variations for the Exoplanet HAT-P-12b
论文作者
论文摘要
考虑到调查过境系外行星的过境时机变化（TTV）的重要性，我们提出了HAT-P-12B的后续研究。我们包括2011年至2015年之间从三个不同的观测值观察到的六个新的光曲线，以及从已发表的文献中获得的25个光曲线。因此，所使用的数据样本涵盖了大约10.2年的时间跨度，范围很大的时期（1160）用于外部hat hat-p-p-12b的过境事件。光曲线用于确定轨道参数，并对可能的过境时间变化进行研究。新的线性象征性的卡方= 7.93的价值很大，使用来自期刊图的突出频率的正弦曲线拟合显示了左右4。根据这些值和相应的O-C图，我们怀疑存在该星球上可能的非鼻孔TTV的情况。最后，我们发现具有额外非传输系外行星的场景可以解释该TTV，其降低的卡方值较小，约为2。
Considering the importance of investigating the transit timing variations (TTVs) of transiting exoplanets, we present a follow-up study of HAT-P-12b. We include six new light curves observed between 2011 and 2015 from three different observatories, in association with 25 light curves taken from the published literature. The sample of the data used, thus covers a time span of about 10.2 years with a large coverage of epochs (1160) for the transiting events of the exoplanet HAT-P-12b. The light curves are used to determine the orbital parameters and conduct an investigation of possible transit timing variations. The new linear ephemeris shows a large value of reduced chi-square = 7.93, and the sinusoidal fitting using the prominent frequency coming from a periodogram shows a reduced chi-square around 4. Based on these values and the corresponding O-C diagrams, we suspect the presence of a possible non-sinusoidal TTV in this planetary system. Finally, we find that a scenario with an additional non-transiting exoplanet could explain this TTV with an even smaller reduced chi-square value of around 2.
