Transiting Exoplanet Monitoring Project (TEMP). III. On the Relocation of the Kepler-9 b Transit
Transiting Exoplanet Monitoring Project (TEMP). III. On the Relocation of the Kepler-9 b Transit
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凌日系外行星监测项目（TEMP）。
DOI：
10.3847/1538-3881/aaa253
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发表时间：
2017-12
影响因子：
5.3
通讯作者：
Wang Wei
中科院分区：
文献类型：
--
作者：
Wang Songhu;Wu Dong-Hong;Addison Brett C.;Laughlin Gregory;Liu Hui-Gen;Wang Yong-Hao;Yang Taozhi;Yang Ming;Yisik;eer Abudusaimaitijiang;Hong Renquan;Li Bin;Liu Jinzhong;Zhao Haibin;Wu Zhen-Yu;Hu Shao-Ming;Zhou Xu;Zhou Ji-Lin;Zhang Hui;Zheng Jie;Wang Wei
开普勒-9系统拥有三颗已知的凌日行星。由于若干原因，该系统具有重大意义。首先，外两颗行星的周期比接近2：1的轨道可调性，并伴随着动力学后果。其次，这两颗行星都位于行星质量的“沙漠”中，这通常与核心吸积过程的快速气体凝聚阶段有关。第三，精确测量天空投射的恒星自旋轨道角以及系统中行星之间的相互轨道倾角存在着诱人的前景。在2010年开普勒探测器首次宣布之后，由于发现该系统所依赖的观测时间基线有限，最初报告的开普勒-9 B和C的轨道星历已经显著退化。在这里，我们报告新的地面光度观测和广泛的动力学模型的系统。这些努力使我们能够在光度上恢复开普勒-9 B的凌日，从而大大提高了对即将到来的凌日中期的预测。该系统的精确星历是重要的，以便有信心地安排后续观测该系统，在过境多普勒测量以及过境期间采取的大气传输光谱。
The Kepler-9 system harbors three known transiting planets. The system holds significant interest for several reasons. First, the outer two planets exhibit a period ratio that is close to a 2:1 orbital commensurability, with attendant dynamical consequences. Second, both planets lie in the planetary mass “desert” that is generally associated with the rapid gas agglomeration phase of the core accretion process. Third, there exist attractive prospects for accurately measuring both the sky-projected stellar spin–orbit angles as well as the mutual orbital inclination between the planets in the system. Following the original Kepler detection announcement in 2010, the initially reported orbital ephemerides for Kepler-9 b and c have degraded significantly, due to the limited time base-line of observations on which the discovery of the system rested. Here, we report new ground-based photometric observations and extensive dynamical modeling of the system. These efforts allow us to photometrically recover the transit of Kepler-9 b and thereby greatly improve the predictions for upcoming transit mid-times. Accurate ephemerides of this system are important in order to confidently schedule follow-up observations of this system, for both in-transit Doppler measurements as well as for atmospheric transmission spectra taken during transit.
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10.1002/9781119581161.ch1
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影响因子：
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影响因子：
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10.3847/1538-3881/aa80e7
发表时间：
2017-03
期刊：
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影响因子：
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10.3847/0004-637x/823/1/29
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