Spin–Orbit Misalignments of Three Jovian Planets via Doppler Tomography

Spin–Orbit Misalignments of Three Jovian Planets via Doppler Tomography
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通过多普勒断层扫描观察三颗木星行星的自旋轨道错位

DOI:
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
D. Wright
D. Wright
中科院分区:
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文献类型:
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作者:
Marshall C. Johnson;W. Cochran;B. Addison;C. Tinney;D. Wright

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我们给出了热木星HAT-P-41b和WASP-79b以及对准的暖木星开普勒-448b的自旋-轨道失调的测量结果。我们用多普勒层析成像获得了这些测量结果,其中我们用光谱方法解决了凌日过程中由于Rossiter-McLaughlin效应引起的线轮廓微扰。我们分析了在HAT-P-41b的五次凌日过程中所获得的时间序列谱,并找到了自旋-轨道错位的值。我们重新分析了Addison等人在WASP-79b上获得的径向速度Rossiter-McLaughlin数据。使用多普勒层析成像方法。我们测量,与Addison等人发现的值一致,但比它更精确。对于开普勒-448b,我们对开普勒光曲线、多普勒层析数据和Lillo-Box等人的径向速度数据进行了联合拟合。我们发现了一个近似排列的轨道(),这与Bourrier等人发现的值一致。通过对开普勒光曲线的分析,我们测量了恒星的自转周期为几天,并以此论证了完整的三维自旋-轨道错位是很小的。
We present measurements of the spin–orbit misalignments of the hot Jupiters HAT-P-41 b and WASP-79 b, and the aligned warm Jupiter Kepler-448 b. We obtain these measurements with Doppler tomography, where we spectroscopically resolve the line profile perturbation during the transit due to the Rossiter–McLaughlin effect. We analyze time series spectra obtained during portions of five transits of HAT-P-41 b, and find a value of the spin–orbit misalignment of . We reanalyze the radial velocity Rossiter–McLaughlin data on WASP-79 b obtained by Addison et al. using Doppler tomographic methodology. We measure , consistent with but more precise than the value found by Addison et al. For Kepler-448 b we perform a joint fit to the Kepler light curve, Doppler tomographic data, and a radial velocity data set from Lillo-Box et al. We find an approximately aligned orbit ( ), in agreement with the value found by Bourrier et al. Through analysis of the Kepler light curve we measure a stellar rotation period of days, and use this to argue that the full three-dimensional spin–orbit misalignment is small, .
混沌恒星的形成以及恒星旋转与盘和行星轨道轴的对齐
DOI: 10.1111/j.1365-2966.2009.15773.x
发表时间: 2010
影响因子: 4.8
作者:
Bate M
通讯作者: Bate M
恒星活动会让行星看起来错位吗
DOI: 10.1051/0004-6361/201628728
发表时间: 2016
期刊: arXiv: Earth and Planetary Astrophysics
影响因子: --
作者:
M. Oshagh;S. Dreizler;N. C. Santos;P. Figueira;A. Reiners
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