THE ATMOSPHERIC CIRCULATION OF A NINE-HOT-JUPITER SAMPLE: PROBING CIRCULATION AND CHEMISTRY OVER A WIDE PHASE SPACE
THE ATMOSPHERIC CIRCULATION OF A NINE-HOT-JUPITER SAMPLE: PROBING CIRCULATION AND CHEMISTRY OVER A WIDE PHASE SPACE
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九热木星样本的大气环流：在宽相空间探测环流和化学
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
M. Marley
中科院分区：
文献类型：
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作者：
T. Kataria;D. Sing;N. Lewis;C. Visscher;A. Showman;J. Fortney;M. Marley
我们展示了使用哈勃和斯皮策太空望远镜对九颗热木星进行的大型透射光谱调查的大气环流研究结果。这些观测显示了可见光和红外波段的光谱行为，表明它们的大气中有不同的云和雾的特性。通过利用每个行星的特定系统参数，我们自然可以探测到行星半径、重力、轨道周期和平衡温度等广泛的相空间。首先，我们表明我们的模型“网格”恢复了热木星传统参数研究中显示的趋势，特别是赤道超旋转和昼夜温度的增加与平衡温度的增加形成对比。我们展示了空间温度变化，特别是在昼侧和夜侧以及西端和东端之间，可以变化数百开尔文，这可能意味着这些地区Na， K， CO和ch4丰度的巨大变化。这些化学变化可以大到足以在高分辨率光谱仪的传输中观察到，例如VLT上的ESPRESSO， E-ELT上的METIS，或JWST上的MIRI和NIRSpec。我们还将模型生成的理论发射光谱与每个行星的可用斯皮策日食深度进行了比较，发现我们的太阳金属丰度、无云模型的输出通常与许多数据集很好地匹配，即使没有额外的模型调整。虽然这些模型没有云，但我们可以利用它们的结果来理解驱动大气中云形成的化学和动力学。
We present results from an atmospheric circulation study of nine hot Jupiters that compose a large transmission spectral survey using the Hubble and Spitzer Space Telescopes. These observations exhibit a range of spectral behavior over optical and infrared wavelengths, suggesting diverse cloud and haze properties in their atmospheres. By utilizing the specific system parameters for each planet, we naturally probe a wide phase space in planet radius, gravity, orbital period, and equilibrium temperature. First, we show that our model “grid” recovers trends shown in traditional parametric studies of hot Jupiters, particularly equatorial superrotation and increased day–night temperature contrast with increasing equilibrium temperature. We show how spatial temperature variations, particularly between the dayside and nightside and west and east terminators, can vary by hundreds of kelvin, which could imply large variations in Na, K, CO and CH 4 abundances in those regions. These chemical variations can be large enough to be observed in transmission with high-resolution spectrographs, such as ESPRESSO on VLT, METIS on the E-ELT, or MIRI and NIRSpec aboard JWST. We also compare theoretical emission spectra generated from our models to available Spitzer eclipse depths for each planet and find that the outputs from our solar-metallicity, cloud-free models generally provide a good match to many of the data sets, even without additional model tuning. Although these models are cloud-free, we can use their results to understand the chemistry and dynamics that drive cloud formation in their atmospheres.
影响因子：
4.8
作者：
N. Nikolov;D. Sing;F. Pont;A. Burrows;J. Fortney;G. Ballester;T. Evans;C. Huitson;H. Wakeford;P. Wilson;S. Aigrain;D. Deming;N. Gibson;G. Henry;H. Knutson;A. D. Étangs;A. Showman;A. Vidal-Madjar;K. Zahnle
通讯作者：
N. Nikolov;D. Sing;F. Pont;A. Burrows;J. Fortney;G. Ballester;T. Evans;C. Huitson;H. Wakeford;P. Wilson;S. Aigrain;D. Deming;N. Gibson;G. Henry;H. Knutson;A. D. Étangs;A. Showman;A. Vidal-Madjar;K. Zahnle