论文标题
热木星及其主人明星的气氛的研究
The Study of Atmosphere of Hot Jupiters and Their Host Stars
论文作者
论文摘要
使得超球星大气的研究如此之坚硬的原因是从观察结果中提取了微小的信号，通常由畸形吸收，出色的光谱和仪器噪声主导。高分辨率光谱法已经成为检测原子和分子物种的领先技术之一（Birkby 2018），但尽管它尤其强大，但它尤其强大，可抵抗地球大气中的污染物吸收，但在非态度的恒星频谱中，以噪音为众所周知的频道的形式 - 在噪音中造成了噪音 - 造成噪音的形式 - 造成了噪音的造成频道的造成频道，这是众所周知的造成的，即众所周知的造成频道的造成频道，这是造成的，它是造成的，它是众所周知的造成的频谱，即造成了噪音的造成频谱，而造成了众多的频谱。检测。最近，通过使用3D的辐射流体动力学（RHD）模拟为星球和全球循环模型（GCM）实现了显着改善（例如，Chiavassa＆Brogi 2019，Flowers等人，2019年）。但是，到目前为止，已经对这些数值模拟进行了独立计算，而获得的光谱是沿着行星轨道的每个阶段自然耦合的结果。在我们的工作中，我们旨在生成G，F和K型星和热木星的发射光谱，并在轨道的任何阶段将它们耦合。对于那些在光谱的同一区域中存在的分子（例如，CO）和形成的分子，预期这种方法尤其有利，从而导致混合和重叠的光谱线。我们还介绍了在最近升级的光谱仪Crires+的K波段中观察到的热土星WASP-20b的传输光谱分析，该分辨率在仪器的科学验证的第一个晚上，以〜92，000的分辨率〜92，000，这导致了H2O的暂定检测。
What makes the study of exoplanetary atmospheres so hard is the extraction of its tiny signal from observations, usually dominated by telluric absorption, stellar spectrum and instrumental noise. The High Resolution Spectroscopy has emerged as one of the leading techniques for detecting atomic and molecular species (Birkby 2018), but although it is particularly robust against contaminant absorption in the Earth's atmosphere, the non-stationary stellar spectrum -- in the form of either Doppler shift or distortion of the line profile during planetary transits -- creates a non-negligible source of noise that can alter or even prevent the detection. Recently, significant improvements have been achieved by using 3D, radiative hydrodynamical (RHD) simulations for the star and Global Circulation Models (GCM) for the planet (e.g., Chiavassa & Brogi 2019, Flowers et al. 2019). However, these numerical simulations have been computed independently so far, while acquired spectra are the result of the natural coupling at each phase along the planet orbit. With our work, we aim at generating emission spectra of G,F, and K-type stars and Hot Jupiters and coupling them at any phase of the orbit. This approach is expected to be particularly advantageous for those molecules that are present in both the atmospheres (e.g., CO) and form in the same region of the spectrum, resulting in mixed and overlapped spectral lines. We also present the analysis of transmission spectra of the Hot Saturn WASP-20b, observed in the K-band of the recently upgraded spectrograph CRIRES+ at a resolution ~92, 000 during the first night of the Science Verification of the instrument and that led to a tentative detection of H2O.
