Characterising exoplanets and their environment with UV transmission spectroscopy
L. Fossati, V. Bourrier, D. Ehrenreich, C. A. Haswell, K. G. Kislyakova, H. Lammer, A. Lecavelier des Etangs, Y. Alibert, T. R. Ayres, G. E. Ballester, J. Barne… 展开作者
L. Fossati, V. Bourrier, D. Ehrenreich, C. A. Haswell, K. G. Kislyakova, H. Lammer, A. Lecavelier des Etangs, Y. Alibert, T. R. Ayres, G. E. Ballester, J. Barnes, D. V. Bisikalo, A. Collier, Cameron, S. Czesla, J. -M. Desert, K. France, M. Guedel, E. Guenther, Ch. Helling, K. Heng, M. Homstrom, L. Kaltenegger, T. Koskinen, A. F. Lanza, J. L. Linsky, C. Mordasini, I. Pagano, D. Pollacco, H. Rauer, A. Reiners, M. Salz, P. C. Schneider, V. I. Shematovich, D. Staab, A. A. Vidotto, P. J. Wheatley, B. E. Wood, R. V. Yelle
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White paper submitted to STScI for Hubble's 2020 vision
Exoplanet science is now in its full expansion, particularly after the CoRoT and Kepler space missions that led us to the discovery of thousands of extra-solar planets. The last decade has taught us that UV observations play a major role in advancing our understanding of planets and of their host stars, but the necessary UV observations can be carried out only by HST, and this is going to be the case for many years to come. It is therefore crucial to build a treasury data archive of UV exoplanet observations formed by a dozen "golden systems" for which observations will be available from the UV to the infrared. Only in this way we will be able to fully exploit JWST observations for exoplanet science, one of the key JWST science case.
Discovering and Characterising Exoplanets and Ultracool Dwarfs with the Square Kilometre Array
University of Amsterdam（阿姆斯特丹大学）；ASTRON, The Netherlands Institute for Radio Astronomy（荷兰射电天文研究所）；Observatoire de Paris（巴黎天文台）；National Astronomical Observatory of Japan（日本国立天文台）；University of Tokyo（东京大学）；California Institute of Technology（加州理工学院）；University of Colorado Boulder（科罗拉多大学博尔德分校）；University of Groningen（格罗宁根大学）
Theoretical transmission spectra of exoplanet atmospheres with hydrocarbon haze: Effect of creation, growth, and settling of haze particles. I. Model description and first results
Theoretical Transmission Spectra of Exoplanet Atmospheres with Hydrocarbon Haze. II. Dependence on UV Irradiation Intensity, Metallicity, C/O Ratio, Eddy Diffusion Coefficient, and Temperature
Implementation of disequilibrium chemistry to spectral retrieval code ARCiS and application to sixteen exoplanet transmission spectra: Indication of disequilibrium chemistry for HD 209458b and WASP-39b
The effects of stellar activity on optical high-resolution exoplanet transmission spectra
色球敏感的原子线显示不同的光谱在恒星活动区，斑点，和光球，提高的可能性，系外行星传输光谱被污染的恒星盘的各个部分之间的对比。为了探索这种效应，我们对G型和K型恒星进行了凌日模拟，其谱线分别为Ca II K 3933、Na I 5890、H I 6563（H $α$）和He I 10830。我们发现，强的光斑发射和大的覆盖率可以贡献一个不可忽略的量的透射光谱，特别是对于H $α$，钙II K，和钠I D，而斑点和细丝是相对不重要的。污染的量强烈地依赖于有源区的位置和本征发射强度。特别地，活动区域必须沿着运输弦集中，以便产生一致的运输中信号。例如，在活跃纬度的凌日过程中，Na I和H $α$的平均吸收特征可以分别达到$\approx 0.2\%$和$0.3\%$，其线发射强度与中等强度的太阳耀斑相似。像HD 189733这样经过活跃恒星的行星，其透射光谱很可能受到对比度效应的影响，尽管活动区几何形状和发射强度的严格限制使得一致的过境特征不太可能完全归因于对比度效应。He I 10830的影响并不强烈，吸收信号可能被恒星活动稀释，而不是增强。因此，He I 10830应该被认为是探测扩展大气层的优先目标，即使是在活跃恒星的情况下。
The MUSCLES Extension for Atmospheric Transmission Spectroscopy: Spectral energy distributions for 20 exoplanet host stars that JWST observed in Cycle 1
University of Colorado（科罗拉多大学）；NASA Goddard Space Flight Center（美国宇航局戈达德太空飞行中心）；Vanderbilt University（范德堡大学）；Hamburger Sternwarte（汉堡天文台）；University of Texas, Austin（德克萨斯大学奥斯汀分校）；Southwest Research Institute（西南研究院）
Astrometric planet search around southern ultracool dwarfs: V. Discovery of the exoplanet candidate PALTA-1 b
European Space Agency（欧洲空间局）；Main Astronomical Observatory, National Academy of Sciences of the Ukraine（乌克兰国家科学院主天文台）；Instituto de Astrofísica de Canarias（加那利群岛天体物理研究所）；Université de Genève（日内瓦大学）
NASA's Pandora SmallSat Mission: Simulated Modeling and Retrieval of Near-Infrared Exoplanet Transmission Spectra
Space Science Institute（空间科学研究所）；Lawrence Livermore National Laboratory（劳伦斯利弗莫尔国家实验室）；School of Earth and Space Exploration, Arizona State University（亚利桑那州立大学地球与空间探索学院）；Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology（麻省理工学院地球、大气与行星科学系）；Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology（麻省理工学院卡弗里天体物理与空间研究研究所）；NASA Goddard Space Flight Center（美国宇航局戈达德太空飞行中心）；Steward Observatory, The University of Arizona（亚利桑那大学斯图尔德天文台）；Lunar and Planetary Laboratory, The University of Arizona（亚利桑那大学月球与行星实验室）
The Effect of Stellar Contamination on Low-resolution Transmission Spectroscopy: Needs Identified by NASA's Exoplanet Exploration Program Study Analysis Group 21
