Characterising the Atmospheres of Transiting Planets with a Dedicated Space Telescope
M. Tessenyi, M. Ollivier, G. Tinetti, J. P. Beaulieu, V. Coudé du Foresto, T. Encrenaz, G. Micela, B. Swinyard, I. Ribas, A. Aylward, J. Tennyson, M. R. Swain, … 展开作者
M. Tessenyi, M. Ollivier, G. Tinetti, J. P. Beaulieu, V. Coudé du Foresto, T. Encrenaz, G. Micela, B. Swinyard, I. Ribas, A. Aylward, J. Tennyson, M. R. Swain, A. Sozzetti, G. Vasisht, P. Deroo
Exoplanetary science is among the fastest evolving fields of today's astronomical research. Ground-based planet-hunting surveys alongside dedicated space missions (Kepler, CoRoT) are delivering an ever-increasing number of exoplanets, now numbering at ~690, with ESA's GAIA mission planned to bring this number into the thousands. The next logical step is the characterisation of these worlds: what is their nature? Why are they as they are? The use of the HST and Spitzer Space Telescope to probe the atmospheres of transiting hot, gaseous exoplanets has demonstrated that it is possible with current technology to address this ambitious goal. The measurements have also shown the difficulty of understanding the physics and chemistry of these environments when having to rely on a limited number of observations performed on a handful of objects. To progress substantially in this field, a dedicated facility for exoplanet characterization with an optimised instrument design (detector performance, photometric stability, etc.), able to observe through time and over a broad spectral range a statistically significant number of planets, will be essential. We analyse the performances of a 1.2/1.4m space telescope for exoplanet transit spectroscopy from the visible to the mid IR, and present the SNR ratio as function of integration time and stellar magnitude/spectral type for the acquisition of spectra of planetary atmospheres in a variety of scenarios: hot, warm, and temperate planets, orbiting stars ranging in spectral type from hot F to cool M dwarfs. We include key examples of known planets (e.g. HD 189733b, Cancri 55 e) and simulations of plausible terrestrial and gaseous planets, with a variety of thermodynamical conditions. We conclude that even most challenging targets, such as super-Earths in the habitable-zone of late-type stars, are within reach of a M-class, space-based spectroscopy mission.
Characterising transiting exoplanets at long orbital period: lessons learned for PLATO from 10 years of monitoring the HIP41378 system
Univ. Grenoble Alpes（格勒诺布尔阿尔卑斯大学）；CNRS（法国国家科学研究中心）；IPAG（天体物理学与行星学研究所）；Aix Marseille Univ（艾克斯-马赛大学）；CNES（法国国家空间研究中心）；LAM（拉奥朗实验室）；Department of Astronomy, University of Geneva（日内瓦大学天文系）
TRAPPIST: a robotic telescope dedicated to the study of planetary systems
我们在这里介绍一个新的机器人望远镜称为TRAPPIST（TRAnsiting Planets and PlanetesImals Small Telescope）。TRAPPIST配备了高质量的CCD相机，安装在0.6米的轻型光学管上，于2010年4月安装在ESO La Silla天文台（智利），现在正在开始其科学计划。TRAPPIST的科学目标是通过两种方法研究行星系：探测和研究系外行星以及研究彗星。我们在这里描述的项目目标，硬件，我们提出了一些在调试阶段获得的第一批成果。
The EXoplanet Climate Infrared TElescope (EXCITE): A balloon-borne mission to measure spectroscopic phase curves of transiting hot Jupiters
NASA Goddard Space Flight Center（美国宇航局戈达德太空飞行中心）；Brown University（布朗大学）；Arizona State University（亚利桑那州立大学）；La Sapienza Università di Roma（罗马第一大学）；Cornell University（康奈尔大学）；StarSpec Technologies Inc.（StarSpec科技有限公司）；Center for Space Sciences and Technology, University of Maryland, Baltimore County（马里兰大学巴尔的摩县分校空间科学与技术中心）
WATSON-Net: Vetting, Validation, and Analysis of Transits from Space Observations with Neural Networks
Dpto. Física Teórica y del Cosmos. Universidad de Granada（格拉纳达大学理论物理与宇宙学系）；AI Engineering, Avature, Spain（Avature人工智能工程）；CITIC-Research Center of Information and Communication Technologies, University of A Coruña（阿维拉大学信息与通信技术研究中心）；CIGUS CITIC - Department of Computer Science and Information Technologies, University of A Coruña（阿维拉大学CIGUS CITIC-计算机科学与信息科技系）
Optical and Opto-mechanical Analysis and Design of the Telescope for the Ariel Mission
大气遥感红外系外行星大型巡天（Ariel）是第一个专门测量数千颗过境系外行星的化学成分和热结构的空间任务。Ariel于2020年被欧空局“宇宙视野”计划采纳为M4任务，预计将于2029年发射。该飞行任务将从日地拉格朗日点L2运行。科学有效载荷由两个仪器组成：一个是1.95-7.8微米波段的高分辨率分光计，另一个是精密制导系统/可见光光度计/低分辨率近红外分光计。这些仪器由一个无遮挡的离轴卡塞格伦望远镜提供准直光束。仪器和望远镜将在低于50 K的温度下工作。望远镜反射镜和支撑结构将由航空级铝制成。考虑到主镜的大孔径（0.6 m $^2$），材料的选择需要仔细的光学和光学机械设计，以及镜基片热稳定、光学表面抛光和光学涂层三个领域的技术进步。本文介绍了作者在这些领域所做的工作，作为负责设计和制造望远镜和反射镜的团队成员，首先系统地审查了Ariel望远镜的光学和光学机械要求以及设计选择，在以前的开发工作和科学目标和任务要求的背景下。然后，审查进展与光机设计，检查最重要的选择，在结构和热设计方面，并与统计分析的变形的光学表面的望远镜反射镜和它们的对齐方面的刚体运动。然后详细介绍了热稳定、抛光和涂层的鉴定工作。
Exoplanet Search and Characterization with the Proposed POET Canadian Space Mission
The University of Western Ontario, Institute of Earth and Space Exploration（韦仕敦大学地球与太空探索研究所）；Bishop’s University（主教大学）；Centro de Astrobiología, CSIC-INTA（西班牙国家航空航天技术研究所/西班牙国家科学研究委员会天体生物学中心）；McMaster University（麦克马斯特大学）；National Research Council – Herzberg Astronomy and Astrophysics（国家研究委员会赫茨伯格天文学与天体物理学研究所）；The University of British Columbia（不列颠哥伦比亚大学）；Univertité de Montréal（蒙特利尔大学）；Mount Allison University（蒙蒂阿利森大学）；Royal Military College of Canada（加拿大皇家军事学院）；ABB Measurement and Analytics（ABB测量与分析）；SFL Missions Inc.（SFL任务公司）；Canadian Space Agency（加拿大航天局）
PlatoSim: An end-to-end PLATO camera simulator for modelling high-precision space-based photometry
KU Leuven（荷语鲁汶大学）；German Aerospace Center（德国航空航天中心）；Observatoire de Paris, Université PSL, Sorbonne Université, Université Paris Cité, CNRS（巴黎天文台、巴黎文理研究大学、索邦大学、巴黎西岱大学、法国国家科学研究中心）
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）
