CHEOPS 任务
天体物理仪器与方法
2020-11-18 v1 地球与行星天体物理
摘要
系外行星特征卫星（CHEOPS）于 2012 年入选，作为 ESA 科学计划中的首个小型任务，并于 2019 年 12 月成功发射。CHEOPS 是 ESA 与瑞士的合作关系，并有十个额外 ESA 成员国的重大贡献。CHEOPS 是首个致力于利用超高精度测光在已知拥有行星的亮星上搜寻系外行星凌星的 mission。作为一颗后随任务，CHEOPS 主要致力于在可能时改进现有半径测量，或为由地基光谱巡天已估计质量的那部分行星提供首次精确测量，并跟踪相位曲线。CHEOPS 将为未来光谱大气表征提供首要目标。已针对 V 波段星等 6 至 12 的恒星导出测光精度与稳定性需求。特别地，CHEOPS 应能通过达到 6 小时积分内 20 ppm 的测光精度，探测到星等 6 至 9 范围内 G5 矮星上凌星的地球大小行星。对于星等 9 至 12 的 K 星，CHEOPS 应能通过达到 3 小时积分内 85 ppm 的测光精度探测凌星的海王星大小行星。这是通过在一台口径 33.5 cm 望远镜的焦平面组件上使用单一、帧转移、背照 CCD 探测器实现的。该 280 kg 航天器的指向精度约为 1 arcsec rms，并运行于 700 km 高度的太阳同步晨昏轨道。标称任务寿命为 3.5 年。在此期间，20% 的观测时间通过年度征集与由 ESA 管理的自由支配时间计划向学界开放。
引用
@article{arxiv.2009.11633,
title = {The CHEOPS mission},
author = {Willy Benz and Christopher Broeg and Andrea Fortier and Nicola Rando and Thomas Beck and Mathias Beck and Didier Queloz and David Ehrenreich and Pierre Maxted and Kate Isaak and Nicolas Billot and Yann Alibert and Roi Alonso and Carlos António and Joel Asquier and Timothy Bandy and Tamas Bárczy and David Barrado and Susana Barros and Wolfgang Baumjohann and Anja Bekkelien and Maria Bergomi and Federico Biondi and Xavier Bonfils and Luca Borsato and Alexis Brandeker and Martin-Diego Busch and Juan Cabrera and Virginie Cessa and Sébastien Charnoz and Bruno Chazelas and Andrew Collier Cameron and Carlos Corral Van Damme and David Cortes and Melvyn Davies and Magali Deleuil and Adrien Deline and Laetitia Delrez and Olivier Demangeon and Brice-Olivier Demory and Anders Erikson and Jacopo Farinato and Luca Fossati and Malcolm Fridlund and David Futyan and Davide Gandolfi and Antonio Garcia Munoz and Michaël Gillon and Pascal Guterman and Antonio Gutierrez and Johann Hasiba and Kevin Heng and Eduardo Hernandez and Sergio Hoyer and Laszlo Kiss and Zsolt Kovacs and Thibault Kuntzer and Jacques Laskar and Alain Lecavelier des Etangs and Monika Lendl and Amador López and Ivan Lora and Christophe Lovis and Theresa Lüftinger and Demetrio Magrin and Luca Malvasio and Luca Marafatto and Harald Michaelis and Diana de Miguel and David Modrego and Matteo Munari and Valerio Nascimbeni and Göran Olofsson and Harald Ottacher and Roland Ottensamer and Isabella Pagano and Roberto Palacios and Enric Pallé and Gisbert Peter and Daniele Piazza and Giampaolo Piotto and Alberto Pizarro and Don Pollaco and Roberto Ragazzoni and Francesco Ratti and Heike Rauer and Ignasi Ribas and Martin Rieder and Reiner Rohlfs and Frederic Safa and Mario Salatti and Nuno Santos and Gaetano Scandariato and Damien Ségransan and Attila Simon and Alexis Smith and Michael Sordet and Sergio Sousa and Manfred Steller and Gyula Szabó and Janos Szoke and Nicolas Thomas and Matthias Tschentscher and Stéphane Udry and Valérie Van Grootel and Valentina Viotto and Ingo Walter and Nicholas Walton and François Wildi and David Wolter},
journal= {arXiv preprint arXiv:2009.11633},
year = {2020}
}
备注
Submitted to Experimental Astronomy