The Transiting Exoplanet Community Early Release Science Program for JWST
The Transiting Exoplanet Community Early Release Science Program for JWST
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DOI：
10.1088/1538-3873/aadbf3
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发表时间：
2018-11-01
影响因子：
3.5
通讯作者：
Zingales, Tiziano
中科院分区：
文献类型：
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作者：
Bean, Jacob L.;Stevenson, Kevin B.;Zingales, Tiziano
詹姆斯·韦伯太空望远镜（JWST）提供了一个机会，通过以前所未有的细节揭示大气成分，结构和过境系外行星的动力学来改变我们对行星和生命起源的理解。然而，这种调查所需的高精度，时间序列观测具有独特的技术挑战，哈勃，斯皮策和其他设施的先前经验表明，当JWST投入使用时，将有一个陡峭的学习曲线。在本文中，我们描述了凌日系外行星社区早期释放科学（ERS）计划的科学目标和详细计划，该计划是最近批准的JWST观测计划。我们还描述了用于建立程序的模拟。该项目所获得的数据将没有专属访问期，其目标是加快获取和传播利用JWST进行凌日系外行星观测的技术专门知识，同时还提供一套引人注目的代表性数据集，从而能够立即实现科学突破。凌日系外行星社区ERS计划将运用所有四个JWST仪器的时间序列模式，这些仪器已被确定为共识的最高优先级，观察全套凌日系外行星特征几何（凌日，日食和相位曲线），并以跨越说明性亮度范围的宿主恒星为目标行星。该计划中的观测是通过一个包容和透明的过程来定义的，JWST仪器专家和过境系外行星研究的国际领导人都参与了这一过程。这些目标已经过先前测量的审查，将在使命的早期被观测到，并具有特殊的科学价值。社区参与该项目将集中在两个阶段的数据挑战，最终提供行星光谱，时间序列仪器性能报告和开源数据分析工具包，以及时通知JWST使命周期2的议程。
The James Webb Space Telescope (JWST) presents the opportunity to transform our understanding of planets and the origins of life by revealing the atmospheric compositions, structures, and dynamics of transiting exoplanets in unprecedented detail. However, the high-precision, timeseries observations required for such investigations have unique technical challenges, and prior experience with Hubble, Spitzer, and other facilities indicates that there will be a steep learning curve when JWST becomes operational. In this paper, we describe the science objectives and detailed plans of the Transiting Exoplanet Community Early Release Science (ERS) Program, which is a recently approved program for JWST observations early in Cycle 1. We also describe the simulations used to establish the program. The goal of this project, for which the obtained data will have no exclusive access period, is to accelerate the acquisition and diffusion of technical expertise for transiting exoplanet observations with JWST, while also providing a compelling set of representative data sets that will enable immediate scientific breakthroughs. The Transiting Exoplanet Community ERS Program will exercise the timeseries modes of all four JWST instruments that have been identified as the consensus highest priorities, observe the full suite of transiting planet characterization geometries (transits, eclipses, and phase curves), and target planets with host stars that span an illustrative range of brightnesses. The observations in this program were defined through an inclusive and transparent process that had participation from JWST instrument experts and international leaders in transiting exoplanet studies. The targets have been vetted with previous measurements, will be observable early in the mission, and have exceptional scientific merit. Community engagement in the project will be centered on a two-phase Data Challenge that culminates with the delivery of planetary spectra, timeseries instrument performance reports, and open-source data analysis toolkits in time to inform the agenda for Cycle 2 of the JWST mission.