论文标题
JWST的直接成像和系外行星系统的直接成像和光谱的早期发行科学计划
The JWST Early Release Science Program for the Direct Imaging & Spectroscopy of Exoplanetary Systems
论文作者
论文摘要
具有高对比度成像的外行系统的直接表征是更广泛的系外行星社区的最高优先事项之一。由于要检测和表征欧洲界双胞胎需要大型空间任务，因此开发直接成像的技术和技术是社区的驱动重点。 JWST首次将直接观察到超过5 $μ$ m的中红外波长，提供详细的光谱，揭示了更精确的化学丰度和大气条件，并对我们太阳能系统冰之冰行星的类似物的敏感性敏感，在宽阔的轨道分离处，是一个全新的外exoplanet类别。但是，为了最大程度地提高任务一生中的科学输出，需要在任务中尽早对JWST的工具性能进行精致的理解。在本文中，我们描述了我们55小时的早期发行科学计划，该计划将利用所有四种JWST乐器将行星大众伴侣的特征扩展到$ \ sim $ 15 $μ$ m，并以前红外的形象形象，并以前红外的态度形象。我们的程序还将在预期的关键模式中评估天文台的性能，该模式通常用于系外行星直接成像和光谱，优化数据校准和处理，并生成代表性的数据集，这些数据集将使广泛的用户群有效地计划以在未来周期中进行一般观察计划。
The direct characterization of exoplanetary systems with high contrast imaging is among the highest priorities for the broader exoplanet community. As large space missions will be necessary for detecting and characterizing exo-Earth twins, developing the techniques and technology for direct imaging of exoplanets is a driving focus for the community. For the first time, JWST will directly observe extrasolar planets at mid-infrared wavelengths beyond 5$μ$m, deliver detailed spectroscopy revealing much more precise chemical abundances and atmospheric conditions, and provide sensitivity to analogs of our solar system ice-giant planets at wide orbital separations, an entirely new class of exoplanet. However, in order to maximise the scientific output over the lifetime of the mission, an exquisite understanding of the instrumental performance of JWST is needed as early in the mission as possible. In this paper, we describe our 55-hour Early Release Science Program that will utilize all four JWST instruments to extend the characterisation of planetary mass companions to $\sim$15$μ$m as well as image a circumstellar disk in the mid-infrared with unprecedented sensitivity. Our program will also assess the performance of the observatory in the key modes expected to be commonly used for exoplanet direct imaging and spectroscopy, optimize data calibration and processing, and generate representative datasets that will enable a broad user base to effectively plan for general observing programs in future cycles.
