宽视场InfrarRed巡天望远镜-天体物理聚焦望远镜资产WFIRST-AFTA 2015年报告
Wide-Field InfrarRed Survey Telescope-Astrophysics Focused Telescope Assets WFIRST-AFTA 2015 Report
摘要：
本报告描述了科学定义小组（SDT）的宽视场红外巡天望远镜（WFIRST）任务的2014年研究。这是一个空间观测站，将使用一个2.4米望远镜，配备宽视场红外仪器和光学日冕仪，处理暗能量、系外行星和一般天体物理学方面最引人注目的科学问题。Astro 2010年十年巡天计划建议将大视场红外巡天望远镜作为新的大型空间任务的首要任务。根据十年调查的设想，WFIRST将执行一项暗能量科学计划，一项确定系外行星人口统计的微透镜计划，以及一项利用其超宽视野的一般观测计划。2012年10月，美国宇航局特许成立了一个科学定义小组（SDT），与GSFC的WFIRST研究办公室和喷气推进实验室的项目办公室合作，利用最近向美国宇航局提供的2.4米哈勃质量望远镜组件之一，为WFIRST的实施制定设计参考任务（DRM）。该DRM基于Green等人（2012）报告的早期WFIRST SDT和Spergel等人报告的先前WFIRST-2.4 DRM的工作。（2013年）。2.4米主镜使飞行任务比以前考虑的1.3米和1.1米设计具有更高的灵敏度和更高的角分辨率，既增加了主要调查的科学回报，又增加了WFIRST作为客座观测设施的能力。在基线设计中增加一个同轴日冕仪，可以对附近恒星周围的行星进行成像和光谱研究。
英文摘要：
This report describes the 2014 study by the Science Definition Team (SDT) of the Wide-Field Infrared Survey Telescope (WFIRST) mission. It is a space observatory that will address the most compelling scientific problems in dark energy, exoplanets and general astrophysics using a 2.4-m telescope with a wide-field infrared instrument and an optical coronagraph. The Astro2010 Decadal Survey recommended a Wide Field Infrared Survey Telescope as its top priority for a new large space mission. As conceived by the decadal survey, WFIRST would carry out a dark energy science program, a microlensing program to determine the demographics of exoplanets, and a general observing program utilizing its ultra wide field. In October 2012, NASA chartered a Science Definition Team (SDT) to produce, in collaboration with the WFIRST Study Office at GSFC and the Program Office at JPL, a Design Reference Mission (DRM) for an implementation of WFIRST using one of the 2.4-m, Hubble-quality telescope assemblies recently made available to NASA. This DRM builds on the work of the earlier WFIRST SDT, reported by Green et al. (2012) and the previous WFIRST-2.4 DRM, reported by Spergel et. (2013). The 2.4-m primary mirror enables a mission with greater sensitivity and higher angular resolution than the 1.3-m and 1.1-m designs considered previously, increasing both the science return of the primary surveys and the capabilities of WFIRST as a Guest Observer facility. The addition of an on-axis coronagraphic instrument to the baseline design enables imaging and spectroscopic studies of planets around nearby stars.
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