SPICES：系外行星系统的光谱偏振成像和表征
SPICES: Spectro-Polarimetric Imaging and Characterization of Exoplanetary Systems
摘要：
SPICES（系外行星系统的光谱偏振成像和表征）是向欧空局宇宙视觉提出的一项为期五年的M级任务。其目的是利用光谱学和偏振测量法，以约40的光谱分辨率在可见光（450 - 900纳米）范围内对长周期太阳系外行星和星周盘进行成像和定性。到2020/22年，现有和近期的仪器将发现数十颗SPICES能够详细观察和研究的行星。SPICES配备了一个1.5米的望远镜，可以优先访问位于几个天文单位（0.5-10天文单位）附近的恒星（$<$ 25 pc）的系外行星，其质量从几个木星质量到超级地球（$\sim$ 2地球半径，$\sim$ 10 M $_{\oplus}$），以及像太阳系黄道光几倍那样微弱的星周盘。
英文摘要：
SPICES (Spectro-Polarimetric Imaging and Characterization of Exoplanetary Systems) is a five-year M-class mission proposed to ESA Cosmic Vision. Its purpose is to image and characterize long-period extrasolar planets and circumstellar disks in the visible (450 - 900 nm) at a spectral resolution of about 40 using both spectroscopy and polarimetry. By 2020/22, present and near-term instruments will have found several tens of planets that SPICES will be able to observe and study in detail. Equipped with a 1.5 m telescope, SPICES can preferentially access exoplanets located at several AUs (0.5-10 AU) from nearby stars ($<$25 pc) with masses ranging from a few Jupiter masses to Super Earths ($\sim$2 Earth radii, $\sim$10 M$_{\oplus}$) as well as circumstellar disks as faint as a few times the zodiacal light in the Solar System.
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