论文标题
Ristretto：用于外球星氛围表征的探路仪器
RISTRETTO: a pathfinder instrument for exoplanet atmosphere characterization
论文作者
论文摘要
我们介绍了ESO VLT的Ristretto仪器，这是从将Sphere High-Contrast设施连接到Espresso光谱仪的最初想法的演变（Lovis等，2017）。 Ristretto是一款独立的AO喂养光谱仪，提议为访客仪器，目的是首次以反射光检测附近的系外行星。 Ristretto的目的是使用高对比度，高分辨率光谱法表征Proxima B和其他几个系外行星的大气。该仪器由两个部分组成：将安装在VLT UT4上的前端，该前端使用具有冠状动脉功能和7纤维IFU的AOF设施提供了两阶段的自适应光学系统，并在620-840 NM范围内提供了7纤维IFU和衍射限制的R = 135,000光谱仪。我们介绍仪器的要求和初步设计。
We introduce the RISTRETTO instrument for ESO VLT, an evolution from the original idea of connecting the SPHERE high-contrast facility to the ESPRESSO spectrograph (Lovis et al 2017). RISTRETTO is an independent, AO-fed spectrograph proposed as a visitor instrument, with the goal of detecting nearby exoplanets in reflected light for the first time. RISTRETTO aims at characterizing the atmospheres of Proxima b and several other exoplanets using the technique of high-contrast, high-resolution spectroscopy. The instrument is composed of two parts: a front-end to be installed on VLT UT4 providing a two-stage adaptive optics system using the AOF facility with coronagraphic capability and a 7-fiber IFU, and a diffraction-limited R=135,000 spectrograph in the 620-840 nm range. We present the requirements and the preliminary design of the instrument.
