利用SPHERE进行系外行星特征描述的原型日冕仪
Prototyping coronagraphs for exoplanet characterization with SPHERE
摘要：
用SPHERE（光谱偏振高对比度系外行星研究）探测和表征系外行星是一项挑战，特别是依赖于日冕仪衰减衍射星光的能力。SPHERE包括3台仪器，其中2台可以在0.95至1.8微米的近红外范围内同时操作。这一要求对于日冕测量是极其关键的。本文简要介绍了由法国巴黎天文台（LESIA）和法国尼斯大学（FIZEAU）组成的SPHERE联盟研制的两种日冕仪：半波片四象限相位掩模和变迹光瞳Lyot日冕仪的概念。然后，我们提出了对比度和灵敏度分析的测量。与技术规格的比较允许验证制造这些日冕仪的技术。
英文摘要：
The detection and characterization of extrasolar planets with SPHERE (Spectro Polarimetric High contrast Exoplanet REsearch) is challenging and in particular relies on the ability of a coronagraph to attenuate the diffracted starlight. SPHERE includes 3 instruments, 2 of which can be operated simultaneously in the near IR from 0.95 to 1.8 microns. This requirements is extremely critical for coronagraphy. This paper briefly introduces the concepts of 2 coronagraphs, the Half-Wave Plate Four Quadrant Phase Masks and the Apodized Pupil Lyot Coronagraph, prototyped within the SPHERE consortium by LESIA (Observatory of Paris) and FIZEAU (University of Nice) respectively. Then, we present the measurements of contrast and sensitivity analysis. The comparison with technical specifications allows to validate the technology for manufacturing these coronagraphs.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
