升级高对比度成像设施SPHERE：科学目标与仪器选择
天体物理仪器与方法
2022-09-07 v1 地球与行星天体物理
摘要
SPHERE+是VLT上SPHERE仪器的拟议升级方案，旨在提升当前系外行星与星盘的探测与表征性能。SPHERE+还将作为欧洲ELT未来行星搜寻仪（PCS）的演示器。SPHERE+的主要科学驱动为：1/ 探及年轻巨行星族的主体直至雪线（ au），以弥补与互补技术（视向速度、天体测量）之间的鸿沟；2/ 相比SPHERE已观测目标，观测更暗且更红的最年轻（\,Myr）星协中的目标，以直接研究其诞生环境中巨行星的形成；3/ 通过提高光谱分辨率来打破巨行星大气模型中的简并性，从而提升系外行星大气的表征水平。实现这些目标需要将xAO系统的带宽从1 kHz增至3\,kHz，并将红外灵敏度提升2至3\,mag。这些特性将由优化的红外二阶AO系统配合金字塔波前传感器提供。作为新科学仪器，一台中分辨率积分视场光谱仪将在J和H波段提供1000至5000的光谱分辨率。本文概述了SPHERE+的科学驱动、需求以及为达成最终选定基线概念所做的关键仪器权衡。
引用
@article{arxiv.2209.02092,
title = {Upgrading the high contrast imaging facility SPHERE: science drivers and instrument choices},
author = {A. Boccaletti and G. Chauvin and F. Wildi and J. Milli and E. Stadler and E. Diolaiti and R. Gratton and F. Vidal and M. Loupias and M. Langlois and F. Cantalloube and M. N'Diaye and D. Gratadour and F. Ferreira and M. Tallon and J. Mazoyer and D. Segransan and D. Mouillet and J. -L. Beuzit and M. Bonnefoy and R. Galicher and A. Vigan and I. Snellen and M. Feldt and S. Desidera and S. Rousseau and A. Baruffolo and C. Goulas and P. Baudoz and C. Bechet and M. Benisty and A. Bianco and B. Carry and E. Cascone and B. Charnay and E. Choquet and V. Christiaens and F. Cortecchia and V. de Caprio and A. De Rosa and C. Desgrange and V. D'Orazi and S. Douté and M. Frangiamore and E. Gendron and C. Ginski and E. Huby and C. Keller and C. Kulcsár and R. Landman and S. Lagarde and E. Lagadec and A. -M. Lagrange and M. Lombini M. Kasper and F. Ménard and Y. Magnard and G. Malaguti and D. Maurel and D. Mesa and G. Morgante and E. Pantin and T. Pichon and A. Potier and P. Rabou and S. Rochat and L. Terenzi and E. Thiébaut and I. Tallon-Bosc and H. -F. Raynaud and D. Rouan and A. Sevin and F. Schiavone and L. Schreiber and A. Zanutta},
journal= {arXiv preprint arXiv:2209.02092},
year = {2022}
}
备注
To appear in the Proceedings of the SPIE Astronomical Telescopes + Instrumentation (2022), 13 pages, 6 figure