CUBES：卡塞格林U波段高效光谱仪
天体物理仪器与方法
2022-08-04 v1 仪器与探测器
摘要
在极大望远镜时代，当前一代8-10米设备 foreseeable 未来可能在地基紫外波长上保持竞争力。卡塞格林U波段高效光谱仪（CUBES）旨在近紫外（要求305-400 nm，目标300-420 nm）提供高效率（>40%）观测，光谱分辨力R>20,000（另含R~7,000的低分辨、受天空限制模式）。设计聚焦于最大化仪器 throughput（确保对U~18.5 mag天体在1小时观测中每高分辨单元信噪比SNR~20），它将为诸多天体物理领域提供新可能，可获取恒星光谱关键谱线：极多样的铁峰与重元素、较轻元素（尤其铍）及轻分子（CO、CN、OH），以及巴耳末线与巴耳末跳变（对年轻恒星天体尤为重要）。紫外范围在河外研究中亦关键：遥远星系的环星系介质、不同源类对宇宙紫外背景的贡献、在相对透明星系际介质 regime 下H2与原始氘的测量，以及爆发暂现源的后随观测。CUBES项目于2021年6月完成A阶段概念设计，现已进入详细设计与建造阶段。首次科学观测计划于2028年。
引用
@article{arxiv.2208.01672,
title = {CUBES, the Cassegrain U-Band Efficient Spectrograph},
author = {S. Cristiani and J. M. Alcalá and S. H. P. Alencar and S. A. Balashev and N. Bastian and B. Barbuy and U. Battino and A. Calcines and G. Calderone and P. Cambianica and R. Carini and B. Carter and S. Cassisi and B. V. Castilho and G. Cescutti and N. Christlieb and R. Cirami and I. Coretti and R. Cooke and S. Covino and G. Cremonese and K. Cunha and G. Cupani and A. R. da Silva and V. De Caprio and A. De Cia and H. Dekker and V. D'Elia and G. De Silva and M. Diaz and P. Di Marcantonio and D. D'Auria and V. D'Odorico and A. Fitzsimmons and H. Ernandes and C. Evans and M. Franchini and M. Genoni and B. Gänsicke and R. E. Giribaldi and C. Gneiding and A. Grazian and C. J. Hansen and F. La Forgia and M. Landoni and M. Lazzarin and D. Lunney and W. Maciel and W. Marcolino and M. Marconi and A. Migliorini and C. Miller and P. Noterdaeme and C. Opitom and G. Pariani and B. Pilecki and S. Piranomonte and A. Quirrenbach and E. M. A. Redaelli and C. B. Pereira and S. Randich and S. Rossi and R. Sanchez-Janssen and W. Seifert and R. Smiljanic and C. Snodgrass and I. Stilz and J. Stürmer and E. Vanzella and P. Ventura and O. Verducci and C. Waring and S. Watson and M. Wells and D. Wright and T. Zafar and A. Zanutta},
journal= {arXiv preprint arXiv:2208.01672},
year = {2022}
}
备注
SPIE proceedings, SPIE Astronomical Telescopes + Instrumentation 2022, Montr\'eal, Canada; 20 pages, 13 figures, 2 tables