双子座高分辨率光学光谱仪的科学性能
天体物理仪器与方法
2024-01-17 v1
摘要
双子座高分辨率光学光谱仪（GHOST）是安装在双子座南望远镜上的一套光纤馈送光谱仪系统，可同时覆盖348至1061纳米波长范围，并针对363至950纳米区间进行了最优性能设计。它能在7.5角分直径的视场内以R=56,000的分辨率同时观测两个目标，或以R=75,000的分辨率观测单个目标。光谱分辨率模式通过积分视场单元实现：在高分辨率模式下，使用19根光纤将1.2角秒孔径的像切分为五倍宽度；在标准分辨率模式下，使用7根光纤将其切分为三倍宽度。GHOST配备了用于精密径向速度测量的硬件，预期精度可达米每秒量级。本文描述了GHOST的基本设计和运行能力，并进一步推导和量化了与其科学用户最相关的在轨性能关键方面。
引用
@article{arxiv.2401.07452,
title = {The Science Performance of the Gemini High Resolution Optical Spectrograph},
author = {Alan W. McConnachie and Christian R. Hayes and J. Gordon Robertson and John Pazder and Michael Ireland and Greg Burley and Vladimir Churilov and Jordan Lothrop and Ross Zhelem and Venu Kalari and André Anthony and Gabriella Baker and Trystyn Berg and Edward L. Chapin and Timothy Chin and Adam Densmore and Ruben Diaz and Jennifer Dunn and Michael L. Edgar and Tony Farrell and Veronica Firpo and Javier Fuentes and Manuel Gomez-Jimenez and Tim Hardy and David Henderson and Alexis Hill and Kathleen Labrie and Jaclyn Jensen and Sam Lambert and Jon Lawrence and G. Scott Macdonald and Steven Margheim and Bryan Millar and Rolf Muller and Jon G. Nielsen and Gabriel Pérez and Carlos Quiroz and Roque Ruiz-Carmona and Kim M. Sebo and Federico Sestito and Kareleyne Silva and Chris Simpson and Greg Smith and Sudharshan Venkatesan and Fletcher Waller and Lewis Waller and Ivan Wevers and Kim A. Venn and Peter Young},
journal= {arXiv preprint arXiv:2401.07452},
year = {2024}
}
备注
37 pages, 27 figures. Accepted for publication in Publications of the Astronomical Society of the Pacific