NuAncestor：一种人工卫星载星体，用于准确校准地面EPRV光谱仪的频率
天体物理仪器与方法
2025-07-14 v1
摘要
国际极端精密径向速度 (EPRV) 光谱仪的准确度取决于对极其精确和稳定波长校准源的访问。目前可用的校准源包括发射灯、激光频率 comb 和参考腔体，可用于校准天文光谱仪。然而，当前的校准始终是“局部”进行的。在本提议演讲中，我们将提出 NuAncestor 概念，该概念通过在卫星上装载激光频率 comb 并配备主动指向望远镜和精密轨道测绘，为天文高分辨率、高精度光谱仪提供准确（绝对）和统一的波长校准。该校准卫星应用于全球主要天文台的 EPRV 光谱仪。
引用
@article{arxiv.2507.08413,
title = {NuAncestor: an artificial satellite-borne star for accurate frequency calibration of ground-based EPRV spectrographs},
author = {F. Pepe and M. Bugatti and A. Baur and J. Berney and E. Bozzo and C. Broeg and B. Crazzolara and A. Deep and F. Droz and J. Figuereido and H. Haile and L. Jolissaint and S. Lecomte and J. Moerschell and Ch. Mordasini and E. Obrzud and C. Praplan and M. Sarajlic and B. Soja and M. Van den Broeck},
journal= {arXiv preprint arXiv:2507.08413},
year = {2025}
}
备注
Proceedings of the SPIE conference, Volume 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI; 131005W