中国SONG项目高分辨光谱仪与高精度恒星震动视向速度测量

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  • Zheng Zhou Yan, National Astronomical Observatories Chinese Academy of Sciences, University of Chinese Academy of Sciences, China West Normal University
  • ,
  • Li Cai Deng, National Astronomical Observatories Chinese Academy of Sciences
  • ,
  • Chun Guang Zhang, National Astronomical Observatories Chinese Academy of Sciences
  • ,
  • Chang Qing Luo, National Astronomical Observatories Chinese Academy of Sciences
  • ,
  • F. Grundahl
  • Zhong Wen Hu, Chinese Academy of Sciences
  • ,
  • Hang Xin Ji, Chinese Academy of Sciences
  • ,
  • Jia Ning Wang, Chinese Academy of Sciences
  • ,
  • Ming Ming Xu, Nanjing Institute of Astronomical Optics & Technology, Chinese Academy of Sciences
  • ,
  • Song Xing Dai, Chinese Academy of Sciences
  • ,
  • M. F. Andersen
  • Kun Wang, China West Normal University
  • ,
  • Jian Feng Tian, National Astronomical Observatories Chinese Academy of Sciences

SONG (Stellar Observations Network Group) is an international collaboration project involving many countries. Chinese stellar physics community is participating the project as a national member, contributing a full set of instruments and a site. The key instrument is a high resolution spectrograph which, when adopting iodine cell for wave length calibration, can deliver radial velocity measurements at an accuracy of 1 m•s-1. Such a high accuracy together with the long term stability is the keys to the science goals of SONG, one of which is to study the internal structure of stars directly using the technique of Asteroseismology. In this paper, we are going to present the design, parameters and performance of the spectrograph by using spectra taken during the commissioning of the system. As long term thermo-mechanic stability of the system is extremely important for the science goals, we will also describe the laboratory environments to realize such a condition.

OriginalsprogKinesisk
TidsskriftGuang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis
Vol/bind38
Nummer2
Sider (fra-til)621-626
Antal sider6
ISSN1000-0593
DOI
StatusUdgivet - 1 feb. 2018

    Forskningsområder

  • High precision radial velocity measurements, High resolution spectrograph

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