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Conceptual Design of High-resolution Ultra-stable Spectrograph for GTC
Zhang K(张凯); Zhu YT(朱永田); Wang J(王靓); Xiao D(肖东); Ye HQ(叶慧琪); Wang L(王磊); Wu Z(吴桢); Liu CC(刘成超); Hao ZB(郝志博); Zhang HT(章华涛); 新其其格; Han J(韩建); Tang Z(汤振)
2020-12
会议名称SPIE ASTRONOMICAL TELESCOPES + INSTRUMENTATION
会议录名称Proc. of SPIE Vol. 11447
会议日期2020-12-13
会议地点California, United States
摘要
A joint project has been proposed by the Chinese and Spanish astronomy communities, to develop a high-resolution, ultrastable spectrograph for the Gran Telescopio Canarias (GTC) at La Palma. Being expected to conduct precise radial velocity (PRV) measurement with extreme precision of up to 10 cm s−1, the instrument would promote the very high, present interest in the astronomical community to detect and characterize exoplanets. The project successfully passed the conceptual design review (CoDR) in 2019. The instrument is composed of a near-UV band spectrograph (UVS) and a visible band spectrograph (VIS). They provide a spectral resolving power of R ≥100,000 in the visible band (420 nm – 780 nm), and R≥25,000 in the UV band (310 nm – 420 nm). The VIS subsystem will be enclosed in an ultra-stable environment in the Coudé room for the stellar precise radial velocity (PRV) measurements. The UVS subsystem will be located near the Nasmyth focus to improve the total throughput at the wavelength shorter than 400 nm, to ensure various additional science cases ranging from stellar evolution to the measurement of fundamental constants. This paper gives an overview of the project background, science cases, and technical considerations during the conceptual design phase.
关键词Gran Telescopio Canarias High Resolution Spectrograph Exoplanet Precise Radial Velocity Measurement
学科领域天文技术与方法
语种英语
文献类型会议论文
条目标识符http://ir.niaot.ac.cn/handle/114a32/1775
专题会议论文
作者单位南京天文光学技术研究所
推荐引用方式
GB/T 7714
Zhang K,Zhu YT,Wang J,et al. Conceptual Design of High-resolution Ultra-stable Spectrograph for GTC[C],2020.
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