Wang Fengfei1; Zhang Haotong1; Luo Ali1; Bai Zhongrui1; Du Bing2; Zhao Yongheng1
Source Publicationsciencechinaphysicsmechanicsastronomy
AbstractSpectrograph slit is conventionally used to enhance the spectral resolution and manage how much light can be allowed to enter spectrograph. The narrow slit provides a higher resolution but sacrifices efficiency of spectrograph and results in a low signal to noise ratio (S/N) spectra product. We take GuoShouJing telescope as an example and carry out a series of experiments to study how its 2/3 slit mode affects the precision of stellar radial velocity measurement and atmosphere parameters estimate. By transforming the resolution and adding a Gaussian White Noise to the extremely high quality spectra from the Sloan Digital Sky Survey, we generate synthetic stellar spectra of various brightness with different S/Ns. Comparing the measurements on these noise added spectra with the original high quality ones, we summarize the influences of the 2/3 slit mode on the measurement accuracy of stellar radial velocity and atmospheric parameters.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang Fengfei,Zhang Haotong,Luo Ali,et al. theeffectsofspectrographslitmodesontheaccuracyofstellarradialvelocitymeasurementandatmosphericparameterestimation[J]. sciencechinaphysicsmechanicsastronomy,2013,56(10):1833.
APA Wang Fengfei,Zhang Haotong,Luo Ali,Bai Zhongrui,Du Bing,&Zhao Yongheng.(2013).theeffectsofspectrographslitmodesontheaccuracyofstellarradialvelocitymeasurementandatmosphericparameterestimation.sciencechinaphysicsmechanicsastronomy,56(10),1833.
MLA Wang Fengfei,et al."theeffectsofspectrographslitmodesontheaccuracyofstellarradialvelocitymeasurementandatmosphericparameterestimation".sciencechinaphysicsmechanicsastronomy 56.10(2013):1833.
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