44 citations · 99 across the 7 of their papers we have counts for
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astro-ph.IM2016★ 22 cited
The Night Sky Spectrum of Xinglong Observatory: Changes from 2004 to 2015
Ji-Cheng Zhang, Zhou Fan, Jing-Zhi Yan +4
We present spectroscopic measurements on the night sky of Xinglong Observatory for a period of 12 years from 2004 to 2015. The spectra were obtained on moonless clear nights using…
astro-ph.SR2016
Long-term Optical Studies of the Be/X-ray Binary RX J0440.9+4431/LS V+44 17
Jingzhi Yan, Peng Zhang, Wei Liu +1
We present the spectroscopic and photometric observations on the Be/X-ray binary RX~J0440.9+4431 from 2001 to 2014. The short-term and long-term variability of the H line profil…