264 citations · 2.9k across the 99 of their papers we have counts for
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Atmospheric Extinction Coefficients and Night Sky Brightness At the Xuyi Observational Station
H. -H Zhang, X. -W. Liu, H. -B. Yuan +4
We present measurements of the optical broadband atmospheric extinction coefficients and the night sky brightness at the Xuyi Observational Station of Purple Mountain Observatory (…
Extremely Metal-Poor Star Candidates in the SDSS
Siyao Xu, Huawei Zhang, Xiaowei Liu
For a sample of metal-poor stars (-3.3< [Fe/H] <-2.2) that have high-resolution spectroscopic abundance determinations, we have measured equivalent widths (EW) of the Ca II K, Mg I…
Competitive accretion in the protocluster G10.6-0.4?
Tie Liu, Yuefang Wu, Jingwen Wu +2
We present the results of high spatial resolution observations at 1.1 mm waveband, with the Submillimetre Array (SMA), towards the protocluster G10.6-0.4. The 1.1 mm continuum emis…
Molecular gas and triggered star formation surrounding Wolf-Rayet stars
Tie Liu, Yuefang Wu, Huawei Zhang
The environments surrounding nine Wolf-Rayet stars were studied in molecular emission. Expanding shells were detected surrounding these WR stars (see left panels of Figure 1). The…
Molecular environments of 51 Planck cold clumps in Orion complex
Tie Liu, Yuefang Wu, Huawei Zhang
A mapping survey towards 51 Planck cold clumps projected on Orion complex was performed with J=1-0 lines of CO and CO at the 13.7 m telescope of Purple Mountain Obser…
Triggered star formation surrounding Wolf-Rayet star HD 211853
Tie Liu, Yuefang Wu, Huawei Zhang +1
The environment surrounding Wolf-Rayet star HD 211853 is studied in molecular emission, infrared emission, as well as radio and HI emission. The molecular ring consists of well-sep…