117 citations · 676 across the 33 of their papers we have counts for
5 papers · 1 filter
Discovery of A Mg II Changing-look AGN and its Implications for a Unification Sequence of Changing-look AGNs
Hengxiao Guo, Mouyuan Sun, Xin Liu +5
Changing-Look (CL) is a rare phenomenon of Active Galactic Nuclei (AGNs) that exhibit emerging or disappearing broad lines accompanied by continuum variations on astrophysically sh…
Understanding Broad Mg II Variability in Quasars with Photoionization: Implications for Reverberation Mapping and Changing-Look Quasars
Hengxiao Guo, Yue Shen, Zhicheng He +7
The broad Mg II line in quasars has distinct variability properties compared with broad Balmer lines: it is less variable, and usually does not display a "breathing" mode, the incr…
On the Origin of the Dramatic Spectral Variability of WPVS 007
Junyao Li, Mouyuan Sun, Tinggui Wang +2
We report the discovery of large-amplitude mid-infrared variabilities (MIR; mag) in the Wide-field Infrared Survey Explorer W1 and W2 bands of the low-luminosity narrow-…
The properties of broad absorption line outflows based on a large sample of quasars
Zhicheng He, Tinggui Wang, Guilin Liu +8
Quasar outflows carry mass, momentum and energy into the surrounding environment, and have long been considered a potential key factor in regulating the growth of supermassive blac…
Effect of richness on AGN and star formation activities in SDSS galaxy groups
Feng Li, Yi-Zhou Gu, Qi-Rong Yuan +3
Based on a large sample of 254 220 galaxies in 81 089 groups, which are selected from the spectroscopic galaxy sample of the SDSS DR12, we investigate the radial distribution of in…