20 citations · 84 across the 11 of their papers we have counts for
11 papers
The infrared traced star formation rates of associated absorption lines quasars
Zhe-Geng Chen, Rui-Jing Lu, Zhi-Fu Chen +4
Some optically selected quasars exhibit Mg II assoicated absorption lines (AALs), and its origin remains unclear. In this paper, we compile a sample of 1769 quasars, with or withou…
Narrow [O III] emission lines as a potential proxy for the evolutionary stage of quasars
Zhi-fu Chen, Zhe-Geng Chen, Xing-long Peng +1
Radio spectral shape of quasars can provide insight into the ages of quasars. We have compiled data for 1804 quasars with from the Sloan Digital Sky Survey (SDSS). Add…
A centi-pc-scale compact radio core in the nearby galaxy M60
Xiaofeng Li, Jun Yang, Xiaopeng Cheng +7
M60, an elliptical galaxy located 16.5~Mpc away, has an active nucleus with a very low luminosity and an extremely low accretion rate. Its central supermassive black hole has a mas…
A Catalog of LAMOST Variable Sources Based on Time-domain Photometry of ZTF
Tingting Xu, Chao Liu, Feng Wang +4
The identification and analysis of different variable sources is a hot issue in astrophysical research. The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spect…
Robust Automated Photometry Pipeline for Blurred Images
Weirong Huang, Zhou Xie, Wenjie Zhong +4
The primary task of the 1.26-m telescope jointly operated by the National Astronomical Observatory and Guangzhou University is photometric observations of the g, r, and i bands. A…
A Hybrid method of accurate classification for Blazars Of Uncertain Type in Fermi LAT Catalogs
Yijun Xu, Weirong Huang, Hui Deng +2
Significant progress in the classification of Fermi unassociated sources , has led to an increasing number of blazars are being found. The optical spectrum is effectively used to c…
Correlation between the ionizing continuum and variable C iv broad absorption line in multi-epoch observations of SDSS J141007.74+541203.3
Hong-Yan Huang, Cai-Juan Pan, Wei-Jian Lu +9
Correlation between the variations of quasar absorption lines and the ionizing continuum have been recently confirmed in systematic studies. However, no convincing individual case…
The associated absorption features in quasar spectra of the Sload Digital Sky survey .I. \MgII\ absorption doublets
Chen Zhi-Fu, Huang Wei-Rong, Pang Ting-Ting +5
Using the SDSS spectra of quasars included in the DR7Q or DR12Q catalogs, we search for Mg II narrow absorption doublets in the spectra data around Mg II emission lines. We obtain…
Evidence for photoionization-driven variability in narrow absorption lines
Wei-Jian Lu, Ying-Ru Lin, Yi-Ping Qin +10
In this Letter, we report the discovery of a strong correlation between the variability of narrow absorption lines (NALs) and the ionizing continuum from a two-epoch spectra sample…
Catalog of narrow absorption lines in BOSS (I): for quasars with
Zhi-Fu Chen, Yi-Ping Qin, Cai-Juan Pan +3
We have assembled absorption systems by visually identifying absorption doublets in the quasar spectra of the Baryon Oscillation Spectroscopic Survey (BOSS)…
Emergences of C IV narrow absorption troughs in the quasar SDSS J095254.10+021932.8
Zhi-Fu Chen, Mu-Sheng Li, Wei-Rong Huang +2
In this paper, we report on two C IV narrow absorption systems emerging from the spectrum of the quasar SDSS J095254.10 +021932.8, which are located at and $z_…