From the 1 of 4 linked papers with an AI index.
4 papers
Revealing the Physical Driver of the Baldwin Effect: Gas Density in the Broad-Line Region
Wen-Qiang Liang, Zhi-Fu Chen, Rui-Jing Lu +8
The paper shows that the Baldwin effect in quasars is mainly driven by the gas density in the broad-line region, with higher Eddington ratios producing denser BLRs and shallower eq…
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…
The Detection Rate of Associated \mgii\ Absorption Lines in Quasars Depends on Their Radio Emission
Chen ZF, Luis C. Ho
In active galactic nuclei, jet-driven feedback plays a significant role in influencing the properties of gas within their host galaxy and the circumgalactic medium. By combining ob…
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…