2 papers
astro-ph.GA2025
Dependence of 4000Å~ break strength on narrow emission line properties in local Type-2 AGN
Zhang XueGuang
In this manuscript, we report evidence to support the dependence of D{\it n}4000 (4000Å~ break strength to trace stellar ages) on central AGN activity traced by narrow emission lin…
astro-ph.GA2022
Estimating sizes of Type 2 AGN narrow-line regions from multiple survey spectra -- a demonstration
Zhang XueGuang, Zhao YuanBo
In the Letter, an interesting method is proposed to estimate size of narrow emission lines regions (NLRs) of a Type-2 AGN SDSS J083823.91+490241.1 (=SDSS J0838) at a redshift of 0.…