论文标题
双峰[O III]线与确认双AGN的双峰[O III]线
Dual AGN candidates with double-peaked [O III] lines matching that of confirmed dual AGNs
论文作者
论文摘要
我们进行了光谱分解，以在斯隆数字天空调查（SDSS）类星体中搜索双活动银河核（DAGNS），$ z <0.25 $。通过参考已知DAGN的双峰[O III]线的速度偏移和光谱形状来搜索潜在的DAGN候选物。在1271个SDSS类星体中，我们已经确定了77个DAGN候选人。光学和中红外诊断图用于研究DAGN候选物中的电离源。光学诊断分析表明，其中93％\％由AGN提供动力，中红外诊断分析表明97 \％由AGN提供动力。大约1/3的DAGN候选者的SDSS图像显示出潮汐相互作用的迹象，但是由于大多数样本可用的档案成像数据的空间分辨率低，因此我们在大多数情况下都无法识别双核。 DAGN候选人的无线电大部分（$ \ sim $ 10 \％）与典型的AGN相似。
We have performed a spectral decomposition to search for dual active galactic nuclei (DAGNs) in the Sloan Digital Sky Survey (SDSS) quasars with $z<0.25$. Potential DAGN candidates are searched by referencing velocity offsets and spectral shapes of double-peaked [O III] lines of known DAGNs. Out of 1271 SDSS quasars, we have identified 77 DAGN candidates. Optical and mid-infrared diagnostic diagrams are used to investigate the ionizing source in the DAGN candidates. The optical diagnostic analysis suggests 93\% of them are powered by AGNs, and mid-infrared diagnostic analysis suggests 97\% are powered by AGNs. About 1/3 of the SDSS images of the DAGN candidates show signs of tidal interaction, but we are unable to identify double nuclei in most of them due to the low spatial resolution of the archival imaging data available for most of the sample. The radio-loud fraction of the DAGN candidates ($\sim$10\%) is similar to that of typical AGNs.
