来自SDSS的三个壮观的HII埋AGN星系
Three Spectacular HII-buried-AGN Galaxies from SDSS
摘要：
通过研究从SDSS中提取的三个HII型活动星系核的光谱，对它们进行了分析：SDSS J 091053 +333008、SDSS J121837+091324和SDSS J153002-020415。三个星系BPT诊断图的位置表明，窄发射线主要来自HII区。而在去除宿主星系的恒星辐射后，其辐射线呈现出典型的类窄线塞弗特1特征。这三个天体都具有大的爱丁顿比、小的黑洞质量和低的恒星形成率。我们认为这三个星系正处于从星暴主导阶段到活动星系核主导阶段的过渡阶段。
英文摘要：
We present our analysis of the three HII-buried-AGN: SDSS J091053+333008, SDSS J121837+091324, and SDSS J153002-020415, by studying their optical spectra extracted from SDSS. The location in the BPT diagnostic diagrams of the three galaxies indicates that the narrow emission lines are mainly exited from HII regions. However, after the removal of the host galaxy's stellar emission, the emission lines display the typical feature of Narrow-line Seyfert 1-like. All of the three objects have large Eddington ratio, small black hole mass, and low star formation rate. We propose that the three galaxies are at the transit stage from the starburst-dominated phase to AGN-dominated phase.
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