论文标题
漫画调查中揭示的更换AGN的主机星系特性
Host Galaxy Properties of Changing-look AGN Revealed in the MaNGA Survey
论文作者
论文摘要
更换活跃的银河系核（Cl-agns）是AGN的一个子集，其中宽的Balmer发射线在几年内出现或消失。我们在Apache Point天文台（漫画）调查中使用附近星系的映射来识别五个Cl-agns。与一般的AGN宿主相比，二维光度图和运动图揭示了CL-AGN宿主的常见特征以及一些异常特性。所有漫画Cl-agns都居住在星形的主序列中，类似于漫画非变化的AGNS（NCL-AGNS）。我们的Cl-agns的$ 80 \％\ pm 16 \％$确实具有伪磅功能，并遵循总体NCL-AGNS $ M_ {BH} -cient-σ_ {*} $关系。运动学测量表明它们在角动量与星系椭圆度的平面上具有相似的分布。然而，与一般星形式中的漫画Cl-agns相比（$ 1.84 \％\％\ pm 0.61 \％$）相比，反向旋转功能的较高（$ 20 \％\ pm 16 \％$）显示出更高但没有统计学意义（$ 20 \％\ pm 16 \％$）。此外，漫画Cl-agns比I型NCL-AGNS更喜欢面对面的面对面（轴比> 0.7美元）。这些结果表明，宿主星系可以在CL-AGN现象中发挥作用。
Changing-look Active Galactic Nuclei (CL-AGNs) are a subset of AGNs in which the broad Balmer emission lines appear or disappear within a few years. We use the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey to identify five CL-AGNs. The 2-D photometric and kinematic maps reveal common features as well as some unusual properties of CL-AGN hosts as compared to the AGN hosts in general. All MaNGA CL-AGNs reside in the star-forming main sequence, similar to MaNGA non-changing-look AGNs (NCL-AGNs). The $80\% \pm 16\%$ of our CL-AGNs do possess pseudo-bulge features, and follow the overall NCL-AGNs $M_{BH}-σ_{*}$ relationship. The kinematic measurements indicate that they have similar distributions in the plane of angular momentum versus galaxy ellipticity. MaNGA CL-AGNs however show a higher, but not statistically significant ($20\% \pm 16\%$) fraction of counter-rotating features compared to that ($1.84\% \pm 0.61\%$) in general star-formation population. In addition, MaNGA CL-AGNs favor more face-on (axis ratio $>$ 0.7) than that of Type I NCL-AGNs. These results suggest that host galaxies could play a role in the CL-AGN phenomenon.
