论文标题
根据SED拟合，确定活性银河核宿主星系的恒星形成速率
Determining star formation rates of active galactic nuclei host galaxies based on SED fitting with sub-mm data
论文作者
论文摘要
我们根据光谱能分布（SED）分析（SED）分析呈现恒星形成速率（SFR）测量，并与新的亚MM通量结合了档案多波长数据，以z $ <0.2 $的52个AGN宿主星系的样本。我们在James Clerk Maxwell望远镜上使用Scuba-2摄像头进行了亚MM观测，并为每个目标获得了450和850 $μ$ m的通量或上限。通过实验SED拟合中AGN粉尘成分的效果，我们发现，如果忽略AGN贡献，则可以高估粉尘光度。与基于灰尘光度的SFR相比，基于4000Å断裂的SFR显示出显着的偏移，但通过人工神经网络获得的SFR（Ellison等人，2016年）通常显示出一致性，尽管具有较大的散射。我们发现SFR与[OIII] $λ5007$发射线所表现出的AGN流出强度相关，并且Eddington比率较高和更强的流出的AGN通常由具有较高SFR的星系托管，这与Woo等人报告的相关性一致。 （2020）。这表明由于AGN反馈而没有瞬时淬灭恒星形成。
We present the star formation rate (SFR) measurements based on the spectral energy distribution (SED) analysis with new sub-mm fluxes combined with archival multi-wavelength data for a sample of 52 AGN host galaxies at z $<0.2$. We carried out sub-mm observations using the SCUBA-2 camera at the James Clerk Maxwell Telescope, and obtained flux or an upper limit at 450 and 850 $μ$m for each target. By experimenting the effect of the AGN dust component in the SED fit, we find that dust luminosity can be overestimated if AGN contribution is ignored. While the SFR based on 4000Å break shows a significant offset compared to dust luminosity based SFR, the SFR obtained by the artificial neural network (Ellison et al. 2016) generally shows consistency albeit with a large scatter. We find that SFR correlates with AGN outflow strength manifested by the [OIII] $λ5007$ emission line, and that AGNs with higher Eddington ratios and stronger outflows are in general hosted by galaxies with higher SFR, which is consistent with the correlation reported by Woo et al. (2020). This suggests no instantaneous quenching of star formation due to AGN feedback.
