论文标题
KASHZ：没有证据表明流出流出以$ z $$ \ sim $$ 1.4 $ - $ 2.6 $的中等光度AGN瞬时抑制星星形成
KASHz: No evidence for ionised outflows instantaneously suppressing star formation in moderate luminosity AGN at $z$$\sim$$1.4$-$2.6$
论文作者
论文摘要
作为我们在High-Redshift（Kashz）进行KMOS AGN调查的一部分，我们提出了空间分辨的VLT/KMO和VLT/SINFONI光谱数据以及ALMA 870 $ $ m continuum continuum continuum continuum continuum continuum continuum continuum continuum continum continum continum continum continum continum continum continum continum continum continum continum continue the八$ z $ = 1.4---2.6 $ 10^{45} $ ergs s $^{ - 1} $）。我们绘制[OIII]，h $α$和静止式FIR排放，以搜索离子化流量之间的任何空间反相关（由[OIII]线所追踪）和恒星形成（SF; h $α$和FIR所追踪），以前据称对某些高Z AGN和使用阳性和/或正面的Agn-agn Agn Feffeffer进行了据称，该反相关率（h $α$和FIR）。首先，我们得出的结论是，基于以下情况，h $α$无法在AGN宿主星系中映射SF：（i）从衰减校正的h $α$中推断出的SF速率可能在于从FIR推理的sf； （ii）FIR连续体比H $α$排放更紧凑，平均为$ \ sim 2 $； （iii）在我们的样本的一半中，我们观察到FIR和H $α$排放之间的显着空间偏移，平均偏移$ 1.4 \ pm0.6 $ kpc。其次，对于流出流的五个目标，我们没有发现使用H $α$或FIR作为示踪剂的流出和SF之间的空间反相关的证据。这有助于我们对著名的$ z $ = 1.6 X射线AGN（XID 2028'）进行重新分析，在此之前，以前已经声称积极反馈和负面反馈。根据我们的结果，电离流出对SF的任何影响都必须微妙，要么出现在我们的分辨率以下或长时间尺度上。
As part of our KMOS AGN Survey at High-redshift (KASHz), we present spatially-resolved VLT/KMOS and VLT/SINFONI spectroscopic data and ALMA 870$μ$m continuum imaging of eight $z$=1.4--2.6 moderate AGN ($L_{\rm 2-10 \rm kev}$ = $10^{42} - 10^{45}$ ergs s$^{-1}$). We map [OIII], H$α$ and rest-frame FIR emission to search for any spatial anti-correlation between ionised outflows (traced by the [OIII] line) and star formation (SF; traced by H$α$ and FIR), that has previously been claimed for some high-z AGN and used as evidence for negative and/or positive AGN feedback. Firstly, we conclude that H$α$ is unreliable to map SF inside our AGN host galaxies based on: (i) SF rates inferred from attenuation-corrected H$α$ can lie below those inferred from FIR; (ii) the FIR continuum is more compact than the H$α$ emission by a factor of $\sim 2$ on average; (iii) in half of our sample, we observe significant spatial offsets between the FIR and H$α$ emission, with an average offset of $1.4\pm0.6$ kpc. Secondly, for the five targets with outflows we find no evidence for a spatial anti-correlation between outflows and SF using either H$α$ or FIR as a tracer. This holds for our re-analysis of a famous $z$=1.6 X-ray AGN (`XID 2028') where positive and negative feedback has been previously claimed. Based on our results, any impact on SF by ionised outflows must be subtle, either occurring on scales below our resolution, or on long timescales.
