论文标题
清除：空间分辨的发射线和主动银河核，$ 0.6 <z <1.3 $
CLEAR: Spatially Resolved Emission Lines and Active Galactic Nuclei at $0.6<z<1.3$
论文作者
论文摘要
We investigate spatially-resolved emission-line ratios in a sample of 219 galaxies ($0.6<z<1.3$) detected using the G102 grism on the \emph{Hubble Space Telescope} Wide Field Camera 3, taken as part of the CANDELS Ly$α$ Emission at Reionization (CLEAR) survey, to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN).我们分析了\ oiii \和\ hb \发射线图，从而使我们能够在样品中整个星系中空间解析\ oiiihb \发射线比。我们比较星系中心和外环区域中的\ oiiihb \ \比率，以测量电离梯度并研究核离子化来源对宿主AGN的潜力。我们研究了一些候选者的单个星系，这些星系是容纳强核离子化的，发现它们通常具有低恒星质量，并且在X射线中未被发现，这是低质量AGN在低质量星系中所预期的。我们找不到大量核能外AGN或其他核外电离团的证据。我们对观察到的\ oiiihb \梯度的分布进行建模，发现大多数星系与小或零梯度一致，但是样品中6-16 \％的星系可能会托管核\ oiiihb \ the $ \ sim $ 0.5〜DEX的外部区域比其外部区域高。这项研究受到大多数测量\ oiiihb \空间概况的限制，因此，更深的数据，例如，从更深的\ textIt {hst}/wfc3程序或\ textit {jwst}/niriss中，需要更可靠地测量空间固定在空间上的较高的条件。
We investigate spatially-resolved emission-line ratios in a sample of 219 galaxies ($0.6<z<1.3$) detected using the G102 grism on the \emph{Hubble Space Telescope} Wide Field Camera 3, taken as part of the CANDELS Ly$α$ Emission at Reionization (CLEAR) survey, to measure ionization profiles and search for low-luminosity active galactic nuclei (AGN). We analyze \OIII\ and \Hb\ emission-line maps, enabling us to spatially resolve the \OIIIHb\ emission-line ratio across the galaxies in the sample. We compare the \OIIIHb\ ratio in galaxy centers and outer annular regions to measure ionization gradients and investigate the potential of sources with nuclear ionization to host AGN. We investigate some of the individual galaxies that are candidates to host strong nuclear ionization and find that they often have low stellar mass and are undetected in X-rays, as expected for low-luminosity AGN in low-mass galaxies. We do not find evidence for a significant population of off-nuclear AGN or other clumps of off-nuclear ionization. We model the observed distribution of \OIIIHb\ gradients and find that most galaxies are consistent with small or zero gradients, but 6-16\% of galaxies in the sample are likely to host nuclear \OIIIHb\ that is $\sim$0.5~dex higher than in their outer regions. This study is limited by large uncertainties in most of the measured \OIIIHb\ spatial profiles, therefore deeper data, e.g, from deeper \textit{HST}/WFC3 programs or from \textit{JWST}/NIRISS, are needed to more reliably measure the spatially resolved emission-line conditions of individual high-redshift galaxies.
