论文标题
三重合并的AGN试验：多波长分类
AGN Triality of Triple Mergers: Multi-wavelength Classifications
论文作者
论文摘要
我们介绍了多波长分析的结果，该分析搜索附近的多个AGN系统（z <0.077）三重星系合并。结合了Chandra，SDSS，WISE和VLA观测值，我们量化了附近的三重AGN的速率，并研究了SMBH积聚与合并环境之间可能的连接。分析7个三重星系合并的多波长观测值，我们发现1个三重合并具有单个AGN（NGC 3341）；我们第一次发现4可能的双AGN（SDSS J1027+1749，SDSS J1631+2352，SDSS J1708+2153和SDSS J2356-1016）;我们确认一个三重AGN系统，SDSS J0849+1114；我们样本中的1个三重合并仍然模棱两可（SDSS J0858+1822）。分析明智的数据，我们发现增加了N_H（与主要AGN相关的）的趋势是增加W1-W2颜色的函数，这反映了在合并期间可以将大量的气体和灰尘运动耦合到合并环境中，在合并环境中，这两者都可以在合并期间将其插入活性中心区域。此外，我们发现样品中的一个三重AGN系统具有最高的N_H和W1-W2颜色，而双重AGN候选者的水平都较低。这些结果与理论合并模拟一致，这些模拟表明较高水平的核气更可能激活合并中的AGN。
We present results from a multi-wavelength analysis searching for multiple AGN systems in nearby (z<0.077) triple galaxy mergers. Combining archival Chandra, SDSS, WISE, and VLA observations, we quantify the rate of nearby triple AGN, as well as investigate possible connections between SMBH accretion and merger environments. Analyzing the multi-wavelength observations of 7 triple galaxy mergers, we find that 1 triple merger has a single AGN (NGC 3341); we discover, for the first time, 4 likely dual AGN (SDSS J1027+1749, SDSS J1631+2352, SDSS J1708+2153, and SDSS J2356-1016); we confirm one triple AGN system, SDSS J0849+1114; and 1 triple merger in our sample remains ambiguous (SDSS J0858+1822). Analyzing the WISE data, we find a trend of increasing N_H (associated with the primary AGN) as a function of increasing W1-W2 color, reflecting that the motions of gas and dust are coupled in merging environments, where large amount of both can be funneled into the active central region during mergers. Additionally, we find that the one triple AGN system in our sample has the highest levels of N_H and W1-W2 color, while the dual AGN candidates all have lower levels; these results are consistent with theoretical merger simulations that suggest higher levels of nuclear gas are more likely to activate AGN in mergers.
