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arXiv 2208.06451astro-ph.GA
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揭示星系对系统IRAS 05589+2828和2 MASX J06021107 +2828382中双AGN的性质

Unravelling the nature of the dual AGN in the galaxy pair system IRAS 05589+2828 and 2MASX J06021107+2828382

E. Benítez, E. Jiménez-Bailón, C. A. Negrete, D. Ruschel-Dutra, J. M. Rodríguez-Espinosa, I. Cruz-González, L. F. Rodríguez, V. H. Chavushyan, P. Marziani, L. G… 展开作者

E. Benítez, E. Jiménez-Bailón, C. A. Negrete, D. Ruschel-Dutra, J. M. Rodríguez-Espinosa, I. Cruz-González, L. F. Rodríguez, V. H. Chavushyan, P. Marziani, L. Gutiérrez, O. González-Martin, B. W. Jiang, M. D'Onofrio

摘要:

我们已经研究了以前检测到的双重AGN系统的星系对IRAS 05589+2828和2 MASX J 06021107 +2828382的核区域,通过新的光学光谱观测,以及无线电和X射线档案数据。我们的多波长数据强烈地表明Sy 1 \iras \,(z=0.0330 $\pm$ 0.0002)与Sy 2 \twomas \,(z=0.0334 $\pm$ 0.0001)符合一个双重活动星系核系统,从射电数据得到的预计分离为20.08 \arcsec \,($\sim$ 13.3\,kpc)。光谱分析显示,在两个活动星系核之间,H $α$和[OIII]发出微弱的窄扩展发射,支持了正在进行的合并的证据。\iras是活动星系核的双组分窄发射线,具有复杂的宽巴耳末发射线轮廓,清楚地显示出速度移动为$\sim$ 3500\,km\,s $^{-1}$的强红峰。\iras \和\twomas \的黑洞质量估计分别为log\,M $\rm_{BH}$ \,=\,8.59\,$\pm$\,0.14(M $_\odot$)和log\,M $\rm_{BH}$ \,=\,8.21 $\pm$ 0.2(M $_\odot$)。在X射线波段,\iras \与1型天体兼容,显示出光谱和通量的变化。\chandra \,2 MASX\,J 06021107 +2828382的数据使我们能够在这个源中测量到高硬度比,为2型活动星系核提供了证据。使用{ \it Karl G. Jansky甚大阵发现这两个活动星系核都是致密的射电天体,光谱指数分别为-0.26 PDMATHAMN 0.03和-0.70 PDMATHAMN 0.11,首次证实了它在射电波段的双重活动星系核性质。

英文摘要:

We have studied the nuclear region of the previously detected dual AGN system in the galaxy pair IRAS 05589+2828 and 2MASX J06021107+2828382 through new optical spectroscopy observations, along with radio and X-ray archival data. Our multiwavelength data strongly suggest that the Sy1 \iras\, (z=0.0330$\pm$0.0002) conforms to a dual AGN system with the Sy2 \twomas\, (z=0.0334$\pm$0.0001) with a projected separation obtained from the radio data of 20.08\arcsec\, ($\sim$13.3\,kpc). Analysis of the optical spectra reveals a faint narrow extended emission from H$α$ and [OIII] amidst the two AGN, supporting evidence for an ongoing merger. \iras\, is a double component narrow emission line AGN, with complex broad Balmer emission line profiles that clearly show a strong red-peaklet with a velocity shift of $\sim$3500\,km\,s$^{-1}$. The black hole mass estimates of \iras\, and \twomas\, are log\,M$\rm_{BH}$\,=\,8.59\,$\pm$\,0.14 (M$_\odot$) and log\,M$\rm_{BH}$\,=\,8.21$\pm$0.2 (M$_\odot$), respectively. In the X-ray bands, \iras\, is compatible with a Type 1 object, showing both spectral and flux variability. \chandra\, data of 2MASX\,J06021107+2828382 allowed us to measure a high hardness ratio in this source, providing evidence for a Type 2 AGN. The 22 GHz image obtained with the {\it Karl G. Jansky Very Large Array} has revealed that both AGN are compact radio objects with spectral indices -0.26$\pm$0.03 and -0.70$\pm$0.11, confirming for the first time its dual AGN nature in the radio bands.

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