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MERGER-DRIVEN FUELING OF ACTIVE GALACTIC NUCLEI: SIX DUAL AND OF AGNs DISCOVERED WITH CHANDRA AND HUBBLE SPACE TELESCOPE OBSERVATIONS

  • Authors: Julia M. Comerford, David Pooley, R. Scott Barrows, Jenny E. Greene, Nadia L. Zakamska, Greg M. Madejski, and Michael C. Cooper

2015 The Astrophysical Journal 806 219.

  • Provider: AAS Journals

Caption: Figure 6.

Luminosities of the dual AGNs and dual/offset AGNs in comparison to the mass ratios of the galaxy mergers, measured as the ratio of the stellar bulge luminosities ﹩{L}_{*,1}/{L}_{*,2}﹩. Filled symbols illustrate the dual AGNs, while double symbols illustrate the dual/offset AGNs. Top: bolometric luminosity of each AGN, with the luminosity of the AGN in the more massive stellar bulge shown as a square and the luminosity of the AGN in the less massive stellar bulge shown as a circle. In the dual AGN system the more massive stellar bulge hosts the more luminous AGN. The dashed vertical line shows the ﹩{L}_{*,1}/{L}_{*,2}=3﹩ dividing line between major and minor mergers. Bottom: ratios of AGN bolometric luminosities for the dual AGNs and dual/offset AGNs, illustrating the relation ﹩{L}_{\mathrm{bol},1}/{L}_{\mathrm{bol},2}=({f}_{\mathrm{Edd},1}/{f}_{\mathrm{Edd},2})({L}_{*,1}/{L}_{*,2})﹩. The dotted line shows the case of ﹩{f}_{\mathrm{Edd},1}/{f}_{\mathrm{Edd},2}=1﹩, and all of the galaxies lie below this line. This demonstrates that the AGN in the less luminous stellar bulge has the higher accretion rate in all cases.

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