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Abstract: We investigate the role of host galaxy classification and black hole mass ina heterogeneous sample of 276 mostly nearby z<0.1 X-ray and IR selected AGN.Around 90% of Seyfert 1 AGN in bulge-dominated host galaxies without diskcontamination span a very narrow range in the observed 12um to 2-10keVluminosity ratio 199% confidence. Using ring morphology of the hostgalaxy as a proxy for lack of tidal interaction, we find that AGN luminosity inhost galaxies within 70Mpc is independent of host galaxy interaction for $\sim$Gyrs, suggesting that the timescale of AGN activity due to secular evolution ismuch shorter than that due to tidal interactions. We find that LINER hosts havelower 12um luminosity than the median 12um luminosity of normal disk- andbulge-dominated galaxies which may represent observational evidence for pastepochs of feedback that supressed star formation in LINER host galaxies. Wepropose that nuclear ULXs may account for the X-ray emission from LINER 2swithout flat-spectrum, compact radio cores. We confirmed the robustness of ourresults in X-rays by comparing them with the 14-195keV 22-month BAT survey ofAGN, which is all-sky and unbiased by photoelectric absorption.



Autor: Barry McKernan CUNY-AMNH, K.E.Saavik Ford CUNY-AMNH, Chris Reynolds UMd

Fuente: https://arxiv.org/



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