AUTHOR=Raimundo Sandra I. 

TITLE=Tracing the External Origin of the AGN Gas Fueling Reservoir

JOURNAL=Frontiers in Astronomy and Space Sciences

VOLUME=4

YEAR=2018

URL=https://www.frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2017.00069

DOI=10.3389/fspas.2017.00069

ISSN=2296-987X

ABSTRACT=<p>Near-infrared observations of the active galaxy MCG–6-30-15 provide strong evidence that its molecular gas fueling reservoir is of external origin. MCG–6-30-15 has a counter-rotating core of stars within its central 400 pc and a counter-rotating disc of molecular gas that extends as close as ~50–100 pc from the central black hole. The gas counter-rotation establishes that the gas reservoir in the center of the galaxy originates from a past external accretion event. In this contribution we discuss the gas and stellar properties of MCG–6-30-15, its past history and how the findings on this galaxy can be used to understand AGN fueling in S0 galaxies with counter-rotating structures.</p>