Abstract

COZIOL, R. et al. The Nature And Origin of Narrow Line AGN Activity in a Sample of Isolated SDSS Galaxies. Rev. mex. astron. astrofis [online]. 2011, vol.47, n.2, pp.361-383. ISSN 0185-1101.

We discuss the nature and origin of the nuclear activity observed in a sample of 292 SDSS narrow-emission-line galaxies, considered to have formed and evolved in isolation. The fraction of Narrow Line AGNs (NLAGNs) and Transition type Objects (TOs; a NLAGN with circumnuclear star formation) amounts to 64% of the galaxies. We verify that the probability for a galaxy to show an AGN characteristic increases with the bulge mass of the galaxy (Torres-Papaqui et al. 2011), and find evidence that this trend is really a by-product of the morphology, suggesting that the AGN phenomenon is intimately connected with the formation process of the galaxies. The NLAGNs in our sample are consistent with a scaled-down or powered-down versions of quasars and Broad Line AGNs.

Keywords : galaxies [active]; galaxies [formation].

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