Feedback of Active Galactic Nuclei in Seyfert 2 Galaxies

Details Feedback of Active Galactic Nuclei in Seyfert 2 Galaxies Feedback of Active Galactic Nuclei in Seyfert 2 Galaxies

Oct 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008chjaa...8..537z&link_type=abstract

Chinese Journal of Astronomy and Astrophysics, Volume 8, Issue 5, pp. 537-546 (2008).

Astronomy and Astrophysics

Astrophysics

Scientific paper

It is well accepted that feedback from active galactic nuclei (AGNs) plays an important role in the coevolution of the supermassive black hole (SMBH) and its host galaxy, but the concrete mechanism of feedback remains unclear. A considerable body of evidence suggests that AGN feedback suppresses star formation in the host galaxy. We assemble a sample of Seyfert 2 galaxies with recent observational data of compact nuclear starbursts and estimate the gas surface density as a function of column density to illuminate the relation between feedback and AGN properties. Although there are some uncertainties, our data still imply the deviation from the star formation law (Kennicutt-Schmidt law). Further, they indicate that: (1) Feedback correlates with the Eddington ratio, rather than with the mass of SMBH, as a result of decreasing star formation efficiency. (2) The SMBH and the torus are probably undergoing coevolution. Conclusions presented here can be refined through future high resolution CO or HCN observations.

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