Co-Evolution of Star Formation and Accretion in Galaxies: an Alternative Paradigm ?

Details Co-Evolution of Star Formation and Accretion in Galaxies: an Alternative Paradigm ? Co-Evolution of Star Formation and Accretion in Galaxies: an Alternative Paradigm ?

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..408..315e&link_type=abstract

The Starburst-AGN Connection. ASP Conference Series, Vol. 408, proceedings of the conference held 27-31 October 2008, at Shangha

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a new technique to invert galaxy counts in the infrared into an evolution of the total infrared luminosity function and cosmic star formation rate (SFR) history (from Le Borgne, Elbaz, Ocvirck & Pichon 2009). It is found that the SFR history followed a path parallel to the one of the history of accretion over the Hubble time. We then discuss a scenario for the coevolution of star formation and AGN activity based on the example of HE0450-2958 and more distant quasars (Elbaz 2009, in prep.). In this scenario, the formation of supermassive black holes (SMBH) happens prior to the main event of star formation in the host galaxy. The pre-existing AGN would then actively participate to the mass growth of its host galaxy, e.g. by jet-induced star formation.

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