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We investigate the relationship between black hole accretion and starformation in a sample of 453 $z\approx0.3$ type 1 active galactic nuclei(AGNs). We use available CO observations to demonstrate that the combination ofnebular dust extinction and metallicity provides reliable estimates of themolecular gas mass even for the host galaxies of type 1 AGNs. Consistent withother similar but significantly smaller samples, we reaffirm the notion thatpowerful AGNs have comparable gas content as nearby star-forming galaxies andthat AGN feedback does not deplete the host of cold gas instantaneously. Wedemonstrate that while the strong correlation between star formation rate andblack hole accretion rate is in part driven by the mutual dependence of theseparameters on molecular gas mass, the star formation rate and black holeaccretion rate are still weakly correlated after removing the dependence ofstar formation rate on molecular gas mass. This, together with a positivecorrelation between star formation efficiency and black hole accretion rate,may be interpreted as evidence for positive AGN feedback.

Black Hole Accretion Correlates with Star Formation Rate and Star Formation Efficiency in Nearby Luminous Type 1 Active Galaxies