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Using new APEX and JCMT spectroscopy of the CO 2-1 line, we undertake acontrolled study of cold molecular gas in moderately luminous Active GalacticNuclei (AGN) and inactive galaxies from the Luminous Local AGN with MatchedAnalogs (LLAMA) survey. We use spatially resolved infrared photometry of theLLAMA galaxies from 2MASS, WISE, IRAS & Herschel, corrected for nuclearemission using multi-component spectral energy distribution (SED) fits, toexamine the dust-reprocessed star-formation rates (SFRs), molecular gasfractions and star formation efficiencies (SFEs) over their central 1 - 3 kpc.We find that the gas fractions and central SFEs of both active and inactivegalaxies are similar when controlling for host stellar mass and morphology(Hubble type). The equivalent central molecular gas depletion times areconsistent with the discs of normal spiral galaxies in the local Universe.Despite energetic arguments that the AGN in LLAMA should be capable ofdisrupting the observable cold molecular gas in their central environments, ourresults indicate that nuclear radiation only couples weakly with this phase. Wefind a mild preference for obscured AGN to contain higher amounts of centralmolecular gas, which suggests a connection between AGN obscuration and thegaseous environment of the nucleus. Systems with depressed SFEs are not foundamong the LLAMA AGN. We speculate that the processes that sustain the collapseof molecular gas into dense pre-stellar cores may also be a prerequisite forthe inflow of material on to AGN accretion disks.

LLAMA: Normal star formation efficiencies of molecular gas in the centres of luminous Seyfert galaxies