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We present mid-infrared (MIR) imaging and spectroscopic data of the Seyfert 2galaxy Mrk 1066 obtained with CanariCam (CC) on the 10.4 m Gran TelescopioCANARIAS (GTC). The galaxy was observed in imaging mode with an angularresolution of 0.24 arcsec (54 pc) in the Si-2 filter (8.7 micron). The imagereveals a series of star-forming knots within the central ~400 pc, aftersubtracting the dominant active galactic nucleus (AGN) component. We alsosubtracted this AGN unresolved component from the 8-13 micron spectra of theknots and the nucleus, and measured equivalent widths (EWs) of the 11.3 micronPolycyclic Aromatic Hydrocarbon (PAH) feature which are typical of purestarburst galaxies. This EW is larger in the nucleus than in the knots,confirming that, at least in the case of Mrk 1066, the AGN dilutes, rather thandestroys, the molecules responsible for the 11.3 micron PAH emission. Bycomparing the nuclear GTC/CC spectrum with the Spitzer/IRS spectrum of thegalaxy, we find that the AGN component that dominates the continuum emission atwavelengths below 15 micron on scales of ~60 pc (90-100%) decreases to 35-50%when the emission of the central ~830 pc is considered. On the other hand, theAGN contribution dominates the 15-25 micron emission (75%) on the scales probedby Spitzer/IRS. We find a good match between the MIR morphology of Mrk 1066 andthe extended Pab, Brg and [O III] emission. This coincidence implies that the8.7 micron emission is probing star formation, dust in the narrow-line region,and the oval structure previously detected in the near-infrared. On the otherhand, the Chandra soft X-ray morphology does not match any of the previous,contrary to what it is generally assumed for Seyfert galaxies.

A mid-infrared view of the inner parsecs of the Seyfert galaxy Mrk 1066 using CanariCam/GTC