We present subarcsecond resolution infrared ( IR ) imaging and mid-IR spectroscopic observations of the Seyfert 1.9 galaxy NGC 2992 , obtained with the Gemini North Telescope and the Gran Telescopio CANARIAS ( GTC ) .
The N-band image reveals faint extended emission out to \sim 3 kpc , and the PAH features detected in the GTC/CanariCam 7.5–13 \mu m spectrum indicate that the bulk of this extended emission is dust heated by star formation .
We also report arcsecond resolution MIR and far-IR imaging of the interacting system Arp 245 , taken with the Spitzer Space Telescope and the Herschel Space Observatory .
Using these data , we obtain nuclear fluxes using different methods and find that we can only recover the nuclear fluxes obtained from the subarcsecond data at 20-25 \mu m , where the AGN emission dominates .
We fitted the nuclear IR spectral energy distribution of NGC 2992 , including the GTC/CanariCam nuclear spectrum ( \sim 50 pc ) , with clumpy torus models .
We then used the best-fitting torus model to decompose the Spitzer/IRS 5–30 \mu m spectrum ( \sim 630 pc ) in AGN and starburst components , using different starburst templates .
We find that , whereas at shorter mid-IR wavelengths the starburst component dominates ( 64 % at 6 \mu m ) , the AGN component reaches 90 % at 20 \mu m. We finally obtained dust masses , temperatures and star formation rates for the different components of the Arp 245 system and find similar values for NGC 2992 and NGC 2993 .
These measurements are within those reported for other interacting systems in the first stages of the interaction .