Radio emission from dust-obscured galaxies

The coevolution of galaxies and their central supermassive black holes is a subject intense research. A class objects, the dust-obscured (DOGs) are particularly interesting in this respect as they thought to represent short evolutionary phase when violent star formation activity host galaxy may coexist with matter accretion onto hole powering active nucleus. Here we investigate different types DOGs classified by mid-infrared spectral energy distributions reveal whether can be distinguished arcsec-scale radio properties. Radio emission unaffected dust obscuration originate from both an We analyse large sample 661 complied literature find that only small fraction them ($\sim 2$ per cent) detected flux densities exceeding $\sim 1$ mJy Faint Images Sky at Twenty-Centimeters (FIRST) survey. These radio-detected objects almost exclusively `power-law' DOGs. Stacking analysis FIRST image cutouts centred on positions individually radio-undetected sources suggests weak present On other hand, `bump' marginally median-stacked image.