Delving deep: A population of extremely dusty dwarfs observed by JWST

Aims. We take advantage of the NIRCam photometric observations available as part of the Cosmic Evolution Early Release Science survey (CEERS) to identify and analyse very red sources in an effort to discover very dusty star forming galaxies.Methods. We select red galaxies as objects with a S/N ?>?3 at 4.4 & mu;m and a S/N ?& lambda;?& LE;?2 ?& mu;m, which corresponds to [F200W]-[F444W]> 1.2 considering CEERS depths. This selection is ideal to identify very dusty (A(V)?>?1 mag) galaxies with stellar masses between 10(6) and 10(10)?M-& ODOT; at z ??18 due to the Lyman absorption, independently of their dust extinction.Results. Our sample of F200W-dropouts contains no strong candidates at z ?>?6.5, instead it consists almost completely (& SIM;81%) of z ??1), but they are generally more massive > 10(7.5)?M-& ODOT;.