Data: 10.03.2026

Bruno Šlaus (UAM,PL)

AGN contribution within the SCUBA-2 detected sample of sub-mm sources

Streszczenie:
Since their discovery, galaxies detected in the sub-millimetre part of the spectrum have remained an important part of understanding galaxy evolution. Due to a very negative K-correction, these sources can be observed up to very high redshifts (z=8). Physically, they correspond to dusty star-forming galaxies. However, due to exceedingly high numbers (much larger than the local ULIRGs) and levels of star formation, they have placed significant constraints onto the galaxy evolution models, which try to explain their evolution, fate and origin. One way to explain their origin (deduced from comparison with the local ULIRG sources) is to invoke a need for mergers. Accepting this picture, it is reasonable to assume that sub-millimetre galaxies also exhibit AGN activity, triggered by the mergers. The aim of this work is to estimate the prevalence of AGN activity within our sub-millimetre sample. We use a SCUBA-2 detected survey, aimed at the COSMOS and UDS fields, which we cross-correlate with multi-wavelength data. Using data at different frequencies we try to estimate the AGN contribution within our sample. This result, in turn, sheds light onto the origin of sub-millimetre emission.