Searches for new phenomena in final states with 3rd generation quarks using the ATLAS detector

Many theories beyond the Standard Model predict new phenomena, such as heavy vectors or scalar, and vector-like quarks, in final states containing bottom or top quarks. Such final states offer great potential to reduce the Standard Model background, although with significant challenges in reconstructing and identifying the decay products and modelling the remaining background. The recent results using proton-proton collision data from the ATLAS experiment recorded during the LHC Run 2 at a center-of-mass energy of 13~TeV, along with the associated improvements in identification techniques, will be reported.