Galaxy disc brightness profiles differ across cosmic epochs in Euclid analysis

A post describing the study says profiles that steepen toward the outskirts account for around half the nearby sample. At a redshift close to one, profiles with shallower outer declines and those combining different kinds of breaks each reach approximately 30%. The authors suggest environmental influences may have played a greater role earlier, while gradual internal evolution becomes more important later. The post notes that brightness profiles do not pinpoint the causes, automated classifications have an estimated accuracy of around 70%, and the paper’s acceptance has not been confirmed.