The Hubble sequence: just a vestige of merger events?

摘要: Abr: We investigate whether the Hubble sequence can be reproduced by relics of merger events. verify that, at zmed=0.65, abundant population anomalous starbursts is mainly linked to local spirals. Their morphologies are dominated young stars and related their ionised-gas kinematics. show that both kinematics using gas modelling from Barnes' (2002) study major mergers. Using our estimate gas-to-stars transformation during a merger, we identify fraction in progenitors generally above 50%. All distant massive distributed along temporal first passage nuclei fusion then disk rebuilding phase. It confirms spiral scenario possibly an important channel for formation present-day disks Because half spirals had peculiar they could indeed mergers phases 6 Gyrs ago, almost all z~1. time now detail substructures, including bulge, disks, arms, bars, rings may originate instabilities created last merger.