Double CO WD systems from the WD+He subgiant channel and type Ia supernovae
Recent studies suggested that at least some of the observed SNe Ia originate from the double-degenerate model, which involves the merging of double carbon-oxygen white dwarfs (CO WDs).However, seal cookie cutter the delay time distributions predicted by previous theoretical studies are inconsistent with the observed SNe Ia at the early epoches of 8