Do SN 2002cx-like and SN Ia-CSM objects share the same origin?

摘要: SN 2002cx-like and Ia-CSM objects show similar early spectra both belong to a young stellar population, suggesting that they could share the same progenitor origin. Adopting framework of common-envelope-wind (CEW) model developed in \citet{MENGXC17}, we here propose subclasses SNe Ia are caused by explosion hybrid carbon-oxygen-neon white dwarfs (CONe WDs) single-degenerate systems, where explode systems with massive common envelope (CE) $\sim1~M_{\odot}$, while events correspond those most CE has been lost wind. Using binary-population-synthesis (BPS) calculations, estimate number ratio between $\frac{1}{3}$ $\frac{2}{3}$, consistent observational constraints, an overall contribution from CONe WDs total population also matches observed these peculiar objects. Our predicts statistical sequence CSM density normal Ia, existing radio constraints. We find new subclass which properties Type II SNe, some do not have surviving companion. In cases even produce apparently single WDs.