English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Binary stellar evolution has been studied as important pathway to initiatevarious transient events like supernovae (SNe). Although the common envelope(CE) in a binary, outcomes of the CE and conditions for the SN explosion duringthe CE phase are uncertain, it has been suggested that SN explosions can betriggered during the CE phase. In this work, we explore formation and evolutionroutes of carbon/oxygen (CO) WDs binaries in order to investigate mergers of COWDs and cores of non-degenerate stars during the CE phase as possible originsfor SNe under the core merger detonation (CMD) scenario by considering severalbinary physical models. Evolution of CO WD + intermediate mass normal(non-degenerate and hydrogen-rich) star binaries lead to mergers during the CEphases still may trigger type Ia SNe (SNe Ia) interacting with circumstellarmaterial under different models. Mergers between CO WDs and cores of He(non-degenerate and helium-rich) stars within the CE phases are rare comparingto other CE merger events. These two channels may produce peculiar SNe Ia suchas over-luminous/super-chandrasekhar mass SNe Ia as certain fraction of themhave combined core masses $\geq2M_\odot$. In the channel of CO WD + massivestar ($\geq8M_\odot$) CE events, we find that rates of mergers between CO WDsand He cores of massive stars are (0.85 - 12.18)$\times10^{-5}{M_\odot}^{-1}$which may initiate type II superluminous SNe like SN 2006gy, and delay timesfrom this scenario are in the range of 34 - 120 Myr. Our results based on theCMD model are comparable with observational results of peculiar SNe.

The CO White Dwarf + Intermediate Mass/Massive Star Binary Evolution: Possible Merger Origins for Peculiar Type Ia and II Supernovae