# New constraints on binary evolution enhance the supernova type Ia rate

## TL;DR

This paper demonstrates that incorporating new insights into binary evolution significantly increases the predicted rate of Type Ia supernovae from the single degenerate channel, impacting our understanding of their progenitors.

## Contribution

It introduces updated binary evolution constraints that enhance the predicted SNIa rate from the single degenerate pathway, refining progenitor models.

## Key findings

- SNIa rate from SD channel is increased with new binary evolution constraints.
- Constraints from abundances and light curve signatures are discussed.
- Enhanced understanding impacts progenitor evolution models.

## Abstract

Even though Type Ia supernovae (SNIa) play an important role in many fields in astronomy, the nature of the progenitors of SNIa remain a mystery. One of the classical evolutionary pathways towards a SNIa explosion is the single degenerate (SD) channel, in which a carbon-oxygen white dwarf accretes matter from its non-degenerate companion until it reaches the Chandrasekhar mass. Constraints on the contribution from the SD channel to the overall SNIa rate come from a variety of methods, e.g. from abundances, from signatures of the companion star in the light curve or near the SNIa remnant, and from synthetic SNIa rates. In this proceedings, I show that when incorporating our newest understandings of binary evolution, the SNIa rate from the single degenerate channel is enhanced. I also discuss the applicability of these constraints on the evolution of SNIa progenitors.