On the Brightness of Surviving Companions in Type Ia Supernova Remnants

Abstract

The progenitor systems for type Ia supernovae are still controversial. One of the methods to test the proposed scenario for the progenitor systems is to identify companions that are supposed to survive according to the so-called single degenerate scenario. These companions might be affected by supernova ejecta. We present several numerical simulations of surviving red-giant companions whose envelopes were stripped and heated. We find that red-giants with less-massive helium cores ($\lesssim 0.30M_{\odot }$) can be so faint after the supernovae that we cannot detect them. In addition, we apply the results to the case of SNR 0509-67.5, and put constraints on the helium core mass, envelope stripping, and energy injection under the single degenerate scenario for type Ia supernovae.

10 pages, 8 figures, accepted for publication in PASJ

References in corpus (4)

• PTF11kx: A Type-Ia Supernova with a Symbiotic Nova Progenitor
• Tycho Brahe's 1572 supernova as a standard type Ia explosion revealed from its light echo spectrum
• Spectral Identification of an Ancient Supernova using Light Echoes in the LMC
• Single-Degenerate Type Ia Supernovae Are Preferentially Overluminous

Cited by in corpus (5)

• Comprehensive study of ejecta-companion interaction for core-collapse supernovae in massive binaries
• Binary companions of nearby supernova remnants found with Gaia
• PTF11kx: A Type Ia Supernova with Hydrogen Emission Persisting After 3.5 Years
• Formation pathway for lonely stripped-envelope supernova progenitors: implications for Cassiopeia A
• Helium emission from Balmer-dominated shocks in Type Ia supernova remnants provides constraints to their progenitor systems