Signatures of a surviving helium-star companion in Type Ia supernovae and constraints on the progenitor companion of SN 2011fe

Abstract

Single-degenerate (SD) binary systems composed of a white dwarf and a non-degenerate helium (He)-star companion have been proposed as the potential progenitors of Type Ia supernovae (SNe Ia). The He-star companions are expected to survive the SN Ia explosion in this SD progenitor model. In the present work, we map the surviving He-star companion models computed from our previous three-dimensional hydrodynamical simulations of ejecta-companion interaction into the one-dimensional stellar evolution code MESA to follow their long-term evolution to make predictions on their post-impact observational properties, which can be helpful for searches of such surviving He-star companions in future observations. By comparing with the very late-epoch light curve of the best observed SN Ia, SN 2011fe, we find that our surviving He-star companions become significantly more luminous than SN 2011fe about 1000d after the maximum light. This suggests that a He star is very unlikely to be a companion to the progenitor of SN 2011fe.

14 pages, 8 figures, 1 table, accepted for publication in ApJ

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Cited by in corpus (10)

• Type Ia Supernova Explosions in Binary Systems: A Review
• No Surviving SN Ia Companion In SNR 0509-67.5: Stellar Population Characterization and Comparison To Models
• Type Ia supernova ejecta-donor interaction: explosion model comparison
• A possible surviving companion of the SN Ia in the Galactic SNR G272.2-3.2
• Long-term evolution of post-explosion Helium-star Companions of Type Iax Supernovae
• The HST Non-Detection of SN Ia 2011fe 11.5yr After Explosion Further Restricts Single-Degenerate Progenitor Systems
• The core degenerate scenario for the type Ia supernova SN 2020eyj
• On the rotation properties of a post-explosion helium-star companion in Type Iax supernovae
• MAUVE: An Ultraviolet Astrophysics Probe Mission Concept
• The evolution of relative frequencies of ONe and CO SNe Ia