Search for Surviving Companions in Type Ia Supernova Remnants: Revisiting the main-sequence star channels
Shiau-Jie Rau1,2,3*, Kuo-Chuan Pan1,2,3,4
1Department of Physics, National Tsing Hua University, Hsinchu, Taiwan
2Institute of Astronomy, National Tsing Hua University, Hsinchu, Taiwan
3Center for Informatics and Computation in Astronomy, National Tsing Hua University, Hsinchu, Taiwan
4National Center for Theoretical Sciences, National Tsing Hua University, Hsinchu, Taiwan
* Presenter:Shiau-Jie Rau,
Recent theoretical and numerical studies of Type Ia supernova explosion within the single-degenerate scenario suggest that the non-degenerate companions could survive the supernova impact and could be luminous after the explosion. However, the surviving ex-companions are still not firmly detected in observations of nearby type Ia supernova remnants. In this project, we investigate the response of surviving companions via two-dimensional hydrodynamics simulations of supernova ejecta on binary companions and the subsequent long-term stellar evolution of surviving companions. We consider a wide range of possible hydrogen-rich companions and characterize the companion response systematically. Our results suggest that some of the single degenerate channels with a main-sequence star companion would favor a low mass (< 1M) companion in a close binary system at the onset of the explosion to explain the non-detection of surviving companions in nearby supernova remnants.

Keywords: hydrodynamics, binaries: close, methods: numerical, supernovae: general