Search for surviving companions in type Ia supernova remnants

Kuo Chuan Pan, Paul M. Ricker, Ronald E. Taam

Research output: Contribution to journalArticlepeer-review

34 Scopus citations


The nature of the progenitor systems of type Ia supernovae (SNe Ia) is still unclear. One way to distinguish between the single-degenerate scenario and double-degenerate scenario for their progenitors is to search for the surviving companions (SCs). Using a technique that couples the results from multi-dimensional hydrodynamics simulations with calculations of the structure and evolution of main-sequence- (MS-) and helium-rich SCs, the color and magnitude of MS- and helium-rich SCs are predicted as functions of time. The SC candidates in Galactic type Ia supernova remnants (Ia SNR) and nearby extragalactic Ia SNRs are discussed. We find that the maximum detectable distance of MS SCs (helium-rich SCs) is 0.6-4 Mpc (0.4-16 Mpc), if the apparent magnitude limit is 27 in the absence of extinction, suggesting that the Large and Small Magellanic Clouds and the Andromeda Galaxy are excellent environments in which to search for SCs. However, only five Ia SNRs have been searched for SCs, showing little support for the standard channels in the singe-degenerate scenario. To better understand the progenitors of SNe Ia, we encourage the search for SCs in other nearby Ia SNRs.

Original languageEnglish (US)
Article number71
JournalAstrophysical Journal
Issue number1
StatePublished - Sep 1 2014


  • binaries
  • close methods
  • evolution subdwarfs supernovae
  • general supernovae
  • individual (SN 185, SN 1006, SN 1572, SN 1604, SNR 0509-67.5, SNR 0519-69.0)
  • numerical stars

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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