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No signature of ejecta interaction with a stellar companion in three type Ia supernovae

Author

Listed:
  • Rob P. Olling

    (University of Maryland)

  • Richard Mushotzky

    (University of Maryland)

  • Edward J. Shaya

    (University of Maryland)

  • Armin Rest

    (Space Telescope Science Institute)

  • Peter M. Garnavich

    (University of Notre Dame)

  • Brad E. Tucker

    (Mt Stromlo Observatory, The Australian National University
    University of California)

  • Daniel Kasen

    (University of California
    Lawrence Berkeley National Laboratory)

  • Steve Margheim

    (Gemini Observatory, Southern Operations Center)

  • Alexei V. Filippenko

    (University of California)

Abstract

The explosion of a type Ia supernova could be triggered either by accretion from a companion—which should be indicated by brightening caused by interaction of supernova ejecta with the companion—or by a merger with a white dwarf or other small star; here observations by the Kepler mission of three type Ia supernovae reveal no such brightening, leading to the conclusion that they were triggered by a merger.

Suggested Citation

  • Rob P. Olling & Richard Mushotzky & Edward J. Shaya & Armin Rest & Peter M. Garnavich & Brad E. Tucker & Daniel Kasen & Steve Margheim & Alexei V. Filippenko, 2015. "No signature of ejecta interaction with a stellar companion in three type Ia supernovae," Nature, Nature, vol. 521(7552), pages 332-335, May.
    • Handle: RePEc:nat:nature:v:521:y:2015:i:7552:d:10.1038_nature14455
    DOI: 10.1038/nature14455
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