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Olling RP, Mushotzky R, Shaya EJ, et al. No signature of ejecta interaction with a stellar companion in three type Ia supernovae. Nature. 2015;521(7552):332-5doi: 10.1038/nature14455.
Olling, R. P., Mushotzky, R., Shaya, E. J., Rest, A., Garnavich, P. M., Tucker, B. E., Kasen, D., Margheim, S., & Filippenko, A. V. (2015). No signature of ejecta interaction with a stellar companion in three type Ia supernovae. Nature, 521(7552), 332-5. https://doi.org/10.1038/nature14455
Olling, Rob P, et al. "No signature of ejecta interaction with a stellar companion in three type Ia supernovae." Nature vol. 521,7552 (2015): 332-5. doi: https://doi.org/10.1038/nature14455
Olling RP, Mushotzky R, Shaya EJ, Rest A, Garnavich PM, Tucker BE, Kasen D, Margheim S, Filippenko AV. No signature of ejecta interaction with a stellar companion in three type Ia supernovae. Nature. 2015 May 21;521(7552):332-5. doi: 10.1038/nature14455. PMID: 25993963.
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Nature. 2015 May 21;521(7552):332-5. doi: 10.1038/nature14455.

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

Nature

Rob P Olling, Richard Mushotzky, Edward J Shaya, Armin Rest, Peter M Garnavich, Brad E Tucker, Daniel Kasen, Steve Margheim, Alexei V Filippenko

Affiliations

  1. Astronomy Department, University of Maryland, College Park, Maryland 20742-2421, USA.
  2. Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, Maryland 21218, USA.
  3. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, USA.
  4. 1] Mt Stromlo Observatory, The Australian National University, via Cotter Road, Weston Creek, Australian Capital Territory 2611, Australia [2] Department of Astronomy, University of California, Berkeley, California 94720-3411, USA.
  5. 1] Department of Astronomy, University of California, Berkeley, California 94720-3411, USA [2] Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA.
  6. Gemini Observatory, Southern Operations Center, c/o AURA, Casilla 603, La Serena, Chile.
  7. Department of Astronomy, University of California, Berkeley, California 94720-3411, USA.

PMID: 25993963 DOI: 10.1038/nature14455

Abstract

Type Ia supernovae are thought to be the result of a thermonuclear runaway in carbon/oxygen white dwarfs, but it is uncertain whether the explosion is triggered by accretion from a non-degenerate companion star or by a merger with another white dwarf. Observations of a supernova immediately following the explosion provide unique information on the distribution of ejected material and the progenitor system. Models predict that the interaction of supernova ejecta with a companion star or circumstellar debris lead to a sudden brightening lasting from hours to days. Here we present data for three supernovae that are likely to be type Ia observed during the Kepler mission with a time resolution of 30 minutes. We find no signatures of the supernova ejecta interacting with nearby companions. The lack of observable interaction signatures is consistent with the idea that these three supernovae resulted from the merger of binary white dwarfs or other compact stars such as helium stars.

References

  1. Nature. 2011 Dec 14;480(7377):344-7 - PubMed
  2. Nature. 2011 Dec 14;480(7377):348-50 - PubMed

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