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Evidence from stable isotopes and 10Be for solar system formation triggered by a low-mass supernova

Author

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  • Projjwal Banerjee

    (School of Physics and Astronomy, University of Minnesota)

  • Yong-Zhong Qian

    (School of Physics and Astronomy, University of Minnesota)

  • Alexander Heger

    (Monash Centre for Astrophysics, School of Physics and Astronomy, Monash University
    Center for Nuclear Astrophysics, Shanghai Jiao Tong University)

  • W C Haxton

    (University of California, and Lawrence Berkeley National Laboratory)

Abstract

About 4.6 billion years ago, some event disturbed a cloud of gas and dust, triggering the gravitational collapse that led to the formation of the solar system. A core-collapse supernova, whose shock wave is capable of compressing such a cloud, is an obvious candidate for the initiating event. This hypothesis can be tested because supernovae also produce telltale patterns of short-lived radionuclides, which would be preserved today as isotopic anomalies. Previous studies of the forensic evidence have been inconclusive, finding a pattern of isotopes differing from that produced in conventional supernova models. Here we argue that these difficulties either do not arise or are mitigated if the initiating supernova was a special type, low in mass and explosion energy. Key to our conclusion is the demonstration that short-lived 10Be can be readily synthesized in such supernovae by neutrino interactions, while anomalies in stable isotopes are suppressed.

Suggested Citation

  • Projjwal Banerjee & Yong-Zhong Qian & Alexander Heger & W C Haxton, 2016. "Evidence from stable isotopes and 10Be for solar system formation triggered by a low-mass supernova," Nature Communications, Nature, vol. 7(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13639
    DOI: 10.1038/ncomms13639
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