The red supergiant and supernova rate problems

Implications for core-collapse supernova physics

S. Horiuchi, K. Nakamura, T. Takiwaki, K. Kotake, M. Tanaka

    Research output: Contribution to journalArticle

    38 Citations (Scopus)

    Abstract

    Mapping supernovae to their progenitors is fundamental to understanding the collapse of massive stars.We investigate the red supergiant problem, which concerns why red supergiants with masses ~16-30M⊙ have not been identified as progenitors of Type IIP supernovae, and the supernova rate problem, which concerns why the observed cosmic supernova rate is smaller than the observed cosmic star formation rate. We find key physics to solving these in the compactness parameter, which characterizes the density structure of the progenitor. If massive stars with compactness above ξ 2.5 ~ 0.2 fail to produce canonical supernovae, (i) stars in the mass range 16-30M⊙ populate an island of stars that have high ξ 2.5 and do not produce canonical supernovae, and (ii) the fraction of such stars is consistent with the missing fraction of supernovae relative to star formation. We support this scenario with a series of two- and three-dimensional radiation hydrodynamics core-collapse simulations. Using more than 300 progenitors covering initial masses 10.8-75M⊙ and three initial metallicities, we show that high compactness is conducive to failed explosions. We then argue that a critical compactness of ~0.2 as the divide between successful and failed explosions is consistent with state-of-the-art three-dimensional core-collapse simulations. Our study implies that numerical simulations of core collapse need not produce robust explosions in a significant fraction of compact massive star initial conditions.

    Original languageEnglish
    Pages (from-to)L99-L103
    JournalMonthly Notices of the Royal Astronomical Society: Letters
    Volume445
    Issue number1
    DOIs
    Publication statusPublished - 2014

    Fingerprint

    supernovae
    physics
    explosion
    void ratio
    massive stars
    explosions
    simulation
    stars
    hydrodynamics
    star formation rate
    rate
    metallicity
    star formation
    coverings
    radiation

    Keywords

    • Stars: interiors
    • Stars: massive
    • Supernovae: general

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

    Cite this

    The red supergiant and supernova rate problems : Implications for core-collapse supernova physics. / Horiuchi, S.; Nakamura, K.; Takiwaki, T.; Kotake, K.; Tanaka, M.

    In: Monthly Notices of the Royal Astronomical Society: Letters, Vol. 445, No. 1, 2014, p. L99-L103.

    Research output: Contribution to journalArticle

    Horiuchi, S. ; Nakamura, K. ; Takiwaki, T. ; Kotake, K. ; Tanaka, M. / The red supergiant and supernova rate problems : Implications for core-collapse supernova physics. In: Monthly Notices of the Royal Astronomical Society: Letters. 2014 ; Vol. 445, No. 1. pp. L99-L103.
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