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The Explosion and Progenitor Properties of Type IIP Supernovae Inferred from MESA and STELLA Modelling.

Wilson Ricks1, Vikram V Dwarkadas1

  • 1Dept. of Astronomy and Astrophysics, University of Chicago, 5640 S Ellis Ave., Chicago, IL 60637.

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This study models eight Type IIP supernovae (SNe) and their red supergiant progenitors. Most progenitors had initial masses under 19 solar masses, refining our understanding of supernova origins.

Keywords:
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Area of Science:

  • Astrophysics
  • Stellar Evolution
  • Supernovae

Background:

  • Red supergiants are the known progenitors of Type IIP supernovae.
  • However, their precise properties remain poorly constrained.
  • Understanding these progenitors is crucial for supernova astrophysics.

Purpose of the Study:

  • To investigate the explosion characteristics of eight Type IIP supernovae.
  • To determine the properties of their red supergiant progenitor stars.
  • To refine progenitor mass estimates using hydrodynamical modeling.

Main Methods:

  • Employing hydrodynamical modeling to simulate supernova explosions.
  • Utilizing the MESA stellar evolution code for progenitor models.
  • Simulating optical light curves with the STELLA code.
  • Fitting simulated data to observational data, including velocities.

Main Results:

  • Seven out of eight Type IIP supernovae analyzed had progenitor initial masses less than 19 M☉.
  • The modeling results generally favor lower progenitor mass estimates compared to previous studies.
  • One event, SN 2015ba, required a higher progenitor mass estimate, around 24 M☉.

Conclusions:

  • The study provides refined constraints on the masses of red supergiant progenitors for Type IIP supernovae.
  • Hydrodynamical modeling offers a valuable tool for investigating supernova progenitors.
  • The findings suggest a predominantly lower-mass range for these progenitors, with some exceptions.