Type II-Plateau supernova radiation: dependences on progenitor and explosion properties

2013/05/15 by Luc Dessart, D. J. Hillier, D. John Hillier +2 · 15 citations
Physics and Astronomy · #Astro and Planetary Science #Astronomy #Astrophysics #Ejecta #Gamma-ray bursts and supernovae #Light curve #Metallicity #Pair-instability supernova #Physics #RADIUS #Red supergiant #Stars #Stellar, planetary, and galactic studies #Supergiant #Supernova #astro-ph.CO #astro-ph.SR

paper · pdf · doi:10.1093/mnras/stt861

Paper accepted to MNRAS

arxiv created 2013/05/15 · openalex publication_date 2013/06/11 · arxiv updated 2015/06/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We explore the properties of Type II-Plateau (II-P) supernovae (SNe) together with their red supergiant (RSG) star progenitors. Using mesa star, we modulate the parameters (e.g. mixing length, overshoot, rotation, metallicity) that control the evolution of a 15 M⊙ main-sequence star to produce a variety of physical pre-SN models and SN II-P ejecta. We extend previous modelling of SN II-P radiation to include photospheric and nebular phases, as well as multiband light curves and spectra. Our treatment does not assume local thermodynamic equilibrium, is time dependent, treats explicitly the effects of line blanketing and incorporates non-thermal processes. We find that the colour properties of SNe II-P require large model atoms for Fe i and Fe ii, much larger than previously adopted. The colour properties also imply RSG progenitors of limited extent (∼500 R⊙) – larger progenitor stars produce an SN II-P radiation that remains too blue for too long. This finding calls for a reduction of RSG radii, perhaps through a strengthening of convective energy transport in RSG envelopes. Increased overshoot and rotation reduce the ratio of ejecta to helium-core mass, similarly to an increase in main-sequence mass, and thus complicate the inference of progenitor masses. In contrast to the great sensitivity on progenitor radius, SN II-P colour evolution appears insensitive to variations in explosion energy. Finally, we document the numerous SN II-P signatures that vary with progenitor metallicity, revealing their potential for metallicity determinations in the nearby and distant Universe.

Citations

• The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought
• Turbulent Convection in Stellar Interiors. I. Hydrodynamic Simulation
• The evolution and explosion of massive stars
• Progenitors of Core-Collapse Supernovae
• Fundamental properties and atmospheric structure of the red supergiant VY Canis Majoris based on VLTI/AMBER spectro-interferometry

Cited by

• UBVRIz LIGHT CURVES OF 51 TYPE II SUPERNOVAE
• Inferring Explosion Properties from Type II-Plateau Supernova Light Curves
• Constraints on the explosion mechanism and progenitors of Type Ia supernovae
• SHOCK BREAKOUT AND EARLY LIGHT CURVES OF TYPE II-P SUPERNOVAE OBSERVED WITH KEPLER
• SN 2009ip and SN 2010mc: core-collapse Type IIn supernovae arising from blue supergiants
• Radiation-hydrodynamical modelling of underluminous Type II plateau supernovae
• Type II supernovae as distance indicators at near-IR wavelengths
• Spectral signatures of H-rich material stripped from a non-degenerate companion by a Type Ia supernova
• Explosion of red-supergiant stars: Influence of the atmospheric structure on shock breakout and early-time supernova radiation
• The surface abundances of red supergiants at core collapse
• Observed Type II supernova colours from the Carnegie Supernova Project-I
• The Early Phases of Supernova 2020pni: Shock-Ionization of the Nitrogen-Enriched Circumstellar Material
• Explosions of blue supergiants from binary mergers for SN 1987A
• SNe 2013K and 2013am: observed and physical properties of two slow, normal Type IIP events
• Extending Supernova Spectral Templates for Next-generation Space Telescope Observations

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