The first 3D radiation-hydrodynamics simulations of stripped yellow supergiant envelopes produce order-of-magnitude luminosity variability on tens-of-day timescales and episodic mass loss, explaining dense circumstellar material around Type IIb supernovae.
Pulsations in red supergiants with high L/M ratio -- Implications for the stellar and circumstellar structure of supernova progenitors
6 Pith papers cite this work, alongside 6 external citations. Polarity classification is still indexing.
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Pith papers citing it
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external citations · Pith
abstract
We investigate the pulsational properties of RSG models --- which we evolve from ZAMS masses in the range 10 to $20 \Msun$ --- by means of linear and non-linear calculations. We find period and growth rate of the dominant fundamental mode to increase with increasing luminosity-to-mass ratio $L/M$. Our models obtain relatively large $L/M$ values due to the inclusion of rotation in the evolutionary calculations; however, the largest values are obtained at and beyond central He-exhaustion due to major internal rearrangements of the nuclear burning regions. Our non-linear calculations as well as the behavior of the linear period and growth rate of the pulsations for periods approaching the Kelvin-Helmholtz time scale of the H-rich stellar envelope point towards the possibility of large amplitude pulsations. Such properties are similar to that found in AGB stars and suggest the possibility of a ``superwind'' to occur before the RSGs explode as supernovae. We conclude that changes in global stellar properties during the last few $10^4 \yr$ before core collapse may lead to drastic changes in the pulsational and wind properties of pre-supernova stars, with marked consequences for the immediate pre-supernova structure of the star and the circumstellar medium. We compare our results with observations of long-period OH/IR variables and discuss observational evidence for our scenario from observed supernova light curves, spectra and remnants.
representative citing papers
Time-dependent mass loss combined with non-equilibrium chemistry predicts silicate and alumina dust masses up to 3e-3 solar masses in red supergiant winds, with clumpy structures explaining observed fluxes of SN 2023ixf.
Coevolving super-Eddington black holes and nuclear starbursts in high-redshift halos naturally generate the V-shaped UV-to-optical spectra and weak high-energy emission of little red dots.
An L/M-dependent red supergiant wind law drives runaway envelope stripping, allowing ~20 solar-mass stars to form Wolf-Rayet stars as single stars.
COMPAS v03.22.01 adds new prescriptions for stellar winds, rotation, supernovae, mass transfer, common envelopes, tides, and gravitational-wave radiation to the rapid binary population synthesis code.
citing papers explorer
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Type IIb Supernova Progenitors in 3D: Variability and Episodic Mass Loss revealed by Radiation-Hydrodynamics Simulations
The first 3D radiation-hydrodynamics simulations of stripped yellow supergiant envelopes produce order-of-magnitude luminosity variability on tens-of-day timescales and episodic mass loss, explaining dense circumstellar material around Type IIb supernovae.
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On the Origin of a Dusty Circumstellar Medium around Red Supergiants
Time-dependent mass loss combined with non-equilibrium chemistry predicts silicate and alumina dust masses up to 3e-3 solar masses in red supergiant winds, with clumpy structures explaining observed fluxes of SN 2023ixf.
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Spectral Uniformity of Little Red Dots: A Natural Outcome of Coevolving Seed Black Holes and Nascent Starbursts
Coevolving super-Eddington black holes and nuclear starbursts in high-redshift halos naturally generate the V-shaped UV-to-optical spectra and weak high-energy emission of little red dots.
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Wolf-Rayet formation through L/M-dependent superwinds
An L/M-dependent red supergiant wind law drives runaway envelope stripping, allowing ~20 solar-mass stars to form Wolf-Rayet stars as single stars.
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Rapid stellar and binary population synthesis with COMPAS: methods paper II
COMPAS v03.22.01 adds new prescriptions for stellar winds, rotation, supernovae, mass transfer, common envelopes, tides, and gravitational-wave radiation to the rapid binary population synthesis code.
- Neutron star-companion interaction in core collapse supernovae. Population synthesis based on detailed binary evolution models