Formation of black holes from He stars

Abstract

Massive He stars are potential candidates of type Ib/c supernova (SN) progenitors. Understanding their final fates remains a key issue in astrophysics. In this work, we investigate the evolution of He stars with initial masses from 5 $M_{\odot }$ to 65 $M_{\odot }$, focusing on the presupernova (pre-SN) core structures to assess their explodability. Our simulations indicate that the final core structure is determined by the CO core mass and the central 12C mass fraction at the end of core He burning, affecting the properties of central C-burning and the locations of convective shells. The location of the last convective C-burning shell sets the mass of the C-free core, constraining the iron core mass and compactness. We found that the final compactness and iron core mass exhibit non-monotonic behavior with initial mass, suggesting that the boundary between neutron star and black hole formation is not a simple mass threshold. This is due to core C/Ne burning becoming neutrino dominated. This process drives stronger core contraction, ultimately increasing the iron core mass and the final compactness. In contrast, earlier core Ne/O/Si ignition and shell mergers inhibit core contraction, reducing both the iron core mass and final compactness. We also discuss the effects of metallicity and overshooting on the pre-SN core structure. These factors potentially affect the explodability of progenitors.

References in corpus (76)

• Modules for Experiments in Stellar Astrophysics (MESA)
• Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• X-ray Properties of Black-Hole Binaries
• How Massive Single Stars End their Life
• Binary interaction dominates the evolution of massive stars
• Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions
• Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation
• Mind your Ps and Qs: the Interrelation between Period (P) and Mass-ratio (Q) Distributions of Binary Stars
• Core-Collapse Supernovae from 9 to 120 Solar Masses Based on Neutrino-powered Explosions
• Mass Loss: Its Effect on the Evolution and Fate of High-Mass Stars
• Compact Remnant Mass Function: Dependence on the Explosion Mechanism and Metallicity
• Physical Properties of Wolf-Rayet Stars
• Pre-Supernova Evolution of Massive Single and Binary Stars
• The evolution of rotating stars
• Black Hole Formation in Failing Core-Collapse Supernovae
• Formation of Double Neutron Star Systems
• Progenitor-Explosion Connection and Remnant Birth Masses for Neutrino-Driven Supernovae of Iron-Core Progenitors
• Type Ib/c supernovae in binary systems I. Evolution and properties of the progenitor stars
• A two-parameter criterion for classifying the explodability of massive stars by the neutrino-driven mechanism
• The Neutron Star and Black Hole Initial Mass Function
• The Compactness of Presupernova Stellar Cores
• The Overarching Framework of Core-Collapse Supernova Explosions as Revealed by 3D Fornax Simulations
• The 12C(a,g)16O reaction and its implications for stellar helium burning
• High Resolution Study of Presupernova Compactness
• The Evolution of Massive Helium Stars Including Mass Loss
• A Simple Approach to the Supernova Progenitor-Explosion Connection
• Pulsational pair-instability supernovae in very close binaries
• The Wolf-Rayet stars in the Large Magellanic Cloud: A comprehensive analysis of the WN class
• The Explosion of Helium Stars Evolved With Mass Loss
• On the nature of massive helium star winds and Wolf-Rayet-type mass loss
• Different to the core: the pre-supernova structures of massive single and binary-stripped stars
• The explosion mechanism of core-collapse supernovae: progress in supernova theory and experiments
• The expansion of stripped-envelope stars: consequences for supernovae and gravitational-wave progenitors
• On the minimum mass of neutron stars
• Pre-supernova evolution, compact object masses and explosion properties of stripped binary stars
• The impact of mass-loss on the evolution and pre-supernova properties of red supergiants
• A Systematic Survey of the Effects of Wind Mass Loss Algorithms on the Evolution of Single Massive Stars
• Evolution towards and beyond accretion-induced collapse of massive white dwarfs and formation of millisecond pulsars
• Towards a better understanding of the evolution of Wolf-Rayet stars and Type Ib/Ic supernova progenitors
• Towards a Realistic Explosion Landscape for Binary Population Synthesis
• Simulating Turbulence-aided Neutrino-driven Core-collapse Supernova Explosions in One Dimension
• Grids of stellar models with rotation IV. Models from 1.7 to 120 Msun at a metallicity Z = 0.0004
• Formation of High Mass X-ray Black Hole Binaries
• On the nature and detectability of Type Ib/c supernova progenitors
• Massive star evolution in close binaries:conditions for homogeneous chemical evolution
• Predictions for the hydrogen-free ejecta of pulsational pair-instability supernovae
• Advances in Understanding High-Mass X-ray Binaries with INTEGRAL and Future Directions
• Missing Red Supergiants and Carbon Burning
• Partial-envelope stripping and nuclear-timescale mass transfer from evolved supergiants at low metallicity
• Supernovae Ib and Ic from the explosion of helium stars
• Cyg X-3: a Galactic double black hole or black hole-neutron star progenitor
• The formation of neutron star systems through accretion-induced collapse in white-dwarf binaries
• Effects of winds on the leftover hydrogen in massive stars following Roche lobe overflow
• The Essential Character of the Neutrino Mechanism of Core-Collapse Supernova Explosions
• The presupernova core mass-radius relation of massive stars: understanding its formation and evolution
• Explosion mechanism of core-collapse supernovae: role of the Si/O interface
• Helium Stars: Towards an Understanding of Wolf-Rayet Evolution
• Pre-supernova evolution and final fate of stellar mergers and accretors of binary mass transfer
• Wind mass-loss rates of stripped stars inferred from Cygnus X-1
• A new prescription for the mass-loss rates of WC and WO stars
• Evolution of Wolf-Rayet stars as black hole progenitors
• Helium-Star Mass Loss and its Implications for Black-Hole Formation and Supernova Progenitors
• Bimodal black-hole mass distribution and chirp masses of binary black-hole mergers
• The Limiting Stellar Initial Mass for Black Hole Formation in Close Binary Systems
• It's written in the massive stars: The role of stellar physics in the formation of black holes
• Stripped-envelope stars in different metallicity environments. II. Type I supernovae and compact remnants
• The impact of the new measurement of the ${}^{12}\mathrm{C}{+}^{12}\mathrm{C}$ fusion cross section on the final compactness of the massive stars
• Convective boundary mixing in a post-He core burning massive star model
• Stripped-Envelope Stars in Different Metallicity Environments I. Evolutionary Phases, Classification and Populations
• Formation of millisecond pulsars with long orbital periods by accretion-induced collapse of white-dwarfs
• Explodability criteria for the neutrino-driven supernova mechanism
• Monotonicity of the cores of massive stars
• Thermonuclear and Electron-Capture Supernovae from Stripped-Envelope Stars
• Light Curves of Type IIP Supernovae from Neutrino-driven Explosions of Red Supergiants Obtained by a Semi-analytic Approach
• The Formation of Electron-capture Supernovae: A Review