Very Massive Star Models: I. Impact of Rotation and Metallicity and Comparisons with Observations

Abstract

In addition to being spectacular objects, Very Massive Stars (VMS) are suspected to have a tremendous impact on their environment and on the whole cosmic evolution. The nucleosynthesis both during their advanced stages and their final explosion may contribute greatly to the overall enrichment of the Universe. Their resulting supernovae are candidates for the most superluminous events and their extreme conditions also lead to very important radiative and mechanical feedback effects, from local to cosmic scale. We explore the impact of rotation and metallicity on the evolution of very massive stars across cosmic times. With the recent implementation of an equation of state in the GENEC stellar evolution code, appropriate for describing the conditions in the central regions of very massive stars in the advanced phases, we present new results on VMS evolution from Population III to solar metallicity. Low metallicity VMS models are highly sensitive to rotation, while the evolution of higher metallicity models is dominated by mass loss effects. The mass loss affects strongly their surface velocity evolution, breaking quickly at high metallicity while reaching the critical velocity for low metallicity models. The comparison to observed VMS in the LMC shows that the mass loss prescriptions used for these models are compatible with observed mass loss rates. In our framework for modelling rotation, our models of VMS need a high initial velocity to reproduce the observed surface velocities. The surface enrichment of these VMS is difficult to explain with only one initial composition, and could suggest multiple populations in the R136 cluster. At a metallicity typical of R136, only our non- or slowly rotating VMS models may produce Pair Instability supernovae. The most massive black holes that can be formed are less massive than about 60 M${}_{\odot }$.

arXiv comment13 pages, 11 figures

References in corpus (83)

• Mass-loss predictions for O and B stars as a function of metallicity
• Grids of stellar models with rotation - I. Models from 0.8 to 120 Msun at solar metallicity (Z = 0.014)
• The Formation of the First Star in the Universe
• The Formation of the First Stars. I. The Primordial Star Forming Cloud
• Dynamo action by differential rotation in a stably stratified stellar interior
• Fast rotating massive stars and the origin of the abundance patterns in galactic globular clusters
• A New Calculation of the Ionizing Background Spectrum and the Effects of HeII Reionization
• Multiple Stellar Populations in Globular Clusters
• The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 Msun stellar mass limit
• Classical Be Stars: Rapidly Rotating B Stars with Viscous Keplerian Decretion Disks
• One Hundred First Stars : Protostellar Evolution and the Final Masses
• Simulations on a Moving Mesh: The Clustered Formation of Population III Protostars
• Massive binaries as the source of abundance anomalies in globular clusters
• An empirical formula for the mass-loss rates of dust-enshrouded red supergiants and oxygen-rich Asymptotic Giant Branch stars
• The Birth of a Galaxy - III. Propelling reionisation with the faintest galaxies
• Mind the gap: The location of the lower edge of the pair instability supernovae black hole mass gap
• The Formation of Population III Binaries from Cosmological Initial Conditions
• New Measurements of the Ionizing Ultraviolet Background over 2 < z < 5 and Implications for Hydrogen Reionization
• Primordial Star Formation under the Influence of Far Ultraviolet Radiation: 1540 Cosmological Halos and the Stellar Mass Distribution
• An upper limit to the masses of stars
• The Mass Spectrum of the First Stars
• The first stars: formation of binaries and small multiple systems
• Super-Massive Stars as a Source of Abundance Anomalies of Proton-Capture Elements in Globular Clusters
• Gravitational fragmentation in turbulent primordial gas and the initial mass function of Population III stars
• Grids of stellar models with rotation II. WR populations and supernovae/GRB progenitors at Z = 0.014
• Building up the Population III initial mass function from cosmological initial conditions
• Very low metallicity massive star models: Pre-SN evolution and primary nitrogen production
• Evidence for a fundamental stellar upper mass limit from clustered star formation
• Evolution and fate of very massive stars
• Evolution of the Intergalactic Opacity: Implications for the Ionizing Background, Cosmic Star Formation, and Quasar Activity
• Mass loss from late-type WN stars and its Z-dependence: very massive stars approaching the Eddington limit
• Abundance patterns of multiple populations in Globular Clusters: a chemical evolution model based on yields from AGB ejecta
• Evolution towards the critical limit and the origin of Be stars
• Concurrent formation of supermassive stars and globular clusters: implications for early self-enrichment
• Pulsational pair-instability supernovae in very close binaries
• The Pair-Instability Mass Gap for Black Holes
• Stellar envelope inflation near the Eddington limit. Implications for the radii of Wolf-Rayet stars and luminous blue variables
• The impact of the metallicity and star formation rate on the time-dependent galaxy-wide stellar initial mass function
• Constraining the Statistics of Population III Binaries
• Massive main sequence stars evolving at the Eddington limit
• On the nature of massive helium star winds and Wolf-Rayet-type mass loss
• Formation of GW190521 from stellar evolution: the impact of the hydrogen-rich envelope, dredge-up and ${}^{12}$C($\alpha$, $\gamma$)${}^{16}$O rate on the pair-instability black hole mass gap
• The evolution of massive stars and their spectra I. A non-rotating 60 Msun star from the zero-age main sequence to the pre-supernova stage
• The VLT-FLAMES Tarantula Survey XVII. Physical and wind properties of massive stars at the top of the main sequence
• Statistical Confirmation of a Stellar Upper Mass Limit
• POSYDON: A General-Purpose Population Synthesis Code with Detailed Binary-Evolution Simulations
• The IACOB project: III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars
• Stellar evolution with rotation and magnetic fields II: General equations for the transport by Tayler--Spruit dynamo
• Theory and Diagnostics of Hot Star Mass Loss
• The R136 star cluster dissected with Hubble Space Telescope/STIS. II. Physical properties of the most massive stars in R136
• Core-halo Structure of Chemically Homogeneous Massive Star and Bending of Zero-Age Main-Sequence
• The VLT-FLAMES Tarantula Survey. XXIX. Massive star formation in the local 30 Doradus starburst
• Mass and angular momentum loss via decretion disks
• Grids of stellar models with rotation IV. Models from 1.7 to 120 Msun at a metallicity Z = 0.0004
• The impact of stellar rotation on the black hole mass-gap from pair-instability supernovae
• The VLT-FLAMES Tarantula Survey XXIV. Stellar properties of the O-type giants and supergiants in 30 Doradus
• Formation sites of Population III star formation: The effects of different levels of rotation and turbulence on the fragmentation behavior of primordial gas
• The VLT-FLAMES Tarantula Survey XIX. B-type Supergiants - Atmospheric parameters and nitrogen abundances to investigate the role of binarity and the width of the main sequence
• A Tale of Three Cities: OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster
• An ionizing UV background dominated by massive stars
• Grids of stellar models with rotation VI: Models from 0.8 to 120 $M_{\odot }$ at a metallicity Z = 0.006
• Very Massive Stars: a metallicity-dependent upper-mass limit, slow winds, and the self-enrichment of Globular Clusters
• Convective core entrainment in 1D main sequence stellar models
• Evolved Massive Stars at Low-metallicity V. Mass-Loss Rate of Red Supergiant Stars in the Small Magellanic Cloud
• The VLT-FLAMES Tarantula Survey XXVI: Properties of the O-dwarf population in 30 Doradus
• The puzzle of the CNO abundances of α Cygni variables resolved by the Ledoux criterion?
• The VLT-FLAMES Tarantula Survey. XIII: On the nature of O Vz stars in 30 Doradus
• Effects of rotation on the evolution and asteroseismic properties of red giants
• Grids of stellar models with rotation VII: Models from 0.8 to 300 M${}_{\odot }$ at super-solar metallicity (Z = 0.020)
• Very Massive Stars and Pair-Instability Supernovae: Mass-loss Framework for low Metallicity
• Convective core sizes in rotating massive stars: I. Constraints from solar metallicity OB field stars
• The Time-Averaged Mass-Loss Rates of Red Supergiants As Revealed by their Luminosity Functions in M31 and M33
• Numerical experiments to help understand cause and effect in massive star evolution
• The effect of intermediate mass close binaries on the chemical evolution of Globular Clusters
• Ionizing photon production of Population III stars: effects of rotation, convection, and initial mass function
• Aluminium-26 from massive binary stars III. Binary stars up to core-collapse and their impact on the early Solar System
• Long-duration Gamma-ray Burst Progenitors and Magnetar Formation
• Supergiants and their shells in young globular clusters
• Evolution of rotating massive stars with new hydrodynamic wind models
• Very massive star winds as sources of the short-lived radioactive isotope ${}^{26}$Al
• Simulations of the progenitors of black hole-neutron star gravitational wave sources
• Infrared excess around nearby RGB stars and Reimers law
• Evolution of eccentric high-mass X-ray binaries. The case of GX 301-2

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• Rapid formation of a very massive star >50000 $M_{\odot }$ and subsequently an IMBH from runaway collisions. Direct N-body and Monte Carlo simulations of dense star clusters
• A Study of Primordial Very Massive Star Evolution. II. Stellar Rotation and Gamma-Ray Burst Progenitors
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• Hydrodynamics and Nucleosynthesis of Jet-Driven Supernovae II: Comparisons with Abundances of Extremely Metal-Poor Galaxies and Constraints on Supernova Progenitors
• The fate of rotating massive stars across cosmic times
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• Enhanced Mass Loss of Very Massive Stars: Impact on the Evolution, Binary Processes, and Remnant Mass Spectrum
• Evolutionary models for the Very Massive Stars in the R136 cluster of 30 Doradus in the Large Magellanic Cloud
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• Ultraviolet photon production rates of the first stars: Impact on the He II $\lambda$ 1640 Å emission line from primordial star clusters and the 21-cm signal from cosmic dawn
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