A synthetic population of Wolf-Rayet stars in the LMC based on detailed single and binary star evolution models

Abstract

Without doubt, mass transfer in close binary systems contributes to the populations of Wolf-Rayet (WR) stars in the Milky Way and the Magellanic Clouds. However, the binary formation channel is so far not well explored. We want to remedy this by exploring large grids of detailed binary and single star evolution models computed with the publicly available MESA code, for a metallicity appropriate for the Large Magellanic Cloud (LMC). The binary models are calculated through Roche-lobe overflow and mass transfer, until the initially more massive star exhausts helium in its core. We distinguish models of WR and helium stars based on the estimated stellar wind optical depth. We use these models to build a synthetic WR population, assuming constant star formation. Our models can reproduce the WR population of the LMC to significant detail, including the number and luminosity functions of the main WR subtypes. We find that for binary fractions of 100% (50%), all LMC WR stars below $10^6{L}_{\odot }$ ($10^{5.7}{L}_{\odot }$) are stripped binary mass donors. We also identify several insightful mismatches. With a single star fraction of 50\%, our models produce too many yellow supergiants, calling either for a larger initial binary fraction, or for enhanced mass-loss near the Humphreys-Davidson limit. Our models predict more long-period WR binaries than observed, arguably due to an observational bias towards short periods. Our models also underpredict the shortest-period WR binaries, which may have implications for understanding the progenitors of double black hole mergers. The fraction of binary produced WR stars may be larger than often assumed, and outline the risk to mis-calibrate stellar physics when only single star models are used to reproduce the observed WR stars.

arXiv comment15 pages + 13 pages appendix, 14 figures, 2 tables

References in corpus (103)

• The chemical composition of the Sun
• 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
• MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
• X-ray Properties of Black-Hole Binaries
• 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
• Comprehensive analytic formulae for stellar evolution as a function of mass and metallicity
• 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)
• Mind your Ps and Qs: the Interrelation between Period (P) and Mass-ratio (Q) Distributions of Binary Stars
• Common Envelope Evolution: Where we stand and how we can move forward
• Presupernova Evolution of Rotating Massive Stars I: Numerical Method and Evolution of the Internal Stellar Structure
• Dynamo action by differential rotation in a stably stratified stellar interior
• Physical Properties of Wolf-Rayet Stars
• Pre-Supernova Evolution of Massive Single and Binary Stars
• Binary Population and Spectral Synthesis Version 2.1: construction, observational verification and new results
• The Progenitor Stars of Gamma-Ray Bursts
• Rotating Massive Main-Sequence Stars I: Grids of Evolutionary Models and Isochrones
• A new route towards merging massive black holes
• Southern Massive Stars at High Angular Resolution: Observational Campaign and Companion Detection
• Evolution of rapidly rotating metal-poor massive stars towards gamma-ray bursts
• Presupernova evolution and explosive nucleosynthesis of rotating massive stars in the metallicity range -3 <=[Fe/H]<= 0
• The rotation rates of massive stars: the role of binary interaction through tides, mass transfer and mergers
• The VLT-FLAMES Tarantula Survey VIII. Multiplicity properties of the O-type star population
• Stellar evolution with rotation XI: Wolf-Rayet star populations at different metallicities
• The effect of massive binaries on stellar populations and supernova progenitors
• Single star progenitors of long gamma-ray bursts I: Model grids and redshift dependent GRB rate
• Stellar evolution with rotation X: Wolf-Rayet star populations at solar metallicity
• The Star Formation History of the Large Magellanic Cloud
• Super Luminous Ic Supernovae: catching a magnetar by the tail
• On the role of continuum-driven eruptions in the evolution of very massive stars and Population III stars
• The chemically homogeneous evolutionary channel for binary black hole mergers: rates and properties of gravitational-wave events detectable by advanced LIGO
• Grids of stellar models with rotation - III. Models from 0.8 to 120 Msun at a metallicity Z = 0.002
• The empirical metallicity dependence of the mass-loss rate of O- and early B-type stars
• Grids of stellar models with rotation II. WR populations and supernovae/GRB progenitors at Z = 0.014
• Rotational mixing in massive binaries: detached short-period systems
• The VLT-FLAMES survey of massive stars: constraints on stellar evolution from the chemical compositions of rapidly rotating Galactic and Magellanic Cloud B-type stars
• Galaxies with Wolf-Rayet signatures in the low-redshift Universe - A survey using the Sloan Digital Sky Survey
• The mass-loss rates of red supergiants and the de Jager prescription
• The VLT-FLAMES survey of massive stars: rotation and nitrogen enrichment as the key to understanding massive star evolution
• Core-collapse explosions of Wolf-Rayet stars and the connection to type IIb/Ib/Ic supernovae
• The VLT-FLAMES survey of massive stars: Evolution of surface N abundances and effective temperature scales in the Galaxy and Magellanic Clouds
• The Galactic WC stars: Stellar parameters from spectral analyses indicate a new evolutionary sequence
• The VLT-FLAMES survey of massive stars: Surface chemical compositions of B-type stars in the Magellanic Clouds
• Forming short-period Wolf-Rayet X-ray binaries and double black holes through stable mass transfer
• The Wolf-Rayet stars in the Large Magellanic Cloud: A comprehensive analysis of the WN class
• Spectral models for binary products: Unifying Subdwarfs and Wolf-Rayet stars as a sequence of stripped-envelope stars
• Stellar and Wind Properties of LMC WC4 stars - A metallicity dependence for Wolf-Rayet mass-loss rates
• Stellar envelope inflation near the Eddington limit. Implications for the radii of Wolf-Rayet stars and luminous blue variables
• The evolution of rotating very massive stars with LMC composition
• Massive main sequence stars evolving at the Eddington limit
• Luminous Blue Variables and superluminous supernovae from binary mergers
• On the nature of massive helium star winds and Wolf-Rayet-type mass loss
• Natal Kicks of Stellar-Mass Black Holes by Asymmetric Mass Ejection in Fallback Supernovae
• The VLT-FLAMES Tarantula Survey XVII. Physical and wind properties of massive stars at the top of the main sequence
• Common envelope ejection in massive binary stars - Implications for the progenitors of GW150914 and GW151226
• Constraining mixing in massive stars in the Small Magellanic Cloud
• The Galactic WC and WO stars: The impact of revised distances from Gaia DR2 and their role as massive black hole progenitors
• Towards a better understanding of the evolution of Wolf-Rayet stars and Type Ib/Ic supernova progenitors
• The Galactic WN stars revisited. Impact of Gaia distances on fundamental stellar parameters
• Black hole formation and fallback during the supernova explosion of a $40{\mathrm{M}}_{\odot }$ star
• The luminosities of cool supergiants in the Magellanic Clouds, and the Humphreys-Davidson limit revisited
• Evolution of Mass Functions of Coeval Stars through Wind Mass Loss and Binary Interactions
• A Spectroscopic Survey of WNL Stars in the LMC: General Properties and Binary Status
• Why binary interaction does not necessarily dominate the formation of Wolf-Rayet stars at low metallicity
• Properties of OB star-black hole systems derived from detailed binary evolution models
• Winds from stripped low-mass Helium stars and Wolf-Rayet stars
• Related progenitor models for long-duration gamma ray bursts and Type Ic superluminous supernovae
• Progenitors of supernova Ibc: a single Wolf-Rayet star as the possible progenitor of the SN Ib iPTF13bvn
• The VLT-FLAMES Tarantula Survey XXIV. Stellar properties of the O-type giants and supergiants in 30 Doradus
• Detailed models of interacting short-period massive binary stars
• Spectroscopic and physical parameters of Galactic O-type stars. III. Mass discrepancy and rotational mixing
• Radiatively-Driven Outflows and Avoidance of Common-Envelope Evolution in Close Binaries
• Metallicity of stars formed throughout the cosmic history based on the observational properties of star forming galaxies
• The Evolutionary Status of SS433
• Effects of close binary evolution on the main-sequence morphology of young star clusters
• A Modern Search for Wolf-Rayet Stars in the Magellanic Clouds. IV. A Final Census
• Massive stars on the verge of exploding: the properties of oxygen sequence Wolf-Rayet stars
• Partial-envelope stripping and nuclear-timescale mass transfer from evolved supergiants at low metallicity
• Supernovae Ib and Ic from the explosion of helium stars
• Grids of stellar models with rotation VI: Models from 0.8 to 120 $M_{\odot }$ at a metallicity Z = 0.006
• Stellar population of the superbubble N206 in the LMC II. Parameters of the OB and WR stars, and the total massive star feedback
• A CNO Dichotomy among O2 Giant Spectra in the Magellanic Clouds
• Analytic, dust-independent mass-loss rates for red supergiant winds initiated by turbulent pressure
• The VLT-FLAMES Tarantula Survey XXVI: Properties of the O-dwarf population in 30 Doradus
• The VLT-FLAMES Tarantula Survey XXV. Surface nitrogen abundances of O-type giants and supergiants
• The HD5980 multiple system: Masses and evolutionary status
• Wolf-Rayet stars in the Small Magellanic Cloud as testbed for massive star evolution
• Pre-collapse Properties of Superluminous Supernovae and Long Gamma-Ray Burst Progenitor Models
• Wind-envelope interaction as the origin of the slow cyclic brightness variations of luminous blue variables
• On the optically-thick winds of Wolf-Rayet stars
• The excess of cool supergiants from contemporary stellar evolution models defies the metallicity-independent Humphreys-Davidson limit
• A spectroscopic multiplicity survey of Galactic Wolf-Rayet stars. I. The northern WC sequence
• On the Iron content of NGC 1978 in the LMC: a metal rich, chemically homogeneous cluster
• WO-Type Wolf-Rayet Stars: the Last Hurrah of Massive Star Evolution
• Stripped-Envelope Stars in Different Metallicity Environments I. Evolutionary Phases, Classification and Populations
• How common is LBV S Dor variability at low metallicity?
• Internal circulation in tidally locked massive binary stars -- Consequences for double black hole formation
• Hydrodynamic Winds From Twin-Star Binaries
• BAT99-9 -- a WC4 Wolf-Rayet star with nitrogen emission: Evidence for binary evolution?

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• Investigating 39 Galactic Wolf-Rayet stars with VLTI/GRAVITY: Uncovering A Long Period Binary Desert
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• Populations of evolved massive binary stars in the Small Magellanic Cloud II: Predictions from rapid binary evolution
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• Modeling contact binaries, III. Properties of a population of close, massive binaries
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• Analytic approximations for massive close post-mass transfer binary systems
• Surface chemical composition of single WNh stars
• A comprehensive grid of massive binary evolution models for the Galaxy - Surface properties of post-mass transfer stars
• A possible formation scenario of the Gaia ID 3425577610762832384: inner binary merger inside a triple common envelope
• The drastic impact of Eddington-limit induced mass ejections on massive star populations
• The demographics of core-collapse supernovae. The role of binary evolution and CSM interaction
• Impact of accretion-induced chemically homogeneous evolution on stellar and compact binary populations
• A constant upper luminosity limit of cool supergiant stars down to the extremely low metallicity of I Zw 18
• Evolutionary models for the Very Massive Stars in the R136 cluster of 30 Doradus in the Large Magellanic Cloud
• Explanations for the two-component spectral energy distributions of gravitationally lensed stars at high redshifts
• Kinematics of Wolf-Rayet Stars in the LMC: Clues to Subtype Origins