Implications of the metallicity dependence of Wolf-Rayet winds

Abstract

Aims: Recent theoretical predictions for the winds of Wolf-Rayet stars indicate that their mass-loss rates scale with the initial stellar metallicity in the local Universe.We aim to investigate how this predicted dependence affects the models of Wolf-Rayet stars and their progeny in different chemical environments. Methods: We compute models of stellar structure and evolution for Wolf-Rayet stars for different initial metallicities, and investigate how the scaling of the Wolf-Rayet mass-loss rates affects the final masses, the lifetimes of the WN and WC subtypes, and how the ratio of the two populations vary with metallicity. Results: We find significant effects of metallicity dependent mass-loss rates for Wolf-Rayet stars. For models that include the scaling of the mass-loss rate with initial metallicity, all WR stars become neutron stars rather than black holes at twice the solar metallicity; at lower $Z$, black holes have larger masses. We also show that our models that include the mass-loss metallicity scaling closely reproduce the observed decrease of the relative population of WC over WN stars at low metallicities.

arXiv comment8 pages, 9 figures, accepted by Astronomy & Astrophysics

References in corpus (17)

• How Massive Single Stars End their Life
• Mass-loss predictions for O and B stars as a function of metallicity
• Hyper-Accreting Black Holes and Gamma-Ray Bursts
• Stellar evolution with rotation VIII: Models at Z = 10^{-5} and CNO yields for early galactic evolution
• Approximate input physics for stellar modelling
• Stellar evolution with rotation XI: Wolf-Rayet star populations at different metallicities
• Stellar evolution with rotation X: Wolf-Rayet star populations at solar metallicity
• On the metallicity dependence of Wolf-Rayet winds
• The Progenitors of Core-Collapse Supernovae
• Stellar and Wind Properties of LMC WC4 stars - A metallicity dependence for Wolf-Rayet mass-loss rates
• The Progenitor Masses of Wolf-Rayet Stars and Luminous Blue Variables Determined from Cluster Turn-offs. I. Results from 19 OB Associations in the Magellanic Clouds
• Which Massive stars are Gamma-Ray Burst Progenitors?
• Hydrodynamic model atmospheres for WR stars: Self-consistent modeling of a WC star wind
• On the relative frequencies of core-collapse supernovae sub-types: the role of progenitor metallicity
• A Search for Wolf-Rayet Stars in the Small Magellanic Cloud
• A more detailed look at the Opacities for Enriched Carbon and Oxygen Mixtures
• Wolf-Rayets in IC10: Probing the Nearest Starburst

Cited by in corpus (97)

• Physical Properties of Wolf-Rayet Stars
• Pre-Supernova Evolution of Massive Single and Binary Stars
• Mass loss from hot massive stars
• On The Maximum Mass of Stellar Black Holes
• 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
• Type Ib/c supernovae in binary systems I. Evolution and properties of the progenitor stars
• A giant outburst two years before the core-collapse of a massive star
• Grids of stellar models with rotation - III. Models from 0.8 to 120 Msun at a metallicity Z = 0.002
• Spectral synthesis including massive binaries
• Stellar Populations in the Central 0.5 pc of the Galaxy II: The Initial Mass Function
• Runaway stars as progenitors of supernovae and gamma-ray bursts
• Evolution and fate of very massive stars
• The Evolution of Massive Helium Stars Including Mass Loss
• The Type IIb Supernova 2011dh from a Supergiant Progenitor
• The spin of the second-born black hole in coalescing binary black holes
• The evolution of runaway stellar collision products
• The Wolf-Rayet stars in the Large Magellanic Cloud: A comprehensive analysis of the WN class
• Massive stars exploding in a He-rich circumstellar medium. I. Type Ibn (SN 2006jc-like) events
• Production of dust by massive stars at high redshift
• Wind modelling of very massive stars up to 300 solar masses
• Ultraviolet spectra of extreme nearby star-forming regions --- approaching a local reference sample for JWST
• Predictions for mass-loss rates and terminal wind velocities of massive O-type stars
• Luminous Blue Variables and superluminous supernovae from binary mergers
• The Effect of Starburst Metallicity on Bright X-Ray Binary Formation Pathways
• On the nature of massive helium star winds and Wolf-Rayet-type mass loss
• Ultra-luminous X-ray sources and remnants of massive metal-poor stars
• Different to the core: the pre-supernova structures of massive single and binary-stripped stars
• Modelling the binary progenitor of supernova 1993J
• The type IIb SN 2008ax: the nature of the progenitor
• Pre-supernova evolution, compact object masses and explosion properties of stripped binary stars
• A Systematic Survey of the Effects of Wind Mass Loss Algorithms on the Evolution of Single Massive Stars
• Massive stars exploding in a He-rich circumstellar medium III. SN 2006jc: IR echoes from new and old dust in the progenitor CSM
• Towards a better understanding of the evolution of Wolf-Rayet stars and Type Ib/Ic supernova progenitors
• Spatial distribution of Galactic Wolf-Rayet stars and implications for the global population
• SN 2005 gj: Evidence for LBV supernovae progenitors?
• Wolf-Rayet stars in the Small Magellanic Cloud: I. Analysis of the single WN stars
• Constraints on Type Ib/c and GRB Progenitors
• Theory and Diagnostics of Hot Star Mass Loss
• A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary
• Winds from stripped low-mass Helium stars and Wolf-Rayet stars
• Radiative Feedback from high mass X-ray binaries on the formation of the first galaxies and early reionization
• On the role of the WNH phase in the evolution of very massive stars: Enabling the LBV instability with feedback
• Grids of stellar models with rotation IV. Models from 1.7 to 120 Msun at a metallicity Z = 0.0004
• Metallicity-dependent wind parameter predictions for OB stars
• The WR population predicted by massive single star and by massive binary evolution
• Red giant stellar collisions in the Galactic Centre
• Massive star formation in Wolf-Rayet galaxies. III: Analysis of the O and WR populations
• The Wolf-Rayet Content of M33
• A deeper search for the progenitor of the Type Ic Supernova 2002ap
• Very Massive Stars: a metallicity-dependent upper-mass limit, slow winds, and the self-enrichment of Globular Clusters
• Using population synthesis of massive stars to study the interstellar medium near OB associations
• The Peculiar Type Ib Supernova 2006jc: A WCO Wolf-Rayet Star Explosion
• Irradiation models for ULXs and fits to optical data
• New Galactic Wolf-Rayet stars, and candidates. An annex to The VIIth Catalogue of Galactic Wolf-Rayet Stars
• Very massive stars and Nitrogen emitting galaxies
• Helium Stars: Towards an Understanding of Wolf-Rayet Evolution
• Grids of stellar models with rotation VII: Models from 0.8 to 300 M${}_{\odot }$ at super-solar metallicity (Z = 0.020)
• Pair-Instability Supernova Simulations: Progenitor Evolution, Explosion, and Light Curves
• The old environment of the faint calcium-rich supernova SN 2005cz
• Evolution of Wolf-Rayet stars as black hole progenitors
• Hydrogen and helium in the late phase of SNe IIb
• Testing the predicted mass-loss bi-stability jump at radio wavelengths
• The cosmic carbon footprint of massive stars stripped in binary systems
• Stellar dynamics in young clusters: the formation of massive runaways and very massive runaway mergers
• Evolution and CNO yields of Z=10^-5 stars and possible effects on CEMP production
• Low-metallicity massive single stars with rotation. II. Predicting spectra and spectral classes of chemically-homogeneously evolving stars
• Fast-rotating massive Population~III stars as possible sources of extreme N-enrichment in high-redshift galaxies
• A Very Large Telescope imaging and spectroscopic survey of the Wolf-Rayet population in NGC 7793
• On the optical counterpart of NGC300 X-1 and the global Wolf-Rayet content of NGC300
• Constraining GRB progenitor models by probing Wolf-Rayet wind geometries in the Large Magellanic Cloud
• Mass-loss rates of Very Massive Stars
• A transdimensional Bayesian method to infer the star formation history of resolved stellar populations
• Evaluating chemically homogeneous evolution in stellar binaries: Electromagnetic implications -- Ionizing photons, SLSN-I, GRB, Ic-BL
• The Wolf-Rayet population of the nearby barred spiral galaxy NGC 5068 uncovered by VLT and Gemini
• Evidence for early disk-locking among low-mass members of the Orion Nebula Cluster
• Impact of main-sequence mass loss on the appearance, structure and evolution of Wolf-Rayet stars
• Being Careful with the Field Formation Interpretation of GW190412
• Merging binary black holes formed through double-core evolution
• Evolution and Nucleosynthesis of Very Massive Stars
• A Study of Wolf-Rayet stars Formed via Chemically Homogeneous Evolution
• Mass and wind luminosity of young Galactic open clusters in Gaia DR2
• A ULX associated with a cloud collision in M99
• Effects of Winds on the Optical Properties of Type Ib and Ic Supernova Progenitors
• The Maximum Black Hole Mass at Solar Metallicity
• Contribution of young massive star clusters to Galactic diffuse $\gamma$-ray emission
• Can very massive stars avoid Pair-Instability Supernovae?
• Nucleosynthesis from massive stars 50 years after B2FH
• The fate of rotating massive stars across cosmic times
• Blue Supergiant X-ray Binaries in the Nearby Dwarf Galaxy IC 10
• AT2019wxt: An ultra-stripped supernova candidate discovered in electromagnetic follow-up of a gravitational wave trigger
• The First Optical Spectra of Wolf Rayet Stars in M101 Revealed with Gemini/GMOS
• Carbon from massive binary-stripped stars over cosmic time: effect of metallicity
• MARTA: The connection between chemical enrichment, feedback, and dust in a Wolf-Rayet galaxy at z$\sim$2
• Massive stars in the nuclei and arms of spirals
• The detectability of Wolf-Rayet Stars in M33-ike spirals up to 30 Mpc
• Wolf-Rayet Populations at High Metallicity