The impact of primordial binary on the dynamical evolution of intermediate massive star clusters

Abstract

Observations found that star clusters contain a large fraction of binaries. Tight binaries are an important heating source that influences the long-term dynamical evolution of star clusters. However, due to the limitation of $N$-body tool, previous theoretical modelling for globular clusters (GCs) by using direct $N$-body simulations have not investigated how a large fraction of primordial binaries affect their long-term evolution. In this work, by using the high-performance $N$-body code, PeTar, we carry out star-by-star models for intermediate massive GCs ($N=100000$) with the primordial binary fraction varying from 0 to 1. We find that when a stellar-mass black hole (BH) subsystem exists, the structural evolution of GCs (core and half-mass radii) only depends on the properties of massive primordial binaries, because they affect the number of BH binaries (BBHs), which dominate the binary heating process. Low-mass binaries including double white dwarf binaries (BWDs) have almost no influence on the dynamics. Meanwhile, only gravitational wave (GW) mergers from BBHs are strongly affected by dynamical interactions, while low-mass mergers from BWDs show no difference in the isolated environment (field) and in GCs. Low-mass binaries become important only after most BHs escape and the core collapse of light stars occurs. Our result suggests that for $N$-body modelling of GCs with a black hole subsystem dominating binary heating, it is not necessary to include low-mass binaries. These binaries can be studied separately by using standalone binary stellar evolution codes. This way can significantly reduce the computing cost.

arXiv comment10 pages, 6 figures, submitted to MNRAS

References in corpus (70)

• On the variation of the Initial Mass Function
• GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs
• GWTC-2: Compact Binary Coalescences Observed by LIGO and Virgo During the First Half of the Third Observing Run
• Binary interaction dominates the evolution of massive stars
• Evolution of binary stars and the effect of tides on binary populations
• Comprehensive analytic formulae for stellar evolution as a function of mass and metallicity
• A statistical study of 233 pulsar proper motions
• Stellar Multiplicity
• Mind your Ps and Qs: the Interrelation between Period (P) and Mass-ratio (Q) Distributions of Binary Stars
• Compact Remnant Mass Function: Dependence on the Explosion Mechanism and Metallicity
• Black hole mergers in the universe
• On The Maximum Mass of Stellar Black Holes
• Binary Black Hole Mergers from Globular Clusters: Masses, Merger Rates, and the Impact of Stellar Evolution
• Gravitational waves from scattering of stellar-mass black holes in galactic nuclei
• The ACS Survey of Galactic Globular Clusters. XII. Photometric Binaries along the Main-Sequence
• The Formation of a Bound Star Cluster: From the Orion Nebula Cluster to the Pleiades
• Massive binaries as the source of abundance anomalies in globular clusters
• A comprehensive set of simulations studying the influence of gas expulsion on star cluster evolution
• Gas expulsion and the destruction of massive young clusters
• The Effect of Pair-Instability Mass Loss on Black Hole Mergers
• Inverse Dynamical Population Synthesis and Star Formation
• MOCCA-SURVEY Database I: Coalescing Binary Black Holes Originating From Globular Clusters
• The Dynamical Properties of Stellar Systems in the Galactic Disc
• Merging black holes in young star clusters
• Dynamics of stellar black holes in young star clusters with different metallicities - II. Black hole-black hole binaries
• The DRAGON simulations: globular cluster evolution with a million stars
• Dynamical Formation of the GW150914 Binary Black Hole
• Dynamical evolution of black hole sub-systems in idealised star clusters
• The Evolution of Binary Fractions in Globular Clusters
• Compact Binaries in Star Clusters I - Black Hole Binaries Inside Globular Clusters
• A Multiwavelength Optical Emission Line Survey of Warm Ionized Gas in the Galaxy
• The fraction of binary systems in the core of thirteen low-density Galactic globular clusters
• PeTar: a high-performance N-body code for modeling massive collisional stellar systems
• MOCCA code for star cluster simulations - I. Blue Stragglers, first results
• Implementation and performance of FDPS: A Framework Developing Parallel Particle Simulation Codes
• BSE versus StarTrack: implementations of new wind, remnant-formation, and natal-kick schemes in NBODY7 and their astrophysical consequences
• Black Hole Binaries Dynamically Formed in Globular Clusters
• Compact Binaries Ejected from Globular Clusters as GW Sources
• MOCCA-SURVEY Database I: Eccentric Black Hole Mergers During Binary-Single Interactions In Globular Clusters
• Population synthesis of black hole binary mergers from star clusters
• Star Clusters with Primordial Binaries: I. Dynamical Evolution of Isolated Models
• Million-Body Star Cluster Simulations: Comparisons between Monte Carlo and Direct $N$-body
• Dynamical evolution of stellar-mass black holes in dense stellar clusters: estimate for merger rate of binary black holes originating from globular clusters
• How black holes shape globular clusters: Modeling NGC 3201
• The possible role of stellar mergers for the formation of multiple stellar populations in globular clusters
• Gravitational-Wave Emission from Binary Black Holes Formed in Open Clusters
• Nested shells reveal the rejuvenation of the Orion-Eridanus superbubble
• On the initial binary population for star cluster simulations
• 3D dynamics of the Orion cloud complex -- Discovery of coherent radial gas motions at the 100-pc scale
• A slow-down time-transformed symplectic integrator for solving the few-body problem
• The state of globular clusters at birth II: primordial binaries
• Evidence for feedback and stellar-dynamically regulated bursty star cluster formation: the case of the Orion Nebula Cluster
• Particle-Particle Particle-Tree: A Direct-Tree Hybrid Scheme for Collisional N-Body Simulations
• Complete ejection of OB stars from very young star clusters and the formation of multiple populations
• MOCCA-SURVEY database I. Accreting white dwarf binary systems in globular clusters -- IV. cataclysmic variables -- properties of bright and faint populations
• MOCCA Survey Database I: Dissolution of tidally filling star clusters harbouring BH subsystems
• Is stellar multiplicity universal? Tight stellar binaries in the Orion Nebula Cluster
• Fortran interface layer of the framework for developing particle simulator FDPS
• How fast do young star clusters expel their natal gas?: Estimating the upper limit of the gas expulsion time-scale
• The Detection Rates of Merging Binary Black Holes Originating from Star Clusters and Their Mass Function
• The effect of photoionising feedback on the shaping of hierarchically-forming stellar clusters
• SIRIUS Project. III. Star-by-star simulations of star cluster formation using a direct N-body integrator with stellar feedback
• MOCCA SURVEY Database I: Binary Black Hole Mergers from Globular Clusters with Intermediate Mass Black Holes
• Physical Conditions in Barnard's Loop, Components of the Orion-Eridanus Bubble, and Implications for the WIM Component of the ISM
• Stellar-mass black holes in young massive and open stellar clusters V: comparisons with LIGO-Virgo merger rate densities
• Supernovae in the Orion: the missing link in the star forming history of the region
• Accelerated FDPS --- Algorithms to Use Accelerators with FDPS
• The survival of star clusters with black hole subsystems
• Impact of initial mass functions on the dynamical channel of gravitational wave sources
• A New Hybrid Technique for Modeling Dense Star Clusters

Cited by in corpus (11)

• Asymmetrical tidal tails of open star clusters: stars crossing their cluster's prah challenge Newtonian gravitation
• Gravitational wave of intermediate-mass black holes in Population III star clusters
• Early Evolution and 3D Structure of Embedded Star Clusters
• Merging Hierarchical Triple Black Hole Systems with Intermediate-mass Black Holes in Population III Star Clusters
• Stellar-mass black holes in the Hyades star cluster?
• 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
• Formation and evolution of binary black holes in $N$-body simulations of star clusters with up to two million stars
• On the origin of the split main sequences of the young massive cluster NGC 1856
• The Origin of Young Stellar Populations in NGC 1783: Accretion of External Stars
• Unveiling Bifurcated Blue Straggler Sequences in NGC 2173: Insights from Binary Evolution
• Tidal Synchronization of Binaries in Pleiades