The GRIFFIN project -- Formation of star clusters with individual massive stars in a simulated dwarf galaxy starburst

Abstract

We describe a population of young star clusters (SCs) formed in a hydrodynamical simulation of a gas-rich dwarf galaxy merger resolved with individual massive stars at sub-parsec spatial resolution. The simulation is part of the GRIFFIN (Galaxy Realizations Including Feedback From INdividual massive stars) project. The star formation environment during the simulation spans seven orders of magnitude in gas surface density and thermal pressure, and the global star formation rate surface density (${\Sigma }_{\mathrm{SFR}}$) varies by more than three orders of magnitude during the simulation. Young SCs more massive than $M_{\ast ,\mathrm{cl}}\sim 10^{2.5}{M}_{\odot }$ form along a mass function with a power-law index $\alpha \sim -1.7$ ($\alpha \sim -2$ for $M_{\ast ,\mathrm{cl}}\gtrsim 10^3{M}_{\odot }$) at all merger phases, while the normalization and the highest SC masses (up to $\sim 10^6{M}_{\odot }$) correlate with ${\Sigma }_{\mathrm{SFR}}$. The cluster formation efficiency varies from $\Gamma \sim 20\%$ in early merger phases to $\Gamma \sim 80\%$ at the peak of the starburst and is compared to observations and model predictions. The massive SCs ($\gtrsim 10^4{M}_{\odot }$) have sizes and mean surface densities similar to observed young massive SCs. Simulated lower mass clusters appear slightly more concentrated than observed. All SCs form on timescales of a few Myr and lose their gas rapidly resulting in typical stellar age spreads between $\sigma \sim 0.1-2$ Myr ($1\sigma$), consistent with observations. The age spreads increase with cluster mass, with the most massive cluster ($\sim 10^6{M}_{\odot }$) reaching a spread of $5\mathrm{Myr}$ once its hierarchical formation finishes. Our study shows that it is now feasible to investigate the SC population of entire galaxies with novel high-resolution numerical simulations.

21 pages, 10 figures, accepted for publication in ApJ

References in corpus (38)

• UV Star Formation Rates in the Local Universe
• The effect of photo-ionization on the cooling rates of enriched, astrophysical plasmas
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• Probing the role of the galactic environment in the formation of stellar clusters; using M83 as a test bench
• Modelling the supernova-driven ISM in different environments
• A parsec-resolution simulation of the Antennae galaxies: Formation of star clusters during the merger
• Variations in Stellar Clustering with Environment: Dispersed Star Formation and the Origin of Faint Fuzzies
• Star Cluster Demographics. I. A General Framework and Application to the Antennae Galaxies
• Star cluster formation in cosmological simulations. I. Properties of young clusters
• Studying the YMC population of M83: how long clusters remain embedded, their interaction with the ISM and implications for GC formation theories
• High-resolution simulations of galaxy mergers: Resolving globular cluster formation
• The Spitzer Spirals, Bridges, and Tails Interacting Galaxy Survey: Interaction-Induced Star Formation in the Mid-Infrared
• Do O-stars form in isolation?
• The origin of the Milky Way globular clusters
• The SILCC project --- IV. Impact of dissociating and ionising radiation on the interstellar medium and Halpha emission as a tracer of the star formation rate
• ALMA Observations of the Antennae Galaxies: I. A New Window on a Prototypical Merger
• Disruption of giant molecular clouds and formation of bound star clusters under the influence of momentum stellar feedback
• Internal dynamics and membership of the NGC 3603 Young Cluster from microarcsecond astrometry
• The formation of low metallicity globular clusters in dwarf galaxy mergers
• PHAT Stellar Cluster Survey I. Year 1 Catalog and Integrated Photometry
• PHAT Stellar Cluster Survey. II. Andromeda Project Cluster Catalog
• Not all stars form in clusters - measuring the kinematics of OB associations with $Gaia$
• H$\alpha$ Morphologies of Star Clusters: A LEGUS study of HII region evolution timescales and stochasticity in low mass clusters
• The Young Star Cluster population of M51 with LEGUS: I. A comprehensive study of cluster formation and evolution
• Rotation in young massive star clusters
• The origin of globular cluster systems from cosmological simulations
• Constraining Globular Cluster Formation Through Studies of Young Massive Clusters - IV. Testing the Fast Rotating Massive Star Scenario
• A Widespread, Clumpy Starburst in the Isolated Ongoing Dwarf Galaxy Merger dm1647+21
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• The Snapshot Hubble U-Band Cluster Survey (SHUCS) II. Star Cluster Population of NGC 2997
• The Star Cluster System in the Local Group Starburst Galaxy IC 10
• Gas clump formation via thermal instability in high-redshift dwarf galaxy mergers

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