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Title: Formation of globular cluster candidates in merging proto-galaxies at high redshift: a view from the FIRE cosmological simulations

Journal Article · · Monthly Notices of the Royal Astronomical Society
ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4];  [5];  [6]; ORCiD logo [2];  [7]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology; Stanford Univ., CA (United States). Dept. of Physics; California Inst. of Technology (CalTech), Pasadena, CA (United States). TAPIR, Dept. of Astronomy
  2. California Inst. of Technology (CalTech), Pasadena, CA (United States). TAPIR, Dept. of Astronomy
  3. Center for Computational Astrophysics, New York, NY (United States). Flatiron Inst.; Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  4. California Inst. of Technology (CalTech), Pasadena, CA (United States). TAPIR, Dept. of Astronomy; Carnegie Observatories, Pasadena, CA (United States); Univ. of California, Davis, CA (United States). Dept. of Physics
  5. Northwestern Univ., Evanston, IL (United States). Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Dept. of Physics and Astronomy
  6. Univ. of California, San Diego, CA (United States). Center for Astrophysics and Space Sciences, Dept. of Physics
  7. Univ. of Toronto, ON (Canada). Canadian Inst. for Theoretical Astrophysics

Using a state-of-the-art cosmological simulation of merging proto-galaxies at high redshift from the FIRE project, with explicit treatments of star formation and stellar feedback in the interstellar medium, we investigate the formation of star clusters and examine one of the formation hypotheses of present-day metal-poor globular clusters. Here, we find that frequent mergers in high-redshift proto-galaxies could provide a fertile environment to produce long-lasting bound star clusters. The violent merger event disturbs the gravitational potential and pushes a large gas mass of ≳ 105–6 M collectively to high density, at which point it rapidly turns into stars before stellar feedback can stop star formation. The high dynamic range of the reported simulation is critical in realizing such dense star-forming clouds with a small dynamical time-scale, tff ≲ 3 Myr, shorter than most stellar feedback time-scales. Our simulation then allows us to trace how clusters could become virialized and tightly bound to survive for up to ~420 Myr till the end of the simulation. Finally, because the cluster's tightly bound core was formed in one short burst, and the nearby older stars originally grouped with the cluster tend to be preferentially removed, at the end of the simulation the cluster has a small age spread.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF); National Aeronautics and Space Administration (NASA); Alfred P. Sloan Foundation; Gordon and Betty Moore Foundation
Grant/Contract Number:
AC02-76SF00515; PF4-150147; NAS8-03060; AST-1411920; AST-1517491; AST-1412836; 1455342; NNX14AH35G; HSTGO-14734; NNX15AB22G; HST-AR-14293.001-A; HST-GO-14268.022-A; PF5-160136
OSTI ID:
1423127
Journal Information:
Monthly Notices of the Royal Astronomical Society, Vol. 474, Issue 3; ISSN 0035-8711
Publisher:
Royal Astronomical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 67 works
Citation information provided by
Web of Science

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Cited By (66)

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Study of gravitational fields and globular cluster systems of early-type galaxies journal May 2019
The E-MOSAICS project: simulating the formation and co-evolution of galaxies and their star cluster populations journal December 2017
Concurrent formation of supermassive stars and globular clusters: implications for early self-enrichment journal April 2018
Gas clump formation via thermal instability in high-redshift dwarf galaxy mergers journal January 2018
Slow cooling in low-metallicity clouds: an origin of globular cluster bimodality? journal May 2018
The Little Engines That Could? Globular clusters contribute significantly to reionization-era star formation journal June 2018
Formation of globular cluster systems: from dwarf galaxies to giants journal July 2018
Massive star cluster formation under the microscope at z  = 6 journal December 2018
The maximum stellar surface density due to the failure of stellar feedback journal December 2018
Globular clusters in high-redshift dwarf galaxies: a case study from the Local Group journal March 2018
Simulating galaxies in the reionization era with FIRE-2: morphologies and sizes journal March 2018
Formation histories of stars, clusters, and globular clusters in the E-MOSAICS simulations journal May 2019
A systematic analysis of star cluster disruption by tidal shocks – I. Controlled N-body simulations and a new theoretical model journal May 2019
The evolution of the UV luminosity function of globular clusters in the E-MOSAICS simulations journal June 2019
The elephant in the room: the importance of the details of massive star formation in molecular clouds journal July 2019
Radiative properties of the first galaxies: rapid transition between UV and infrared bright phases journal July 2019
A model for the minimum mass of bound stellar clusters and its dependence on the galactic environment journal July 2019
Is there a fundamental upper limit to the mass of a star cluster? journal July 2019
The SLUGGS survey: measuring globular cluster ages using both photometry and spectroscopy journal September 2019
Young star cluster populations in the E-MOSAICS simulations journal October 2019
The E-MOSAICS project: tracing galaxy formation and assembly with the age–metallicity distribution of globular clusters journal April 2019
A MODEST review journal November 2018
Globular Clusters in a Cosmological N -body Simulation journal July 2018
Cold Filamentary Accretion and the Formation of Metal-poor Globular Clusters and Halo Stars journal July 2018
Two Thresholds for Globular Cluster Formation and the Common Occurrence of Massive Clusters in the Early Universe journal December 2018
High-redshift Galaxy Formation with Self-consistently Modeled Stars and Massive Black Holes: Stellar Feedback and Quasar Growth journal December 2019
The Formation of Low-metallicity Globular Clusters in Dwarf Galaxy Mergers journal July 2019
Simulating galaxies in the reionization era with FIRE-2: morphologies and sizes text January 2018
Globular Clusters in a Cosmological N-body Simulation text January 2017
Gas clump formation via thermal instability in high-redshift dwarf galaxy mergers text January 2017
Cold Filamentary Accretion and the Formation of Metal Poor Globular Clusters and Halo Stars text January 2017
The E-MOSAICS Project: simulating the formation and co-evolution of galaxies and their star cluster populations text January 2017
Massive Star cluster formation under the microscope at z=6 text January 2018
Massive star cluster formation and evolution in tidal dwarf galaxies text January 2019
The evolution of the UV luminosity function of globular clusters in the E-MOSAICS simulations text January 2019
The SLUGGS Survey: Measuring globular cluster ages using both photometry and spectroscopy text January 2019
What determines the maximum stellar surface density of galaxies? journal June 2020
Simulating the interstellar medium of galaxies with radiative transfer, non-equilibrium thermochemistry, and dust journal October 2020
STARFORGE: the effects of protostellar outflows on the IMF journal February 2021
Why do black holes trace bulges (& central surface densities), instead of galaxies as a whole? journal November 2021
Effects of initial density profiles on massive star cluster formation in giant molecular clouds journal February 2021
On the nature of variations in the measured star formation efficiency of molecular clouds journal June 2019
Local photoionization feedback effects on galaxies journal September 2019
The lifecycle of molecular clouds in nearby star-forming disc galaxies journal December 2019
Most stars (and planets?) are born in intense radiation fields journal April 2020
The universal acceleration scale from stellar feedback
  • Grudić, Michael Y.; Boylan-Kolchin, Michael; Faucher-Giguère, Claude-André
  • Monthly Notices of the Royal Astronomical Society: Letters, Vol. 496, Issue 1 https://doi.org/10.1093/mnrasl/slaa103
journal June 2020
Globular Cluster Formation and Evolution in the Context of Cosmological Galaxy Assembly: Open Questions text January 2018
Suppression of globular cluster formation in metal-poor gas clouds by Lyman-alpha radiation feedback text January 2018
The effects of metallicity and cooling physics on fragmentation: implications on direct-collapse black hole formation preprint January 2018
The formation and hierarchical assembly of globular cluster populations text January 2018
What drives the evolution of gas kinematics in star-forming galaxies? text January 2018
Clustered Supernovae Drive Powerful Galactic Winds After Super-Bubble Breakout text January 2018
The Elephant in the Room: The Importance of Where and When Massive Stars Form in Molecular Clouds text January 2018
Stochastic modeling of star-formation histories I: the scatter of the star-forming main sequence text January 2019
Disruption of giant molecular clouds and formation of bound star clusters under the influence of momentum stellar feedback text January 2019
Live Fast, Die Young: GMC lifetimes in the FIRE cosmological simulations of Milky Way-mass galaxies text January 2019
On the initial mass-radius relation of stellar clusters text January 2019
Testing Physical Models for Cosmic Ray Transport Coefficients on Galactic Scales: Self-Confinement and Extrinsic Turbulence at GeV Energies text January 2020
The effect of photoionising feedback on the shaping of hierarchically-forming stellar clusters text January 2020
Effects of Different Cosmic Ray Transport Models on Galaxy Formation text January 2020
Stochastic modelling of star-formation histories II: star-formation variability from molecular clouds and gas inflow text January 2020
The mass budget for intermediate-mass black holes in dense star clusters text January 2020
Which feedback mechanisms dominate in the high-pressure environment of the Central Molecular Zone? text January 2020
STARFORGE: Toward a comprehensive numerical model of star cluster formation and feedback text January 2020
Seeds Don't Sink: Even Massive Black Hole "Seeds" Cannot Migrate to Galaxy Centers Efficiently text January 2021

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