Evidence for feedback and stellar-dynamically regulated bursty star cluster formation: the case of the Orion Nebula Cluster

Abstract

(abridged) A scenario for the formation of multiple co-eval populations separated in age by about 1 Myr in very young clusters (VYCs, ages less than 10 Myr) and with masses in the range 600-20000 Msun is outlined. It rests upon a converging inflow of molecular gas building up a first population of pre-main sequence stars. The associated just-formed O stars ionise the inflow and suppress star formation in the embedded cluster. However, they typically eject each other out of the embedded cluster within 10^6 yr, that is before the molecular cloud filament can be ionised entirely. The inflow of molecular gas can then resume forming a second population. This sequence of events can be repeated multiply. This model is applied to the Orion Nebula Cluster (ONC), in which three well-separated pre-main sequences in the color-magnitude diagram of the cluster have recently been discovered. The mass-inflow history is constrained using this model and the number of OB stars ejected from each population are estimated for verification using Gaia data. As a consequence of the proposed model, the three runaway O star systems, AE Aur, mu Col and iota Ori, are considered as significant observational evidence for stellar-dynamical ejections of massive stars from the oldest population in the ONC.

13 pages, 4 figures, accepted for publication in A&A. This replacement ensures the arXiv version is identical to the published version

References in corpus (29)

• Binary interaction dominates the evolution of massive stars
• The distance to the Orion Nebula
• Inefficient star formation through turbulence, magnetic fields and feedback
• The Gould's Belt Distances Survey (GOBELINS) II. Distances and structure towards the Orion Molecular Clouds
• A multiphysics and multiscale software environment for modeling astrophysical systems
• Modeling jet and outflow feedback during star cluster formation
• Understanding Spatial and Spectral Morphologies of Ultracompact H II Regions
• Tracing the young massive high-eccentricity binary system Theta 1 Orionis C through periastron passage
• The statistical properties of stars and their dependence on metallicity: the effects of opacity
• The optimally-sampled galaxy-wide stellar initial mass function - Observational tests and the publicly available GalIMF code
• Dependency of dynamical ejections of O stars on the masses of very young star clusters
• A Tale of Three Cities: OmegaCAM discovers multiple sequences in the color-magnitude diagram of the Orion Nebula Cluster
• The formation of NGC 3603 young starburst cluster: "prompt" hierarchical assembly or monolithic starburst?
• The bound fraction of young star clusters
• The three dimensional dynamic structure of the inner Orion Nebula
• A Multi-Color Optical Survey of the Orion Nebula Cluster. Part I: the Catalog
• Core-Halo Age Gradients and Star Formation in the Orion Nebula and NGC~2024 Young Stellar Clusters
• On the initial binary population for star cluster simulations
• Stellar clusterings around "Isolated" Massive YSOs in the LMC
• A perfect starburst cluster made in one go: the NGC 3603 young cluster
• The JCMT Gould Belt Survey: Dense Core Clusters in Orion A
• Captured older stars as the reason for apparently prolonged star formation in young star clusters
• Binary Star Formation and the Outflows from their Discs
• New Evidence for the Dynamical Decay of a Multiple System in the Orion Kleinmann-Low Nebula
• The origin of discrete multiple stellar populations in globular clusters
• The Morphology of M17-UC1 - A Disk Candidate Surrounding a Hypercompact HII Region
• On the Formation of Runaway Stars BN and x in the Orion Nebula Cluster
• A discovery of young stellar objects in older clusters of the Large Magellanic Cloud
• Catch me if you can: is there a runaway-mass black hole in the Orion Nebula Cluster?

Cited by in corpus (42)

• The impact of the metallicity and star formation rate on the time-dependent galaxy-wide stellar initial mass function
• Unifying low and high mass star formation through density amplified hubs of filaments
• 3D mapping of young stars in the solar neighbourhood with Gaia DR2
• Stars with Photometrically Young Gaia Luminosities Around the Solar System (SPYGLASS) I: Mapping Young Stellar Structures and their Star Formation Histories
• The possible role of stellar mergers for the formation of multiple stellar populations in globular clusters
• Runaway and walkaway stars from the ONC with Gaia DR2
• Complete ejection of OB stars from very young star clusters and the formation of multiple populations
• A solution to the proplyd lifetime problem
• When the tale comes true: multiple populations and wide binaries in the Orion Nebula Cluster
• The most massive stars in very young star clusters with a limited mass: Evidence favours significant self-regulation in the star formation processes
• Is stellar multiplicity universal? Tight stellar binaries in the Orion Nebula Cluster
• The Villafranca catalog of Galactic OB groups. II. From Gaia DR2 to EDR3 and ten new systems with O stars
• Do star clusters form in a completely mass-segregated way?
• SIRIUS Project. III. Star-by-star simulations of star cluster formation using a direct N-body integrator with stellar feedback
• Evidence for Radial Expansion at the Core of the Orion Complex with Gaia EDR3
• Hunting for Runaways from the Orion Nebula Cluster
• Is Betelgeuse the Outcome of a Past Merger?
• The impact of primordial binary on the dynamical evolution of intermediate massive star clusters
• Tidal tails of open star clusters as probes to early gas expulsion II: Predictions for Gaia
• External photoevaporation of protoplanetary discs in Cygnus OB2: linking discs to star formation dynamical history
• The impact of massive stars and black holes on the fate of open star clusters and their tidal streams
• SIRIUS project II: a new tree-direct hybrid code for smoothed particle hydrodynamics/N-body simulations of star clusters
• The early evolution of young massive clusters: The kinematic history of NGC6611 / M16
• Low Mass Stars as Tracers of Star and Cluster Formation
• The Lifetimes of Star Clusters Born with a Top-heavy IMF
• Chemical modeling of Orion Nebula Cluster disks: evidence for massive, compact gas disks with ISM-like gas-to-dust ratios
• SIRIUS Project. IV. The formation history of the Orion Nebula Cluster driven by clump mergers
• BiPoS1 -- a computer programme for the dynamical processing of the initial binary star population
• SIRIUS Project. V. Formation of off-center ionized bubbles associated with Orion Nebula Cluster
• The initial mass function of stars and the star-formation rates of galaxies
• Primordial mass segregation of star clusters with primordial binaries
• Ionising Feedback Effects on Star Formation in Globular Clusters with Multiple Stellar Populations
• Bimodal Star Formation in Simulations of Strongly Magnetized Giant Molecular Clouds
• Probing accretion and stellar properties in the Orion Nebula with VLT/X-Shooter
• The kinematics of star clusters undergoing gas expulsion in Newtonian and Milgromian dynamics
• Stirred, not shaken: Star cluster survival in the slingshot scenario
• The 800pc long tidal tails of the Hyades star cluster: Possible discovery of candidate epicyclic overdensities from an open star cluster
• ALMA detections of circumstellar disks in the giant Hii region M17. Probing the intermediate- to high-mass pre-main-sequence population
• Numerical Simulation and Completeness Survey of Bubbles in the Taurus and Perseus Molecular Clouds
• Échelle Spectroscopy of the Chemically Peculiar Star ${\theta }^1$ Ori F
• Rebounding Cores to Build Star Cluster Multiple Populations
• Using a neural network approach and starspots dependent models to predict effective temperatures and ages of young stars