Molecular gas properties in young stellar clusters with a suppressed star cluster wind

Abstract

In compact and dense star-forming clouds a global star cluster wind could be suppressed. In this case the stellar feedback is unable to expel the leftover gas from the cluster. Young massive stars remain embedded into a dense residual gas and stir it moving in the gravitational well of the system. Here we present a self-consistent model for the molecular gas distribution in such young, enshrouded stellar clusters. It is assumed that the cloud collapse terminates and the star formation ceases when a balance between the turbulent pressure and gravity and between the turbulent energy dissipation and regeneration rates is established. These conditions result in an equation that determines the residual gas density distribution that, in turn, allows one to determine the other characteristics of the leftover gas and the star formation efficiency. It is shown that model predictions are in good agreement with several observationally determined properties of cloud D1 in nearby dwarf spheroidal galaxy NGC 5253 and its embedded cluster.

arXiv comment12 pages, 3 figures, accepted for publication in the ApJ Letters

References in corpus (56)

• Theory of Star Formation
• Control of star formation by supersonic turbulence
• Young massive star clusters
• Interstellar Turbulence I: Observations and Processes
• A General Theory of Turbulence-Regulated Star Formation, From Spirals to ULIRGs
• Dissipation in Compressible MHD Turbulence
• The Energy Dissipation Rate of Supersonic, Magnetohydrodynamic Turbulence in Molecular Clouds
• The physics of galactic winds driven by active galactic nuclei
• The Disruption of Giant Molecular Clouds by Radiation Pressure and the Efficiency of Star Formation in Galaxies
• The Star Formation Rate of Supersonic MHD Turbulence
• Diagnostics of irradiated gas in galaxy nuclei. I: A Far-ultraviolet and X-ray dominated region code
• A comprehensive set of simulations studying the influence of gas expulsion on star cluster evolution
• On the Role of Massive Stars in the Support and Destruction of Giant Molecular Clouds
• Surface Brightness Profiles and Structural Parameters for 53 Rich Stellar Clusters in the Large Magellanic Cloud
• The Herschel Dwarf Galaxy Survey: I. Properties of the low-metallicity ISM from PACS spectroscopy
• Inverse dynamical population synthesis: Constraining the initial conditions of young stellar clusters by studying their binary populations
• The Global Evolution of Giant Molecular Clouds. I: Model Formulation and Quasi-Equilibrium Behavior
• A cosmic-ray dominated ISM in Ultra Luminous Infrared Galaxies: new initial conditions for star formation
• Heating and Ionization of X-Winds
• The Spitzer Space Telescope Survey of the Orion A and B Molecular Clouds II: the Spatial Distribution and Demographics of Dusty Young Stellar Objects
• The thermal state of molecular clouds in the Galactic Center: evidence for non-photon-driven heating
• Turbulent Driving Scales in Molecular Clouds
• Supersonic Turbulence and the Fragmentation of a Cold Medium
• The influence of residual gas expulsion on the evolution of the Galactic globular cluster system and the origin of the Population II halo
• Molecule survival in magnetized protostellar disk winds. I. Chemical model and first results
• The relative impact of photoionizing radiation and stellar winds on different environments
• Hydrodynamics of Cometary Compact HII Regions
• Numerical Simulations of Turbulent Molecular Clouds Regulated by Reprocessed Radiation Feedback from Nascent Super Star Clusters
• Turbulence driven by outflow-blown cavities in the molecular cloud of NGC 1333
• Highly efficient star formation in NGC 5253 possibly from stream-fed accretion
• Star Formation in Space and Time: The Orion Nebula Cluster
• Warm H2 in the Galactic center region
• The Temperature of Interstellar Clouds from Turbulent Heating
• Praesepe (NGC 2632) and its tidal tails
• The Very Massive Star Content of the Nuclear Star Clusters in NGC 5253
• Wind bubbles within H II regions around slowly moving stars
• Vortices in the wakes of AGB stars
• ALMA Detects CO(3-2) within a Super Star Cluster in NGC5253
• Gas expulsion vs gas retention: what process dominates in young massive clusters?
• A Case Study of Low-Mass Star Formation
• Thermal emission from bow shocks I: 2D Hydrodynamic Models of the Bubble Nebula
• Photoionized mixing layer models of the diffuse ionized gas
• X-ray Sources and Star Formation Activity in the Sgr B2 Cloud Observed with Chandra
• Gas expulsion vs gas retention in young stellar clusters II: effects of cooling and mass segregation
• Non-Equilibrium Chemistry and Destruction of CO by X-ray Flares
• Dynamics of H II regions around exiled O stars
• Bow shocks, bow waves, and dust waves. I. Strong coupling limit
• X-ray properties of early-type stars in the Tarantula Nebula from T-ReX
• Hard X-rays from Ultra-Compact HII Regions in W49A
• Constraints on Stirring and Dissipation of MHD Turbulence in Molecular Clouds
• The giants that were born swiftly -- Implications of the top-heavy stellar initial mass function on the birth conditions of globular clusters
• ALMA CO(3-2) Observations of Star-Forming Filaments in a Gas-Poor Dwarf Spheroidal Galaxy
• On the early evolution of massive star clusters: the case of cloud D1 and its embedded cluster in NGC 5253
• SNe and their impact during the early evolution of Type I Globular Clusters
• A ram-pressure threshold for star formation
• Structural analysis of disk super star clusters of M82: size and profile shape at intermediate ages

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