Bimodal regime in young massive clusters leading to subsequent stellar generations
arXiv:1601.03867 · doi:10.1017/S1743921315009023
Abstract
Massive stars in young massive clusters insert tremendous amounts of mass and energy into their surroundings in the form of stellar winds and supernova ejecta. Mutual shock-shock collisions lead to formation of hot gas, filling the volume of the cluster. The pressure of this gas then drives a powerful cluster wind. However, it has been shown that if the cluster is massive and dense enough, it can evolve in the so--called bimodal regime, in which the hot gas inside the cluster becomes thermally unstable and forms dense clumps which are trapped inside the cluster by its gravity. We will review works on the bimodal regime and discuss the implications for the formation of subsequent stellar generations. The mass accumulates inside the cluster and as soon as a high enough column density is reached, the interior of the clumps becomes self-shielded against the ionising radiation of stars and the clumps collapse and form new stars. The second stellar generation will be enriched by products of stellar evolution from the first generation, and will be concentrated near the cluster center.
8 pages, 4 figures, invited talk at IAU Symposium 316 "Formation, evolution, and survival of massive star clusters", C. Charbonnel & A. Nota, eds
References in corpus (13)
- Formation and Dynamical Evolution of Multiple Stellar Generations in Globular Clusters
- The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. I. Overview of the Project and Detection of Multiple Stellar Populations
- Early Disc Accretion as the Origin of Abundance Anomalies in Globular Clusters
- Feedback from Winds and Supernovae in Massive Stellar Clusters. I: Hydrodynamics
- News from the Galactic suburbia: the chemical composition of the remote globular cluster NGC 2419
- Two-Dimensional Hydrodynamic Models of Super Star Clusters with a Positive Star Formation Feedback
- Feedback in the Antennae Galaxies (NGC 4038/9): I. High-Resolution Infrared Spectroscopy of Winds from Super Star Clusters
- On the hydrodynamics of the matter reinserted within superstellar clusters
- On the feedback from super stellar clusters. I. The structure of giant HII regions and HII galaxies
- The pressure confined wind of the massive and compact superstar cluster M82-A1
- Young Stellar Clusters with a Schuster Mass Distribution - I: Stationary Winds
- On the Heating Efficiency Derived from Observations of Young Super Star Clusters in M82
- On the Onset of Secondary Stellar Generations in Giant Star Forming Regions and Massive Star Clusters