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Globular clusters host complex stellar populations whose chemical signatures suggest early (3 Myr - 1 Gyr) retention and reprocessing of stellar ejecta, yet direct evidence for intracluster gas is lacking. Here we present a unified…

Astrophysics of Galaxies · Physics 2025-11-04 Alexey Bobrick , Melvyn B. Davies , Hagai B. Perets

Stellar winds shape the evolution of stars through the loss of mass. In binary systems, they also shape the stars' evolution by modifying the orbit. In this paper, we use hydrodynamic simulations to study the emergence of nearly-isothermal…

Solar and Stellar Astrophysics · Physics 2020-10-21 Morgan MacLeod , Abraham Loeb

Clumping in hot star winds can significantly affect estimates of mass-loss rates, the inferred evolution of the star and the environmental impact of the wind. A hydrodynamical simulation of a colliding winds binary (CWB) with clumpy winds…

Astrophysics · Physics 2009-11-13 J. M. Pittard

Star clusters are observed to form in a highly compact state and with low star-formation efficiencies, and only 10 per cent of all clusters appear to survive to middle- and old-dynamical age. If the residual gas is expelled on a dynamical…

Astrophysics · Physics 2007-05-23 Pavel Kroupa

We discuss a theoretical model for the early evolution of massive star clusters and confront it with the ALMA, radio and infrared observations of the young stellar cluster highly obscured by the molecular cloud D1 in the nearby dwarf…

Astrophysics of Galaxies · Physics 2020-03-18 Sergiy Silich , Guillermo Tenorio-Tagle , Sergio Martinez-Gonzalez , Jean Turner

Following work by W\"unsch and collaborators, we investigate a self-enrichment scenario for second generation star formation in globular clusters wherein wind material from first generation massive stars rapidly radiatively cools. Radiative…

Astrophysics of Galaxies · Physics 2017-07-07 Cassandra Lochhaas , Todd A. Thompson

Hydrodynamic models for spherically-symmetric winds driven by young stellar clusters with a generalized Schuster stellar density profile are explored. For this we use both semi-analytic models and 1D numerical simulations. We determine the…

Star clusters are observed to form in a highly compact state and with low star-formation efficiencies. If the residual gas is expelled on a dynamical time the clusters disrupt thereby (i) feeding a hot kinematical stellar component into…

Astrophysics · Physics 2007-05-23 Pavel Kroupa

The iron composition of globular clusters (GCs) is homogeneous in all but a few massive clusters, despite the presence of multiple stellar populations. Hence, most if not all the supernovae (SN) ejecta was not used to form stars. Here by…

Astrophysics of Galaxies · Physics 2021-06-30 Santiago Jiménez , Guillermo Tenorio-Tagle , Sergiy Silich

Our three-dimensional hydro-dynamical simulations of starbursts examine the formation of superbubbles over a range of driving luminosities and mass loadings that determine superbubble growth and wind velocity. From this we determine the…

Astrophysics of Galaxies · Physics 2016-08-19 Ryan Tanner , Gerald Cecil , Fabian Heitsch

Here we present a self-consistent stationary solution for spherically symmetric winds driven by massive star clusters under the impact of radiative cooling. We demonstrate that cooling may modify drastically the distribution of temperature…

Astrophysics · Physics 2009-11-10 Sergiy Silich , Guillermo Tenorio-Tagle , Ary Rodriguez-Gonzalez

Stellar winds and supernova (SN) explosions of massive stars ("stellar feedback") create bubbles in the interstellar medium (ISM) and insert newly produced heavy elements and kinetic energy into their surroundings, possibly driving…

Massive protostars attain high luminosities as they are actively accreting and the radiation pressure exerted on the gas in the star's atmosphere may launch isotropic high-velocity winds. These winds will collide with the surrounding gas…

Solar and Stellar Astrophysics · Physics 2023-01-04 Anna L. Rosen

The development and progress of the studies of winds and mass loss from hot stars, from about 1965 up to now, is discussed in a personal historical perspective. The present state of knowledge about stellar winds, based on papers presented…

Astrophysics · Physics 2007-05-23 Henny J. G. L. M. Lamers

We present a model to self-consistently describe the joint evolution of starburst galaxies and the galactic wind resulting from this evolution. We combine the population synthesis code Starburst99 with a semi-analytical model of galactic…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Benoit Côté , Hugo Martel , Laurent Drissen , Carmelle Robert

Core-Collapse supernovae arise from stars greater than 8 $\msun$. These stars lose a considerable amount of mass during their lifetime, which accumulates around the star forming wind-blown bubbles. Upon the death of the star in a…

Astrophysics · Physics 2008-11-26 Vikram V. Dwarkadas

The effects of wind-driven star formation feedback on the spatio-temporal organization of stars and gas in galaxies is studied using two-dimensional intermediate-representational quasi-hydrodynamical simulations. The model retains only a…

Astrophysics · Physics 2009-10-31 David Chappell , John Scalo

Mass loss governs the evolution of massive stars and shapes the stellar surroundings. To quantify the impact of the stellar winds we need to know the exact mass-loss rates; however, empirical constraints on the rates are hampered by limited…

In the present paper we combine an N-body code that simulates the dynamics of young dense stellar systems with a massive star evolution handler that accounts in a realistic way for the effects of stellar wind mass loss. We discuss two…

Astrophysics · Physics 2009-12-04 D. Vanbeveren , H. Belkus , J. Van Bever , N. Mennekens

Star clusters form in dense, hierarchically collapsing gas clouds. Bulk kinetic energy is transformed to turbulence with stars forming from cores fed by filaments. In the most compact regions, stellar feedback is least effective in removing…