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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

Magnetic stresses collimate protostellar winds into a common distribution of force with angle. Sweeping into the ambient medium, such winds drive bipolar molecular outflows whose properties are insensitive to the distribution of ambient gas…

Astrophysics · Physics 2007-05-23 Christopher D. Matzner

We examine the effect of momentum-driven OB-star stellar winds on a parameter space of simulated turbulent Giant Molecular Clouds using SPH hydrodynamical simulations. By comparison with identical simulations in which ionizing radiation was…

Astrophysics of Galaxies · Physics 2015-06-17 J. E. Dale , J. Ngoumou , B. Ercolano , I. A. Bonnell

We study the impact of stellar winds and supernovae on the multi-phase interstellar medium using three-dimensional hydrodynamical simulations carried out with FLASH. The selected galactic disc region has a size of (500 pc)$^2$ x $\pm$ 5 kpc…

Astrophysics of Galaxies · Physics 2017-01-25 A. Gatto , S. Walch , T. Naab , P. Girichidis , R. Wünsch , S. C. O. Glover , R. S. Klessen , P. C. Clark , T. Peters , D. Derigs , C. Baczynski , J. Puls

Intermediate and massive stars drive fast and powerful isotropic winds that interact with the winds of nearby stars in star clusters and the surrounding interstellar medium (ISM). Wind-ISM collisions generate astrospheres around these stars…

Astrophysics of Galaxies · Physics 2021-11-08 Monica Gallegos-Garcia , Blakesley Burkhart , Anna Rosen , Jill P. Naiman , Enrico Ramirez-Ruiz

Observations of nearby molecular clouds detect "shells", which are likely caused by winds from young main sequence stars. However, the progenitors of these observed features are not well characterized and the mass-loss rates inferred from…

Astrophysics of Galaxies · Physics 2015-10-07 S. S. R. Offner , H. G. Arce

Stellar winds contain enough energy to easily disrupt the parent cloud surrounding a nascent star cluster, and for this reason have been considered candidates for regulating star formation. However, direct observations suggest most wind…

Astrophysics of Galaxies · Physics 2021-11-24 Lachlan Lancaster , Eve C. Ostriker , Jeong-Gyu Kim , Chang-Goo Kim

Context. Due to the presence of magnetic fields, protostellar jets/outflows are a natural consequence of accretion onto protostars. They are expected to play an important role for star and protoplanetary disk formation. Aims. We aim to…

Solar and Stellar Astrophysics · Physics 2023-12-07 U. Lebreuilly , P. Hennebelle , A. Maury , M. González , A. Traficante , R. Klessen , L. Testi , S. Molinari

We simulate the effects of massive star feedback, via winds and SNe, on inhomogeneous molecular material left over from the formation of a massive stellar cluster. We use 3D hydrodynamic models with a temperature dependent average particle…

Astrophysics of Galaxies · Physics 2012-09-25 Julian Pittard , Hazel Rogers

In this contribution we review our recent numerical work discussing the essential role of the local cluster environment in assembling massive stars. First we show that massive stars are formed from low mass pre-stellar cores and become…

Astrophysics of Galaxies · Physics 2010-08-31 Rowan J Smith , Paul C. Clark , Simon C. O. Glover , Ian A. Bonnell , Ralf S. Klessen

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

The interplay between the ISM and the massive stars formed in clusters and, more generally, in recent events of star formation is reviewed via the global effects each has on the other. The pre-existing environment affects the properties of…

Astrophysics · Physics 2007-05-23 D. Calzetti , C. A. Tremonti , T. M. Heckman , C. Leitherer

Mass and energy injection throughout the lifetime of a star cluster contributes to the gas reservoir available for subsequent episodes of star formation and the feedback energy budget responsible for ejecting material from the cluster. In…

Astrophysics of Galaxies · Physics 2018-07-30 J. P. Naiman , E. Ramirez-Ruiz , D. N. C. Lin

Stellar winds of massive ($\gtrsim9\,\mathrm{M_\odot}$) and very massive ($\gtrsim100\,\mathrm{M_\odot}$) stars may play an important role in the metal-enrichment during the formation of star clusters. With novel high-resolution…

Astrophysics of Galaxies · Physics 2024-04-25 Natalia Lahén , Thorsten Naab , Dorottya Szécsi

Protostellar discs play an important role in star formation, acting as the primary mass reservoir for accretion onto young stars and regulating the extent to which angular momentum and gas is released back into stellar nurseries through the…

Solar and Stellar Astrophysics · Physics 2017-08-09 C. A. Nolan , R. Salmeron , C. Federrath , G. V. Bicknell , R. S. Sutherland

Context: Starbursts, and particularly their high-mass stars, play an essential role in the evolution of galaxies. The winds of massive stars not only significantly influence their surroundings, but the mass loss also profoundly affects the…

Solar and Stellar Astrophysics · Physics 2015-05-28 A. W. A. Pauldrach , D. Vanbeveren , T. L. Hoffmann

The role of different stellar feedback mechanisms in giant molecular clouds is not well understood. This is especially true for regions with many interacting clouds as would be found in a galactic spiral arm. In this paper, building on…

Astrophysics of Galaxies · Physics 2022-01-13 Ahmad A. Ali , Thomas J. R. Bending , Clare L. Dobbs

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…

Stars are born in dense molecular filaments irrespective of their mass. Compression of the ISM by shocks cause filament formation in molecular clouds. Observations show that a massive star cluster formation occurs where the peak of gas…

Astrophysics of Galaxies · Physics 2022-12-07 Daisei Abe , Tsuyoshi Inoue , Rei Enokiya , Yasuo Fukui

We investigate the formation of dense stellar clumps in a suite of high-resolution cosmological zoom-in simulations of a massive, star forming galaxy at $z \sim 2$ under the presence of strong quasar winds. Our simulations include…

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