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Related papers: Observing the onset of outflow collimation in a ma…

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We perform two-dimensional axially symmetric radiation-hydrodynamic simulations to assess the impact of outflows and radiative force feedback from massive protostars by varying when the protostellar outflow starts, the ratio of ejection to…

Solar and Stellar Astrophysics · Physics 2016-11-23 Rolf Kuiper , Neal J. Turner , Harold W. Yorke

We study the evolution of Super Star Cluster (SSC) winds driven by stellar winds and supernova (SN) explosions. Time-dependent rates at which mass and energy are deposited into the cluster volume, as well as the time-dependent chemical…

Astrophysics of Galaxies · Physics 2015-05-28 Richard Wunsch , Sergiy Silich , Jan Palous , Guillermo Tenorio-Tagle , Casiana Munoz-Tunon

Until recently, there have been few studies of the protostellar evolution of intermediate-mass (IM) stars, which may bridge the low- and high-mass regimes. This paper aims to investigate whether the properties of an IM protostar within the…

Astrophysics of Galaxies · Physics 2016-09-01 G. M. Brown , K. G. Johnston , M. G. Hoare , S. L. Lumsden

Galactic winds are a prime suspect for the metal enrichment of the intergalactic medium and may have a strong influence on the chemical evolution of galaxies and the nature of QSO absorption line systems. We use a sample of 1406 galaxy…

Interstellar bubbles around O stars are driven by a combination of the star's wind and ionizing radiation output. The wind contribution is uncertain because the boundary between the wind and interstellar medium is difficult to observe.…

Astrophysics of Galaxies · Physics 2014-12-10 Jonathan Mackey , Vasilii V. Gvaramadze , Shazrene Mohamed , Norbert Langer

The massive star-forming region W75N~(B) is thought to host a cluster of massive protostars (VLA~1, VLA~2, and VLA~3) undergoing different evolutionary stages. In this work, we present radio continuum data with the highest sensitivity and…

Different hydrodynamic regimes for the gaseous outflows generated by multiple supernovae explosions and stellar winds occurring within compact and massive star clusters are discussed. It is shown that there exists the threshold energy that…

Astrophysics · Physics 2009-11-11 S. Silich , G. Tenorio-Tagle , C. Munoz-Tunon , J. Palous

Winds from massive stars have velocities of 1000 km/s or more, and produce hot, high pressure gas when they shock. We develop a theory for the evolution of bubbles driven by the collective winds from star clusters early in their lifetimes,…

Astrophysics of Galaxies · Physics 2021-06-30 Lachlan Lancaster , Eve C. Ostriker , Jeong-Gyu Kim , Chang-Goo Kim

Massive, evolved stars play a crucial role in the metal-enrichment, dust budget, and energetics of the interstellar medium, however, the details of their evolution are uncertain because of their rarity and short lifetimes before exploding…

Solar and Stellar Astrophysics · Physics 2016-02-24 Ryan M. Lau , Matthew J. Hankins , Terry L. Herter , Mark R. Morris , Elisabeth A. C. Mills , Michael E. Ressler

In a companion paper, we develop a theory for the evolution of stellar wind driven bubbles in dense, turbulent clouds. This theory proposes that turbulent mixing at a fractal bubble-shell interface leads to highly efficient cooling, in…

Astrophysics of Galaxies · Physics 2021-06-30 Lachlan Lancaster , Eve C. Ostriker , Jeong-Gyu Kim , Chang-Goo Kim

In this study we present three-dimensional radiative cooling hydrodynamical simulations of galactic winds generated particularly in M82-like starburst galaxies. We have considered intermittent winds induced by SNe explosions within super…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 C. Melioli , E. M. de Gouveia Dal Pino , F. Geraissate

The origin and impact of outflows on proto-planetary disks and planet formation are key open questions. DG Tau B, a Class I protostar with a structured disk and a striking rotating conical CO outflow, recently identified with ALMA as one of…

Solar and Stellar Astrophysics · Physics 2024-08-21 Valentin Delabrosse , Catherine Dougados , Sylvie Cabrit , Benoit Tabone , Lukasz Tychoniec , Tom Ray , Linda Podio , Melissa McClure

The dynamics of the wind-wind collision in massive stellar binaries is investigated using three-dimensional hydrodynamical models which incorporate gravity, the driving of the winds, the orbital motion of the stars, and radiative cooling of…

Solar and Stellar Astrophysics · Physics 2015-05-13 J. M. Pittard

Vertical gas flows, such as winds and meridional circulations, are natural outcomes of protoplanetary disk processes and play a critical role in the earliest stages of planet formation. We analyze vertical gas motions in 14 disks as part of…

The evolution of X-ray emission from young massive star clusters is modeled, taking into account the emission from the stars as well as from the cluster wind. It is shown that the level and character of the soft (0.2-10 keV) X-ray emission…

Astrophysics · Physics 2009-11-11 L. M. Oskinova

Using ultra-violet absorption-lines, we analyze the systematic properties of the warm ionized phase of starburst-driven winds in a sample of 39 low-redshift objects that spans broad ranges in starburst and galaxy properties. Total column…

Astrophysics of Galaxies · Physics 2015-08-26 Timothy M. Heckman , Rachel M. Alexandroff , Sanchayeeta Borthakur , Roderik Overzier , Claus Leitherer

W49N is a mini-starburst in the Milky Way and thus an ideal laboratory for high-mass star formation studies. Due to its large distance (11.1$_{-0.7}^{+0.9}$ kpc), the kinematics inside and between the dense molecular clumps in W49N are far…

Molecular clouds in the interstellar medium suffer gravitational instabilities that lead to the formation of one or multiple stars. A recently formed star inside a cold cloud communicates its gravitational force to the surrounding…

Astrophysics · Physics 2007-05-23 S. Mendoza , J. Canto , A. Raga

Galactic winds are a crucial player in galaxy formation and evolution, but observations of them have proven extraordinarily difficult to interpret, leaving large uncertainties even in basic quantities such as mass outflow rates. Part of…

Astrophysics of Galaxies · Physics 2022-11-30 Yuxuan Yuan , Mark R. Krumholz , Crystal L. Martin

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