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Recent studies show the importance of feedback in the evolution of the star formation rate in the Universe. However, the nature and physics of the feedback are still pressing questions. Radio continuum observations can provide unique…

Astrophysics of Galaxies · Physics 2016-04-20 F. S. Tabatabaei , J. Braine , C. Kramer , E. Schinnerer , J. Beckman , J. Knapen

We present simulations of the formation and evolution of clusters in spiral arms. The simulations follow two different spiral arm regions, and the total gas mass is varied to produce a range of different mass clusters. We find that…

Astrophysics of Galaxies · Physics 2022-09-14 C. L. Dobbs , T. J. R. Bending , A. R. Pettitt , A. S. M. Buckner , M. R. Bate

We study star cluster formation in various environments with different metallicities and column densities by performing a suite of three-dimensional radiation hydrodynamics simulations. We find that the photoionization feedback from massive…

Astrophysics of Galaxies · Physics 2020-08-25 Hajime Fukushima , Hidenobu Yajima , Kazuyuki Sugimura , Takashi Hosokawa , Kazuyuki Omukai , Tomoaki Matsumoto

The stellar initial mass function (IMF) in the early universe is essential to understand the formation of ancient galaxies. To this end, we conduct a series of long-term radiation hydrodynamic simulations following star cluster formation,…

Astrophysics of Galaxies · Physics 2023-12-22 Sunmyon Chon , Takashi Hosokawa , Kazuyuki Omukai , Raffaella Schneider

Protostellar discs may become massive enough to fragment producing secondary low-mass objects: planets, brown dwarfs and low-mass stars. We study the effect of radiative feedback from such newly-formed secondary objects using radiative…

Earth and Planetary Astrophysics · Physics 2016-10-27 Anthony Mercer , Dimitris Stamatellos

We study the effect of stellar feedback (photodissociation/ionization, radiation pressure and winds) on the evolution of a Giant Molecular Cloud (GMC), by means of a 3D radiative transfer, hydro-simulation implementing a complex chemical…

Astrophysics of Galaxies · Physics 2022-07-11 D. Decataldo , A. Lupi , A. Ferrara , A. Pallottini , M. Fumagalli

The implementation of star formation and stellar feedback in cosmological simulations plays a critical role in shaping galaxy properties. In the first paper of the series, we presented a new method to model star formation as a collection of…

Astrophysics of Galaxies · Physics 2018-07-25 Hui Li , Oleg Y. Gnedin , Nickolay Y. Gnedin

Radiative and mechanical feedback of massive stars regulates star formation and galaxy evolution. Positive feedback triggers the creation of new stars by collecting dense shells of gas, while negative feedback disrupts star formation by…

We briefly review the recent numerical works that have been performed to understand the formation of massive stars. After a brief description of the classical works, we review more specifically $i)$ the problem of building stars more…

Astrophysics of Galaxies · Physics 2012-09-11 Patrick Hennebelle , Benoit Commercon

What exactly controls star formation in the Galaxy remains controversial. In particular, the role of feedback and magnetic field are still partially understood. We investigate the role played by supernovae feedback and magnetic field onto…

Astrophysics of Galaxies · Physics 2015-06-19 Patrick Hennebelle , Olivier Iffrig

We study feedback during massive star formation using semi-analytic methods, considering the effects of disk winds, radiation pressure, photoevaporation and stellar winds, while following protostellar evolution in collapsing massive gas…

Solar and Stellar Astrophysics · Physics 2017-01-25 Kei E. I. Tanaka , Jonathan C. Tan , Yichen Zhang

We perform a high resolution zoom-in simulation of star cluster assembly including the merger of two sub-clusters with initial conditions taken from previous large scale giant molecular cloud (GMC) simulations. We couple hydrodynamics to…

Astrophysics of Galaxies · Physics 2025-07-04 Jeremy Karam , Michiko S. Fujii , Alison Sills

We investigate the physical processes which lead to the formation of massive stars. Using a numerical simulation of the formation of a stellar cluster from a turbulent molecular cloud, we evaluate the relevant contributions of fragmentation…

Astrophysics · Physics 2008-11-26 I. A. Bonnell , S. G. Vine , M. R. Bate

Explaining the initial mass function (IMF) of stars is a long-standing problem in astrophysics. The number of complex mechanisms involved in the process of star cluster formation, such as turbulence, magnetic fields and stellar feedback,…

Astrophysics of Galaxies · Physics 2020-08-04 Sajay Sunny Mathew , Christoph Federrath

Star formation is regulated through a variety of feedback processes. In this study, we treat feedback by X-rays and discuss its implications. Our aim is to investigate whether star formation is significantly affected when a star forming…

Astrophysics of Galaxies · Physics 2010-09-03 S. Hocuk , M. Spaans

It is well known that the energy input from massive stars dominates the thermal and mechanical heating of typical regions in the interstellar medium of galaxies. These effects are amplified tremendously in the immediate environment of young…

Astrophysics · Physics 2007-05-23 Jonathan C. Tan , Christopher F. McKee

Massive stars influence the surrounding universe far out of proportion to their numbers through ionizing radiation, supernova explosions, and heavy element production. Their formation requires the collapse of massive interstellar gas clouds…

Astrophysics of Galaxies · Physics 2015-05-19 Ralf S. Klessen , Thomas Peters , Robi Banerjee , Mordecai-Mark Mac Low , Roberto Galvan-Madrid , Eric R. Keto

Feedback to the interstellar medium (ISM) from ionising radiation, stellar winds and supernovae is central to regulating star formation in galaxies. Due to their low mass ($M_{*} < 10^{9}$\,M$_\odot$), dwarf galaxies are particularly…

Astrophysics of Galaxies · Physics 2022-05-17 Michelle L. M. Collins , Justin I. Read

Young massive clusters (YMCs) are dense aggregates of young stars and are often speculated as potential precursors to globular clusters. However, the formation mechanism of massive and compact gas clumps that precede YMCs remains unknown.…

Astrophysics of Galaxies · Physics 2024-06-19 Ryunosuke Maeda , Tsuyoshi Inoue , Kazuyuki Omukai , Yasuo Fukui , Kisetsu Tsuge

Studies of evolved massive stars indicate that they form in a clustered mode. During the earliest evolutionary stages, these regions are embedded within their natal cores. Here, we show high-spatial-resolution interferometric dust continuum…

Astrophysics · Physics 2009-11-10 H. Beuther , P. Schilke