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We present a set of 3-dimensional, radiation-magnetohydrodynamic calculations of the gravitational collapse of massive (300 Msun), star-forming molecular cloud cores. We show that the combined effects of magnetic fields and radiative…

Solar and Stellar Astrophysics · Physics 2013-03-18 Andrew T. Myers , Christopher F. McKee , Andrew J. Cunningham , Richard I. Klein , Mark R. Krumholz

Any successful model of galaxy formation needs to explain the low rate of star formation in the small progenitors of today's galaxies. This inefficiency is necessary for reproducing the low stellar-to-virial mass fractions, suggested by…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Daniel Ceverino , Anatoly Klypin , Elizabeth Klimek , Sebastian Trujillo-Gomez , Christopher W. Churchill , Joel Primack , Avishai Dekel

The fragmentation of star-forming interstellar clouds, and the resulting stellar initial mass function (IMF), is strongly affected by the temperature structure of the collapsing gas. Since radiation feedback from embedded stars can modify…

Astrophysics of Galaxies · Physics 2015-05-14 Mark R. Krumholz , Andrew J. Cunningham , Richard I. Klein , Christopher F. McKee

Using 3D radiation-hydrodynamical simulations, we study the effects of ionising radiation on the formation of second-generation (SG) stars in Globular Clusters (GCs) with multiple stellar populations. In particular, we focus on massive…

Astrophysics of Galaxies · Physics 2022-10-25 Asiyeh Yaghoobi , Joakim Rosdahl , Francesco Calura , Pouria Khalaj , Hosein Haghi

We present the fourth in a series of papers detailing our SPH study of the effects of ionizing feedback from O--type stars on turbulent star forming clouds. Here, we study the effects of photoionization on a series of initially partially…

Astrophysics of Galaxies · Physics 2015-06-12 J. E. Dale , B. Ercolano , I. A. Bonnell

We investigate the effects of magnetic fields and radiative protostellar feedback on the star formation process using self-gravitating radiation magnetohydrodynamical calculations. We present results from a series of calculations of the…

Solar and Stellar Astrophysics · Physics 2015-05-13 Daniel J. Price , Matthew R. Bate

Stars do not generally form in isolation. Instead, they form in clusters, and in these clustered environments newborn stars can have profound effects on one another and on their parent gas clouds. Feedback from clustered stars is almost…

We investigate the spatially-resolved star formation relation using a galactic disk formed in a comprehensive high-resolution (3.8 pc) simulation. Our new implementation of stellar feedback includes ionizing radiation as well as supernova…

Astrophysics of Galaxies · Physics 2018-03-12 Ji-hoon Kim , Mark R. Krumholz , John H. Wise , Matthew J. Turk , Nathan J. Goldbaum , Tom Abel

We examine the combined effects of winds and photoionizing radiation from O--type stars on embedded stellar clusters formed in model turbulent molecular clouds covering a range of masses and radii. We find that feedback is able to increase…

Astrophysics of Galaxies · Physics 2015-08-06 J. E. Dale , B. Ercolano , I. A. Bonnell

Forming stars emit a substantial amount of radiation into their natal environment. We use ORION, an adaptive mesh refinement (AMR) three-dimensional gravito-radiation-hydrodynamics code, to simulate low-mass star formation in a turbulent…

Solar and Stellar Astrophysics · Physics 2009-09-28 S. S. R. Offner , R. I. Klein , C. F. McKee , M. R. Krumholz

To understand the impact of radiation feedback during the formation of a globular cluster (GC), we simulate a head-on collision of two turbulent giant molecular clouds (GMCs). A series of idealized radiation-hydrodynamic simulations is…

Astrophysics of Galaxies · Physics 2022-08-24 Daniel Han , Taysun Kimm , Harley Katz , Julien Devriendt , Adrianne Slyz

Star clusters host the massive stars responsible for feedback in star-forming galaxies. Stellar feedback shapes the interstellar medium (ISM), affecting the formation of future star clusters. To self-consistently capture the interplay…

Feedback from photoionisation may dominate on parsec scales in massive star-forming regions. Such feedback may inhibit or enhance the star formation efficiency and sustain or even drive turbulence in the parent molecular cloud.…

Astrophysics of Galaxies · Physics 2015-05-20 Barbara Ercolano , Matthias Gritschneder

We investigate the effect of radiative feedback on the star formation process using radiation hydrodynamical simulations. We repeat the previous hydrodynamical star cluster formation simulations of Bate et al., and Bate & Bonnell, but we…

Astrophysics · Physics 2009-11-13 Matthew R. Bate

We investigate the radiation pressure feedback in the formation of massive stars in 1, 2, and 3D radiation hydrodynamics simulations of the collapse of massive pre-stellar cores. In contrast to previous research, we consider frequency…

Solar and Stellar Astrophysics · Physics 2011-02-18 Rolf Kuiper , Hubert Klahr , Henrik Beuther , Thomas Henning

One model for the origin of typical galactic star clusters such as the Orion Nebula Cluster (ONC) is that they form via the rapid, efficient collapse of a bound gas clump within a larger, gravitationally-unbound giant molecular cloud.…

Astrophysics of Galaxies · Physics 2015-05-27 Mark R. Krumholz , Richard I. Klein , Christopher F. McKee

Star formation from the interstellar medium of galactic disks is a basic process controlling the evolution of galaxies. Understanding the star formation rate in a local patch of a disk with a given gas mass is thus an important challenge…

Astrophysics of Galaxies · Physics 2017-06-14 Michael J. Butler , Jonathan C. Tan , Romain Teyssier , Joakim Rosdahl , Sven Van Loo , Sarah Nickerson

We present the first simulations of the formation and feedback of massive stars which account for radiation forces as well as photoionization feedback (along with protostellar outflows). In two different accretion scenarios modeled, we…

Astrophysics of Galaxies · Physics 2018-08-29 Rolf Kuiper , Takashi Hosokawa

We present a large suite of simulations of the formation of low-mass star clusters. Our simulations include an extensive set of physical processes -- magnetohydrodynamics, radiative transfer, and protostellar outflows -- and span a wide…

Astrophysics of Galaxies · Physics 2018-02-07 Andrew J. Cunningham , Mark R. Krumholz , Christopher F. McKee , Richard I. Klein

Stellar clusters are critical constituents within galaxies: they are the result of highest-density star formation, and through their spatially and temporally correlated feedback they regulate their host galaxy evolution. We present a novel…

Astrophysics of Galaxies · Physics 2024-08-12 Marta Reina-Campos , Oleg Y. Gnedin , Alison Sills , Hui Li