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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

Newly formed stars have a profound impact on their environment by depositing energy and momentum into the surrounding gas. However, only a fraction of the stellar feedback is retained in the cloud and observational constraints are needed to…

We describe a new method for simulating ionizing radiation and supernova feedback in the analogues of low-redshift galactic disks. In this method, which we call star-forming molecular cloud (SFMC) particles, we use a ray-tracing technique…

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 present a new framework to incorporate feedback from massive interacting binaries in simulations of star cluster formation. Our new feedback model adds binary stellar evolution to the cluster formation code Torch, and couples it in AMUSE…

We investigate the impact of feedback - from supernovae (SNe), active galactic nuclei (AGN) and a photo-ionizing background at high redshifts - on the neutral atomic hydrogen (HI) mass function, the $b_{\rm J}$ band luminosity function, and…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Han-Seek Kim , C. Power , C. M. Baugh , J. S. B. Wyithe , C. G. Lacey , C. D. P. Lagos , C. S. Frenk

We present the initial results of a study aimed at computing the global effects of the X-ray ionization due to young stars within a molecular cloud that forms stars with a standard IMF at a rate accelerating with time. We model the gas…

Astrophysics · Physics 2007-05-23 Andrea Lorenzani , Francesco Palla

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

Radiative feedback is among the most important consequences of clustered star formation inside molecular clouds. At the onset of star formation, radiation from massive stars heats the surrounding gas, which suppresses the formation of many…

Astrophysics of Galaxies · Physics 2015-06-03 Mikhail Klassen , Ralph E. Pudritz , Thomas Peters

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 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

Massive stars have far-reaching feedback effects that alter the surrounding environment on local, global, and cosmic scales. Spectral analyses of massive stars with adequate stellar-atmosphere models are important to study massive star…

Astrophysics of Galaxies · Physics 2023-02-22 Varsha Ramachandran

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

Using a code that employs a self-consistent method for computing the effects of photo-ionization on circumstellar gas dynamics, we model the formation of wind-driven nebulae around massive stars. We take into account changes in stellar…

Solar and Stellar Astrophysics · Physics 2022-02-22 Vikram V. Dwarkadas

We compare the three-dimensional gas temperature distributions obtained by a dedicated radiative transfer and photoionisation code, MOCASSIN, against those obtained by the recently-developed Smooth Particle Hydrodynamics (SPH) plus…

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

A massive primordial halo near an intensely star-forming galaxy may collapse into a supermassive star (SMS) and leave a massive black hole seed of about $10^5~M_{\odot}$. To investigate the impact of ionizing radiation on the formation of…

Astrophysics of Galaxies · Physics 2017-07-18 Sunmyon Chon , Muhammad A. Latif

We present high resolution simulations on the impact of ionizing radiation of massive O-stars on the surrounding turbulent interstellar medium (ISM). The simulations are performed with the newly developed software iVINE which combines…

Solar and Stellar Astrophysics · Physics 2009-11-13 Matthias Gritschneder , Thorsten Naab , Stefanie Walch , Andreas Burkert , Fabian Heitsch

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

We present a one-dimensional radiation-hydrodynamic model of a spherically symmetric cloud evolving under the influence of the self-gravity and the feedback from a star cluster forming in its centre. On one hand, the model is simple due to…

Forming stars emit a significant amount of radiation into their natal environment. While the importance of radiation feedback from high-mass stars is widely accepted, radiation has generally been ignored in simulations of low-mass star…

Solar and Stellar Astrophysics · Physics 2015-05-20 S. S. R. Offner

We examine various physical processes associated with the formation of globular clusters by using the three-dimensional Smoothed Particle Hydrodynamics (SPH) code. Our code includes radiative cooling of gases, star formation, energy…

Astrophysics · Physics 2009-10-31 Naohito Nakasato , Masao Mori , Ken'ichi Nomoto