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We present a detailed study of star formation occurring in bound star--forming clouds under the influence of internal ionizing feedback from massive stars across a spectrum of cloud properties. We infer which objects are triggered by…

Astrophysics of Galaxies · Physics 2015-06-11 J. E. Dale , B. Ercolano , I. A. Bonnell

We introduce a new self-consistent model of galaxy evolution and reionization, ASTRAEUS (semi-numerical rAdiative tranSfer coupling of galaxy formaTion and Reionization in N-body dArk mattEr simUlationS), which couples a state-of-the-art…

Astrophysics of Galaxies · Physics 2021-03-17 Anne Hutter , Pratika Dayal , Gustavo Yepes , Stefan Gottlöber , Laurent Legrand , Graziano Ucci

We examine the effect of mass and force resolution on a specific star formation (SF) recipe using a set of N-body/Smooth Particle Hydrodynamic simulations of isolated galaxies. Our simulations span halo masses from 10^9 to 10^13 solar…

Instrumentation and Methods for Astrophysics · Physics 2015-05-18 Charlotte Christensen , Thomas Quinn , Gregory Stinson , Jillian Bellovary , James Wadsley

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

Tracing the cosmic path of galaxies requires an understanding of their chemical enrichment and merging histories. One of the most important constraints is the internal structure of galaxies, notably the internal distribution of elements…

Astrophysics of Galaxies · Physics 2025-10-14 Dyna Ibrahim , Chiaki Kobayashi

We discuss the importance of feedback via photoionization and Compton heating on the co-evolution of massive black holes (MBHs) at the center of spheroidal galaxies and their stellar and gaseous components. We first assess the energetics of…

Astrophysics · Physics 2009-11-10 S. Yu. Sazonov , J. P. Ostriker , L. Ciotti , R. A. Sunyaev

Radiation, winds and jets from the active nucleus of a massive galaxy can interact with its interstellar medium leading to ejection or heating of the gas. This can terminate star formation in the galaxy and stifle accretion onto the black…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 A. C. Fabian

Observations of galaxy luminosity function at high redshifts typically focus on fields of view of limited sizes preferentially containing bright sources. These regions possibly are overdense and hence biased with respect to the globally…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Girish Kulkarni , T. Roy Choudhury

Stellar feedback -- stars regulating further star formation through the injection of energy and momentum into the interstellar medium -- operates through a complex set of processes that originate in star clusters but shape entire galaxies.…

We present a systematic study of stellar feedback processes in simulations of disk galaxy formation. Using a dark matter halo with properties similar to the ones for the Milky Way's stellar halo, we perform a comparison of different methods…

Cosmology and Nongalactic Astrophysics · Physics 2009-09-24 Franziska Piontek , Matthias Steinmetz

The spatial decorrelation of dense molecular gas and young stars observed on $\lesssim 1$ kiloparsec scales in nearby galaxies indicates rapid dispersal of star-forming regions by stellar feedback. We explore the sensitivity of this…

Astrophysics of Galaxies · Physics 2021-09-15 Vadim A. Semenov , Andrey V. Kravtsov , Nickolay Y. Gnedin

We present first results from three-dimensional hydrodynamic simulations of the high redshift formation of dwarf galaxies. The simulations use an Eulerian adaptive mesh refinement technique to follow the non-equilibrium chemistry of…

Astrophysics · Physics 2009-11-07 Konstantinos Tassis , Tom Abel , Greg L. Bryan , Michael L. Norman

Supernova (SN) feedback is one of the key processes shaping the interstellar medium (ISM) of galaxies. SNe contribute to (and in some cases may dominate) driving turbulence in the ISM and accelerating galactic winds. Modern cosmological…

Astrophysics of Galaxies · Physics 2016-01-11 Davide Martizzi , Claude-Andre Faucher-Giguere , Eliot Quataert

Mass-loss and radiation feedback from evolving massive stars produce galactic-scale superwinds, sometimes surrounded by pressure-driven bubbles. Using the time-dependent stellar population typically seen in star-forming regions, we conduct…

Astrophysics of Galaxies · Physics 2024-06-27 A. Danehkar , M. S. Oey , W. J. Gray

We consider the effects of different star formation criteria on galactic scales, in high-resolution simulations with explicitly resolved GMCs and stellar feedback. We compare: (1) a self-gravity criterion (based on the local virial…

Cosmology and Nongalactic Astrophysics · Physics 2013-07-02 Philip F. Hopkins , Desika Narayanan , Norman Murray

We present a study of the impact of photoionization feedback from young massive stars on the turbulent statistics of star-forming molecular clouds. This feedback is expected to alter the density structure of molecular clouds and affect…

Astrophysics of Galaxies · Physics 2020-11-09 Nina S. Sartorio , Bert Vandenbroucke , Diego Falceta-Goncalves , Kenneth Wood

Feedback from massive stars is thought to play an important role in the evolution of molecular clouds. In this work we analyse the effects of stellar winds and supernovae (SNe) in the evolution of two massive ($\sim 10^6\,M_\odot$) giant…

Astrophysics of Galaxies · Physics 2016-10-11 Ramon Rey-Raposo , Clare Dobbs , Oscar Agertz , Christian Alig

Understanding how galaxies maintain the inefficiency of star formation with physically self-consistent models is a central problem for galaxy evolution. Although numerous theoretical models have been proposed in recent decades, the debate…

High Energy Astrophysical Phenomena · Physics 2018-10-24 Ya-Ping Li , Feng Yuan , Houjun Mo , Doosoo Yoon , Zhao-Ming Gan , Luis C. Ho , Bo Wang , Jeremiah P. Ostriker , Luca Ciotti

Recent zoom-in cosmological simulations have shown that stellar feedback can flatten the inner density profile of the dark matter halo in low-mass galaxies. A correlation between the stellar/gas velocity dispersion ($\sigma_{star}$,…

The relation between the star formation rate and the kinetic energy increase in a region containing a large number of stellar sources is investigated as a possible prescription for star formation feedback in larger scale galaxy evolution…

Astrophysics · Physics 2009-10-31 John Scalo , David Chappell