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相关论文: On the interplay between star formation and feedba…

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Stellar feedback plays a key role in galaxy formation by regulating star formation, driving interstellar turbulence and generating galactic scale outflows. Although modern simulations of galaxy formation can resolve scales of 10-100 pc,…

宇宙学与河外天体物理 · 物理学 2015-06-11 Oscar Agertz , Andrey V. Kravtsov , Samuel N. Leitner , Nickolay Y. Gnedin

Feedback from massive stars is believed to play a critical role in shaping the galaxy mass function, the structure of the interstellar medium (ISM), and the low efficiency of star formation, but the exact form of the feedback is uncertain.…

宇宙学与河外天体物理 · 物理学 2012-06-22 Philip F. Hopkins , Eliot Quataert , Norman Murray

The interplay of star formation and supernova (SN) feedback in galaxy formation is a key element for understanding galaxy evolution. Since these processes occur at small scales, it is necessary to have sub-grid models that recover their…

星系天体物理 · 物理学 2022-09-15 Arturo Nuñez-Castiñeyra , Emmanuel Nezri , Julien Devriendt , Romain Teyssier

We present a suite of galaxy formation simulations that directly model star cluster formation and disruption. Starting from a model previously developed by our group, here we introduce several improvements to the prescriptions for cluster…

星系天体物理 · 物理学 2022-05-04 Gillen Brown , Oleg Y. Gnedin

We use cosmological zoom-in simulations of galaxy formation in a Milky Way (MW)-sized halo started from identical initial conditions to investigate the evolution of galaxy sizes, baryon fractions, morphologies and angular momenta in runs…

星系天体物理 · 物理学 2017-02-15 Oscar Agertz , Andrey V. Kravtsov

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…

星系天体物理 · 物理学 2018-07-25 Hui Li , Oleg Y. Gnedin , Nickolay Y. Gnedin

We present a series of high-resolution cosmological simulations of galaxy formation to z=0, spanning halo masses ~10^8-10^13 M_sun, and stellar masses ~10^4-10^11. Our simulations include fully explicit treatment of both the multi-phase ISM…

宇宙学与河外天体物理 · 物理学 2014-11-13 Philip F. Hopkins , Dusan Keres , Jose Onorbe , Claude-Andre Faucher-Giguere , Eliot Quataert , Norm Murray , James S. Bullock

We present a novel method for including the effects of early (pre-supernova) feedback in simulations of galaxy evolution. Rather than building a model which attempts to match idealized, small-scale simulations or analytic approximations, we…

星系天体物理 · 物理学 2022-06-29 Benjamin W. Keller , J. M. Diederik Kruijssen , Mélanie Chevance

Using a suite of isolated $L_\star$ galaxy simulations, we show that global depletion times and star-forming gas mass fractions in simulated galaxies exhibit systematic and well-defined trends as a function of the local star formation…

星系天体物理 · 物理学 2018-06-27 Vadim A. Semenov , Andrey V. Kravtsov , Nickolay Y. Gnedin

Direct comparisons between galaxy simulations and observations that both reach scales < 100 pc are strong tools to investigate the cloud-scale physics of star formation and feedback in nearby galaxies. Here we carry out such a comparison…

Feedback from supernovae is essential to understanding the self-regulation of star formation in galaxies. However, the efficacy of the process in a cosmological context remains unclear due to excessive radiative losses during the shock…

星系天体物理 · 物理学 2015-06-04 Taysun Kimm , Renyue Cen , Julien Devriendt , Yohan Dubois , Adrianne Slyz

We use simulations with realistic models for stellar feedback to study galaxy mergers. These high resolution (1 pc) simulations follow formation and destruction of individual GMCs and star clusters. The final starburst is dominated by in…

宇宙学与河外天体物理 · 物理学 2013-07-02 Philip F. Hopkins , Thomas J. Cox , Lars Hernquist , Desika Narayanan , Christopher C. Hayward , Norman Murray

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…

星系天体物理 · 物理学 2017-06-14 Michael J. Butler , Jonathan C. Tan , Romain Teyssier , Joakim Rosdahl , Sven Van Loo , Sarah Nickerson

We use cosmological simulations in order to study the effects of supernova (SN) feedback on the formation of a Milky Way-type galaxy of virial mass ~10^12 M_sun/h. We analyse a set of simulations run with the code described by Scannapieco…

天体物理学 · 物理学 2009-11-13 Cecilia Scannapieco , Patricia B. Tissera , Simon D. M. White , Volker Springel

Stellar feedback influences the star formation rate (SFR) and the interstellar medium of galaxies in ways that are difficult to quantify numerically, because feedback is an essential ingredient of realistic simulations. To overcome this, we…

Accurate modeling of supernova (SN) feedback in galaxy formation simulations is complicated by energy conservation violations arising from the vector nature of momentum injection. We present a mechanical feedback scheme addressing two key…

星系天体物理 · 物理学 2026-04-28 Takashi Okamoto

We use a high-resolution grid-based hydrodynamics method to simulate the multi-phase interstellar medium in a Milky Way-size quiescent disk galaxy. The models are global and three-dimensional, and include a treatment of star formation and…

天体物理学 · 物理学 2009-11-13 Elizabeth J. Tasker , Greg L. Bryan

Regulating the available gas mass inside galaxies proceeds through a delicate balance between inflows and outflows, but also through the internal depletion of gas due to star formation. At the same time, stellar feedback is the internal…

星系天体物理 · 物理学 2021-02-17 Michael Kretschmer , Romain Teyssier

Context. The impact of stellar feedback on the Kennicutt-Schmidt law (KS law), which relates star formation rate (SFR) to surface gas density, is a topic of ongoing debate. The interpretation of individual cloud observations is challenging…

星系天体物理 · 物理学 2023-12-01 Paolo Suin , Annie Zavagno , Tine Colman , Patrick Hennebelle , Antoine Verliat , Delphine Russeil

I review the current state of numerical simulations of stellar feedback in the context of star formation at scales ranging from the formation of individual stars to models of galaxy formation including cosmic reionisation. I survey the…

星系天体物理 · 物理学 2015-08-26 James E. Dale
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