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Energy and momentum feedback from stars is a key element of models for galaxy formation and interstellar medium dynamics, but resolving the relevant length scales to directly include this feedback remain out of reach of current-generation…

Astrophysics of Galaxies · Physics 2024-10-10 Yvonne A. Fichtner , Jonathan Mackey , Luca Grassitelli , Emilio Romano-Díaz , Cristiano Porciani

We present a suite of high resolution radiation hydrodynamic simulations of a small patch ($1 \ {\rm kpc}^2$) of the inter-stellar medium (ISM) performed with Arepo-RT, with the aim to quantify the efficacy of various feedback processes…

Astrophysics of Galaxies · Physics 2020-01-08 Rahul Kannan , Federico Marinacci , Christine M. Simpson , Simon C. O. Glover , Lars Hernquist

We present results on the properties of extreme gas outflows in massive ($\rm M_* \sim$10$^{11} \ \rm M_{\odot}$), compact, starburst ($\rm SFR \sim$$200 \, \rm M_{\odot} \ yr^{-1}$) galaxies at z = $0.4-0.7$ with very high star formation…

The SILCC project (SImulating the Life-Cycle of molecular Clouds) aims at a more self-consistent understanding of the interstellar medium (ISM) on small scales and its link to galaxy evolution. We present three-dimensional…

The probability distribution functions (PDF) of density of the ISM in galactic disks and global star formation rate are discussed. Three-dimensional hydrodynamic simulations show that the PDFs in globally stable, inhomogeneous ISM in…

Astrophysics · Physics 2011-02-11 Keiichi Wada , Colin Norman

We consider the dynamics of and emission from growing superbubbles in a stratified interstellar gaseous disc driven by energy release from supernovae explosions in stellar clusters with {masses $M_{cl}= 10^5-1.6\times 10^6~M_\odot$}.…

Astrophysics of Galaxies · Physics 2023-02-08 Evgenii O. Vasiliev , Sergey A. Drozdov , Biman B. Nath , Ralf-Jürgen Dettmar , Yuri A. Shchekinov

Two competing models, gravitational instability-driven transport and stellar feedback, have been proposed to interpret the high velocity dispersions observed in high-redshift galaxies. We study the major mechanisms to drive the turbulence…

Astrophysics of Galaxies · Physics 2021-07-07 Xiaoling Yu , Fuyan Bian , Mark R. Krumholz , Yong Shi , Songlin Li , Jianhang Chen

We measure the star formation efficiency (SFE), the star formation rate per unit gas, in 23 nearby galaxies and compare it to expectations from proposed star formation laws and thresholds. We use HI maps from THINGS and derive H2 maps from…

The interstellar medium of galaxies, with temperatures reaching several million degrees, provides a pivotal perspective for understanding the physical and chemical properties of star formation, galactic evolution, and their associated…

Astrophysics of Galaxies · Physics 2025-06-24 Chunyi Zhang , Junfeng Wang

We study the structure of spatially resolved, line-of-sight velocity dispersion for galaxies in the Epoch of Reionization (EoR) traced by [CII] $158\mu\rm{m}$ line emission. Our laboratory is a simulated prototypical Lyman-break galaxy,…

Astrophysics of Galaxies · Physics 2020-10-21 M. Kohandel , A. Pallottini , A. Ferrara , S. Carniani , S. Gallerani , L. Vallini , A. Zanella , C. Behrens

I provide an observational review of the properties of starburst-driven galactic superwinds, focusing mainly on recent results pertinent to the transport of metals and energy into the IGM. Absorption-line studies are providing rich…

Astrophysics · Physics 2007-05-23 D. K. Strickland

We present simulations of the multi-phase interstellar medium (ISM) at solar neighbourhood conditions including thermal and non-thermal ISM processes, star cluster formation, and feedback from massive stars: stellar winds, hydrogen ionising…

We report the detection of fast (~ 1000 km/s), massive outflows of neutral gas observed -- using the WSRT -- as 21-cm HI absorption against the strong radio continuum of seven radio sources. The neutral outflows occur, in at least somes…

Astrophysics · Physics 2009-11-11 R. Morganti , C. N. Tadhunter , T. A. Oosterloo

We performed a suit of three-dimensional hydrodynamical simulations with a resolution of $\sim10$ parsecs to investigate the development of multiphase galactic wind in M82. The star formation and related feedback processes are solved…

Astrophysics of Galaxies · Physics 2025-03-17 Xue-Fu Li , Weishan Zhu , Tian-Rui Wang , Long-Long Feng

The radial distribution of gas within galactic haloes is connected to the star formation rate and the nature of baryon-driven feedback processes. Using six variants of the hydrodynamic simulation Simba, we study the impact of different…

Astrophysics of Galaxies · Physics 2024-12-04 Daniele Sorini , Sownak Bose , Romeel Davé , Daniel Anglés-Alcázar

We examine the central stellar velocity dispersion of subhalos based on IllustrisTNG cosmological hydrodynamic simulations. The central velocity dispersion is a fundamental observable that links galaxies with their dark matter subhalos. We…

Astrophysics of Galaxies · Physics 2024-02-23 Jubee Sohn , Margaret J. Geller , Josh Borrow , Mark Vogelsberger

We compare the molecular and ionized gas velocity dispersion of 9 nearby turbulent disks, analogues to high-redshift galaxies, from the DYNAMO sample using new ALMA and GMOS/Gemini observations. We combine our sample with 12 galaxies at…

(Abridged) We examine the evolution of the black hole mass - stellar velocity dispersion (M-sigma) relation over cosmic time using simulations of galaxy mergers that include feedback from supermassive black hole growth. We consider mergers…

Type Ia supernovae (SNe Ia) provide unique and important feedback in quiescent galaxies, but their impact has been underappreciated. In this paper, we analyze a series of high-resolution simulations to examine the energetics and turbulence…

Astrophysics of Galaxies · Physics 2020-07-29 Miao Li , Yuan Li , Greg L. Bryan , Eve C. Ostriker , Eliot Quataert

We present a suite of 3D multi-physics MHD simulations following star formation in isolated turbulent molecular gas disks ranging from 5 to 500 parsecs in radius. These simulations are designed to survey the range of surface densities…