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Related papers: The Impact of Feedback on Disk Galaxy Scaling Rela…

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We present the fourth of the Cholla Galactic OutfLow Simulations suite (CGOLS). Using a physically-motivated prescription for clustered supernova feedback, we successfully drive a multiphase outflow from a disk galaxy. The high resolution…

Astrophysics of Galaxies · Physics 2020-06-03 Evan E. Schneider , Eve C. Ostriker , Brant E. Robertson , Todd A. Thompson

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…

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,…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Oscar Agertz , Andrey V. Kravtsov , Samuel N. Leitner , Nickolay Y. Gnedin

Recent observational results found a bend in the Tully-Fisher Relation in such a way that low mass systems lay below the linear relation described by more massive galaxies. We intend to investigate the origin of the observed features in the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Maria E. De Rossi , Patricia B. Tissera , Susana E. Pedrosa

The clumpy nature of gas-rich galaxies at cosmic noon raises the question of universality of the scaling relations and average properties of the star-forming structures. Using controlled simulations of disk galaxies and varying only the gas…

Astrophysics of Galaxies · Physics 2024-07-03 Florent Renaud , Oscar Agertz , Alessandro B. Romeo

Star-forming disk galaxies at high redshift are often subject to violent disk instability, characterized by giant clumps whose fate is yet to be understood. The main question is whether the clumps disrupt within their dynamical timescale…

Using high-resolution simulations with explicit treatment of stellar feedback physics based on the FIRE (Feedback in Realistic Environments) project, we study how galaxy formation and the interstellar medium (ISM) are affected by magnetic…

The sample of dwarf galaxies with measured central black hole masses $M$ and velocity dispersions $\sigma$ has recently doubled, and gives a close fit to the extrapolation of the $M \propto \sigma$ relation for more massive galaxies. We…

Astrophysics of Galaxies · Physics 2020-12-23 Andrew King , Rebecca Nealon

We present a simple heuristic model to demonstrate how feedback related to the galaxy formation process can result in a scale-dependent bias of mass versus light, even on very large scales. The model invokes the idea that galaxies form…

Astrophysics · Physics 2008-11-26 Peter Coles , Pirin Erdogdu

The stellar metallicity gradients of disc galaxies provide information on the disc assembly, star formation processes and chemical evolution. They also might store information on dynamical processes which could affect the distribution of…

We analyze the far-ultraviolet spectroscopy of 20 young and massive star clusters (YSCs) in 11 nearby star-forming galaxies. We probe the interstellar gas intervening along the line of sight, detecting several metal absorption lines of a…

We have performed a high mass and force resolution simulation of an idealized galaxy forming from dissipational collapse of gas embedded in a spherical dark matter halo. The simulation includes star formation and effects of stellar…

We present semi-analytic models of galactic outflows, constrained by available observations on high redshift star formation and reionization. Galactic outflows are modeled in a manner akin to models of stellar wind blown bubbles. Large…

Astrophysics · Physics 2009-11-13 Saumyadip Samui , Kandaswamy Subramanian , Raghunathan Srianand

Self-gravity and stellar feedback are capable of driving turbulence and transporting mass and angular momentum in disk galaxies, but the balance between them is not well understood. In the previous paper in this series, we showed that…

Astrophysics of Galaxies · Physics 2016-08-17 Nathan J. Goldbaum , Mark R. Krumholz , John C. Forbes

We use a state-of-the-art semi-analytic model to study the size and the specific angular momentum of galaxies. Our model includes a specific treatment for the angular momentum exchange between different galactic components. Disk scale radii…

Astrophysics of Galaxies · Physics 2018-08-28 Anna Zoldan , Gabriella De Lucia , Lizhi Xie , Fabio Fontanot , Michaela Hirschmann

Several active galaxies show strong evidence for fast ($v_{\rm out} \sim 1000~{\rm km\,s}^{-1}$) massive ($\dot{M} =$ several $\times 1000~\msun\,{\rm yr}^{-1}$) gas outflows. Such outflows are expected on theoretical grounds once the…

Astrophysics of Galaxies · Physics 2014-03-05 Kastytis Zubovas , Andrew King

Galactic winds play essential roles in the evolution of galaxies through the feedback they provide. Despite intensive studies of winds, the radial distributions of their properties and feedback are rarely observable. Here we present such…

Astrophysics of Galaxies · Physics 2023-10-03 Xinfeng Xu , Timothy Heckman , Michitoshi Yoshida , Alaina Henry , Youichi Ohyama

We study the impact of stellar winds and supernovae on the multi-phase interstellar medium using three-dimensional hydrodynamical simulations carried out with FLASH. The selected galactic disc region has a size of (500 pc)$^2$ x $\pm$ 5 kpc…

Astrophysics of Galaxies · Physics 2017-01-25 A. Gatto , S. Walch , T. Naab , P. Girichidis , R. Wünsch , S. C. O. Glover , R. S. Klessen , P. C. Clark , T. Peters , D. Derigs , C. Baczynski , J. Puls

The relation between the mass accretion rate onto the circumstellar disc and the rate of mass ejection by magnetically driven winds is investigated using three-dimensional magnetohydrodynamics simulations. Using a spherical cloud core with…

Solar and Stellar Astrophysics · Physics 2017-07-05 Yuko Matsushita , Masahiro N. Machida , Yuya Sakurai , Takashi Hosokawa

Here I report the scaling relation between the baryonic masses and the scale lengths of stellar discs from $\sim$1000 morphologically late-type galaxies. The baryonic mass-size relation is a single power-law $R_\ast \propto M_b^{0.38}$…

Astrophysics of Galaxies · Physics 2017-12-20 Po-Feng Wu