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We present a series of chemodynamical simulations of Magellanic-like systems consisting of two interacting, equal-mass dwarf galaxies orbiting a massive host galaxy, including feedback and star formation, tides, and ram pressure. We study…

星系天体物理 · 物理学 2021-01-27 David Williamson , Hugo Martel

We present our recently developed {\em galcon} approach to hydrodynamical cosmological simulations of galaxy clusters - a subgrid model added to the {\em Enzo} adaptive mesh refinement code - which is capable of tracking galaxies within the…

宇宙学与河外天体物理 · 物理学 2015-05-18 Yinon Arieli , Yoel Rephaeli , Michael L. Norman

We examine the growth and evolution of quenched galaxies in the Mufasa cosmological hydrodynamic simulations that include an evolving halo mass-based quenching prescription, with galaxy colours computed accounting for line-of-sight…

星系天体物理 · 物理学 2017-08-09 Romeel Davé , Mika H. Rafieferantsoa , Robert J. Thompson

We use a suite of hydrodynamics simulations of the interstellar medium (ISM) within a galactic disk, which include radiative transfer, a non-equilibrium model of molecular hydrogen, and a realistic model for star formation and feedback, to…

星系天体物理 · 物理学 2024-05-07 Ava Polzin , Andrey V. Kravtsov , Vadim A. Semenov , Nickolay Y. Gnedin

We present a suite of 16 high-resolution hydrodynamic simulations of an isolated dwarf galaxy (gaseous and stellar disk plus a stellar bulge) within an initially cuspy dark matter (DM) halo, including self-interactions between the DM…

星系天体物理 · 物理学 2022-04-20 Jan D. Burger , Jesús Zavala , Laura V. Sales , Mark Vogelsberger , Federico Marinacci , Paul Torrey

Despite the recent advancements in the field of galaxy formation and evolution, fully self-consistent simulations are still unable to make the detailed predictions necessary for the planned and ongoing large spectroscopic and photometry…

星系天体物理 · 物理学 2019-08-19 Ivan Minchev , Cristina Chiappini , Marie Martig

We present a new semi-analytical model of galaxy formation, GECO (Galaxy Evolution COde), aimed at a better understanding of when and how the two processes of star formation and galaxy assembly have taken place. Our model is structured into…

宇宙学与河外天体物理 · 物理学 2015-05-18 E. Ricciardelli , A. Franceschini

The current status of numerical simulations of galaxy formation is reviewed. After a short description of the main numerical simulation techniques, three sample applications illustrate how numerical simulations have provided deeper insight…

天体物理学 · 物理学 2009-10-31 Matthias Steinmetz

We use hydrodynamic simulations to examine how the baryonic components of galaxies are assembled, focusing on the relative importance of mergers and smooth accretion in the formation of ~L_* systems. In our primary simulation, which models…

天体物理学 · 物理学 2009-11-06 Chigurupati Murali , Neal Katz , Lars Hernquist , David H. Weinberg , Romeel Dave

Feedback from star formation is thought to play a key role in the formation and evolution of galaxies, but its implementation in cosmological simulations is currently hampered by a lack of numerical resolution. We present and test a…

天体物理学 · 物理学 2011-06-29 Claudio Dalla Vecchia , Joop Schaye

(Abridged) We use a combination of high resolution N-body simulations and semi-analytic techniques to follow the formation, the evolution and the chemical enrichment of cluster galaxies in a Lambda-CDM Universe. We model the transport of…

天体物理学 · 物理学 2008-11-26 Gabriella De Lucia , Guinevere Kauffmann , Simon D. M. White

A new semi-analytic modelling of galaxy evolution in the IR/submm is hereafter outlined. This type of approach successfully reproduces the optical properties of galaxies. We illustrate a simple extension to the IR/submm wavelength range by…

天体物理学 · 物理学 2007-05-23 B. Guiderdoni , E. Hivon , F. R. Bouchet

We build a theoretical picture of how the light from galaxies evolves across cosmic time. In particular, we predict the evolution of the galaxy spectral energy distribution (SED) by carefully integrating the star formation and metal…

星系天体物理 · 物理学 2020-06-23 Dian Triani , Darren Croton , Manodeep Sinha

Stars form in cold molecular clouds. However, molecular gas is difficult to observe because the most abundant molecule (H2) lacks a permanent dipole moment. Rotational transitions of CO are often used as a tracer of H2, but CO is much less…

For almost two decades the properties of "dwarf" galaxies have challenged the Cold Dark Matter (CDM) paradigm of galaxy formation. Most observed dwarf galaxies consists of a rotating stellar disc embedded in a massive DM halo with a near…

We use 80922 galaxies in the Galaxy And Mass Assembly (GAMA) survey to measure the galaxy luminosity function (LF) in different environments over the redshift range 0.04<z<0.26. The depth and size of GAMA allows us to define samples split…

We present the first systematic study of multi-domain map-to-map translation in galaxy formation simulations, leveraging deep generative models to predict diverse galactic properties. Using high-resolution magneto-hydrodynamical simulation…

星系天体物理 · 物理学 2026-02-18 Philipp Denzel , Yann Billeter , Frank-Peter Schilling , Elena Gavagnin

We use a robust analytical model together with a high-resolution hydrodynamical cosmological simulation to demonstrate that in a $\Lambda$ cold dark matter ($\Lambda$CDM) universe, a small fraction of dwarf galaxies inhabiting dark matter…

星系天体物理 · 物理学 2021-10-29 Alejandro Benitez-Llambay , Michele Fumagalli

Galaxy spectral energy distributions (SEDs) remain among the most challenging yet informative quantities to reproduce in simulations due to the large and complex mixture of physical processes that shape the radiation output of a galaxy.…

We have developed a new scheme to treat a multiphase interstellar medium in smoothed particle hydrodynamics simulations of galaxy formation. This scheme can represent a co-spatial mixture of cold and hot ISM components, and is formulated…

天体物理学 · 物理学 2009-09-25 Cecilia Scannapieco , Patricia B. Tissera , Simon D. M. White , Volker Springel
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