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相关论文: MUFASA: Galaxy Formation Simulations With Meshless…

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We examine galaxy star formation rates (SFRs), metallicities, and gas contents predicted by the MUFASA cosmological hydrodynamic simulations, which employ meshless hydrodynamics and novel feedback prescriptions that yield a good match to…

星系天体物理 · 物理学 2017-01-25 Romeel Davé , Mika H. Rafieferantsoa , Robert J. Thompson , Philip F. Hopkins

Numerical simulations have become a necessary tool to describe the complex interactions among the different processes involved in galaxy formation and evolution, unfeasible via an analytic approach. The last decade has seen a great effort…

星系天体物理 · 物理学 2017-07-19 Alessandro Lupi , Marta Volonteri , Joseph Silk

We use a cosmological hydrodynamic simulation calculated with Enzo and the semi-analytic galaxy formation model (SAM) GAMMA to address the chemical evolution of dwarf galaxies in the early universe. The long-term goal of the project is to…

星系天体物理 · 物理学 2018-06-06 Benoit Côté , Devin Silvia , Brian W. O'Shea , Britton Smith , John H. Wise

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

A tightly correlated star formation rate-stellar mass relation of star forming galaxies, or star-forming sequence (SFS), is a key feature in galaxy property-space that is predicted by modern galaxy formation models. We present a flexible…

The long-standing challenge of creating a Milky Way-like disk galaxy from cosmological simulations has motivated significant developments in both numerical methods and physical models in recent years. We investigate these two fundamental…

星系天体物理 · 物理学 2017-01-25 Qirong Zhu , Yuexing Li

(Abridged) By means of high-resolution cosmological simulations in the context of the LCDM scenario, the specific star formation rate (SSFR=SFR/Ms, Ms is the stellar mass)--Ms and stellar mass fraction (Fs=Ms/Mh, Mh is the halo mass)--Ms…

宇宙学与河外天体物理 · 物理学 2015-05-27 V. Avila-Reese , P. Colín , A. González-Samaniego , O. Valenzuela , C. Firmani , H. Velázquez , D. Ceverino

We investigate the evolution of the star formation rate-stellar mass relation (SFR-M*) and Galaxy Stellar Mass Function (GSMF) of z ~ 4-7 galaxies, using cosmological simulations run with the smoothed particle hydrodynamics code…

宇宙学与河外天体物理 · 物理学 2015-05-20 Antonios Katsianis , Edoardo Tescari , Stuart Wyithe

We present cosmological hydrodynamic simulations performed to study evolution of galaxy population. The simulations follow timed release of mass, energy, and metals by stellar evolution and employ phenomenological treatments of supernova…

星系天体物理 · 物理学 2014-09-15 Takashi Okamoto , Ikkoh Shimizu , Naoki Yoshida

The star formation rate density (SFRD) is an important tool in galaxy evolution that allows us to identify at which cosmic time galaxies are more efficient at forming stars. For low-mass star-forming galaxies, the SFRD as a function of…

星系天体物理 · 物理学 2025-04-07 G. G. Murrell , I. K. Baldry

Cosmological hydrodynamic simulations robustly predict that high-redshift galaxy star formation histories (SFHs) are smoothly-rising and vary with mass only by a scale factor. We use our latest simulations to test whether this scenario can…

宇宙学与河外天体物理 · 物理学 2015-05-19 Kristian Finlator , Benjamin D. Oppenheimer , Romeel Davé

[Abridged] We present the first results of hydrodynamical simulations that follow the formation of galaxies to z=0 in spherical regions of radius ~20 Mpc/h drawn from the Millennium Simulation. The regions have overdensities that deviate by…

We present a cosmological hydrodynamical simulation of a representative volume of the Universe, as part of the Making Galaxies in a Cosmological Context (MaGICC) project. MaGICC uses a thermal implementation for supernova and early stellar…

宇宙学与河外天体物理 · 物理学 2013-12-02 Rahul Kannan , Greg S. Stinson , Andrea V. Macciò , Chris Brook , Simone M. Weinmann , James Wadsley , H. M. P. Couchman

We examine the growth of the stellar content of galaxies from z=3-0 in cosmological hydrodynamic simulations incorporating parameterised galactic outflows. Without outflows, galaxies overproduce stellar masses (M*) and star formation rates…

宇宙学与河外天体物理 · 物理学 2015-05-27 Romeel Davé , Benjamin D. Oppenheimer , Kristian Finlator

It has been shown observationally that star formation (SF) correlates tightly with the presence of molecular hydrogen (H$_2$). Therefore it would be important to investigate its implication on galaxy formation in a cosmological context. In…

宇宙学与河外天体物理 · 物理学 2015-06-12 Robert Thompson , Kentaro Nagamine , Jason Jaacks , Jun-Hwan Choi

Although extensively investigated, the role of the environment in galaxy formation is still not well understood. In this context, the Galaxy Stellar Mass Function (GSMF) is a powerful tool to understand how environment relates to galaxy…

星系天体物理 · 物理学 2017-05-31 Nicola Malavasi , Lucia Pozzetti , Olga Cucciati , Sandro Bardelli , Olivier Ilbert , Andrea Cimatti

We introduce the Simba simulations, the next generation of the Mufasa cosmological galaxy formation simulations run with Gizmo's meshless finite mass hydrodynamics. Simba includes updates to Mufasa's sub-resolution star formation and…

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…

天体物理仪器与方法 · 物理学 2015-05-18 Charlotte Christensen , Thomas Quinn , Gregory Stinson , Jillian Bellovary , James Wadsley

Galaxy clusters are excellent probes to study the effect of environment on galaxy formation and evolution. Along with high-quality observational data, accurate cosmological simulations are required to improve our understanding of galaxy…

星系天体物理 · 物理学 2021-09-15 Syeda Lammim Ahad , Yannick M. Bahé , Henk Hoekstra , Remco F. J. van der Burg , Adam Muzzin
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