Making Galaxies in a Cosmological Context: The Need for Early Stellar Feedback
G. S. Stinson,Chris B. Brook,Andrea V. Macciò,James Wadsley,Thomas R. Quinn,Hugh M. P. Couchman +5 more
Reads0
Chats0
TLDR
The Making Galaxies in a Cosmological Context (MaGICC) program of smoothed particle hydrodynamics (SPH) simulations was introduced in this paper.Abstract:
We introduce the Making Galaxies in a Cosmological Context (MaGICC) program of smoothed particle hydrodynamics (SPH) simulations. We describe a parameter study of galaxy formation simulations of an L* galaxy that uses early stellar feedback combined with supernova feedback to match the stellar mass--halo mass relationship. While supernova feedback alone can reduce star formation enough to match the stellar mass--halo mass relationship, the galaxy forms too many stars before z=2 to match the evolution seen using abundance matching. Our early stellar feedback is purely thermal and thus operates like a UV ionization source as well as providing some additional pressure from the radiation of massive, young stars. The early feedback heats gas to >10^6 K before cooling to 10^4 K. The pressure from this hot gas creates a more extended disk and prevents more star formation prior to z=1 than supernovae feedback alone. The resulting disk galaxy has a flat rotation curve, an exponential surface brightness profile, and matches a wide range of disk scaling relationships. The disk forms from the inside-out with an increasing exponential scale length as the galaxy evolves. Overall, early stellar feedback helps to simulate galaxies that match observational results at low and high redshifts.read more
Citations
More filters
Journal ArticleDOI
The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
Joop Schaye,Robert A. Crain,Richard G. Bower,Michelle Furlong,Matthieu Schaller,Tom Theuns,Tom Theuns,Claudio Dalla Vecchia,Claudio Dalla Vecchia,Carlos S. Frenk,Ian G. McCarthy,John C. Helly,Adrian Jenkins,Yetli Rosas-Guevara,Simon D. M. White,Maarten Baes,C. M. Booth,C. M. Booth,Peter Camps,Julio F. Navarro,Yan Qu,Alireza Rahmati,Till Sawala,Peter A. Thomas,James W. Trayford +24 more
TL;DR: The Virgo Consortium's EAGLE project as discussed by the authors is a suite of hydrodynamical simulations that follow the formation of galaxies and black holes in representative volumes, where thermal energy is injected into the gas, allowing winds to develop without predetermined speed or mass loading factors.
Journal ArticleDOI
Galactic star formation and accretion histories from matching galaxies to dark matter haloes
TL;DR: In this article, a multi-epoch abundance matching (MEAM) model was proposed to determine the relationship between the stellar masses of galaxies and the masses of their host dark matter haloes over the entire cosmic history from z � 4 to the present.
Journal ArticleDOI
Galaxies on FIRE (Feedback In Realistic Environments): stellar feedback explains cosmologically inefficient star formation
Philip F. Hopkins,Philip F. Hopkins,Dušan Kereš,Jose Oñorbe,Claude André Faucher-Giguère,Claude André Faucher-Giguère,Eliot Quataert,Norman Murray,James S. Bullock +8 more
TL;DR: In this paper, the authors present a series of high-resolution cosmological simulations of galaxy formation to z = 0, spanning halo masses ∼ 10.8−10.13−M⊙, and stellar masses ∼10.4−10^(11)
Dwarf galaxies, cold dark matter, and biased galaxy formation
Avishai Dekel,Joseph Silk +1 more
TL;DR: In this article, a reexamination is conducted of the formation of dwarf, diffuse, metal-poor galaxies due to supernova-driven winds, in view of data on the systematic properties of dwarfs in the Local Group and Virgo Cluster.
Journal ArticleDOI
Simulating galaxy formation with the IllustrisTNG model
Annalisa Pillepich,Annalisa Pillepich,Volker Springel,Volker Springel,Dylan Nelson,Shy Genel,Shy Genel,Jill Naiman,Rüdiger Pakmor,Lars Hernquist,Paul Torrey,Mark Vogelsberger,Rainer Weinberger,Federico Marinacci +13 more
TL;DR: In this article, an updated physical model to simulate the formation and evolution of galaxies in cosmological, large-scale gravity+magnetohydrodynamical simulations with the moving mesh code AREPO is introduced.
References
More filters
Journal ArticleDOI
Galactic stellar and substellar initial mass function
TL;DR: A review of the present-day mass function and initial mass function in various components of the Galaxy (disk, spheroid, young, and globular clusters) and in conditions characteristic of early star formation is presented in this paper.
Journal ArticleDOI
Starburst99: Synthesis Models for Galaxies with Active Star Formation
Claus Leitherer,Daniel Schaerer,Jeffrey D. Goldader,Rosa M. González Delgado,Carmelle Robert,Denis Foo Kune,Denis Foo Kune,Duilia F. de Mello,Daniel Devost,Daniel Devost,Timothy M. Heckman +10 more
TL;DR: Starburst99 as mentioned in this paper is a comprehensive set of model predictions for spectrophotometric and related properties of galaxies with active star formation, which is an improved and extended version of the data set previously published by Leitherer & Heckman.
Journal ArticleDOI
Core condensation in heavy halos: a two-stage theory for galaxy formation and clustering
Simon D. M. White,Martin J. Rees +1 more
Journal ArticleDOI
CLOUDY 90: Numerical Simulation of Plasmas and Their Spectra
TL;DR: In this article, the authors describe version 90 (C90) of the code, paying particular attention to changes in the atomic database and numerical methods that have affected predictions since the last publicly available version, C84.
Journal ArticleDOI
Cooling Functions for Low-Density Astrophysical Plasmas
TL;DR: In this article, the cooling functions for a plasma slab are investigated under equilibrium and nonequilibrium conditions, over a range of 10 4 -10 85 K and for a variety of abundances.
Related Papers (5)
The EAGLE project: Simulating the evolution and assembly of galaxies and their environments
Joop Schaye,Robert A. Crain,Richard G. Bower,Michelle Furlong,Matthieu Schaller,Tom Theuns,Tom Theuns,Claudio Dalla Vecchia,Claudio Dalla Vecchia,Carlos S. Frenk,Ian G. McCarthy,John C. Helly,Adrian Jenkins,Yetli Rosas-Guevara,Simon D. M. White,Maarten Baes,C. M. Booth,C. M. Booth,Peter Camps,Julio F. Navarro,Yan Qu,Alireza Rahmati,Till Sawala,Peter A. Thomas,James W. Trayford +24 more