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Related papers: Angular momentum evolution for galaxies in a Lambd…

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We present a suite of six high-resolution chemo-dynamical simulations of isolated galaxies, spanning observed disk-dominated environments on the star-forming main sequence, as well as quenched, bulge-dominated environments. We compare and…

I review the insights emerging from recent large kinematic surveys of galaxies at low redshift, with particular reference to the SAMI, CALIFA and MaNGA surveys. These new observations provide a more comprehensive picture of the angular…

Astrophysics of Galaxies · Physics 2020-03-04 Matthew Colless

We present adaptive optics assisted integral field spectroscopy of 34 star-forming galaxies at $z$ = 0.8-3.3 selected from the HiZELS narrow-band survey. We measure the kinematics of the ionised interstellar medium on $\sim$1 kpc scales,…

The specific angular momentum of Cold Dark Matter (CDM) halos in a $\Lambda$CDM universe is investigated. Their dimensionless specific angular momentum $\lambda'=\frac{j}{\sqrt{2}V_{vir} R{vir}}$ with $V_{vir}$ and $R_{vir}$ the virial…

Astrophysics · Physics 2009-11-10 Elena D'Onghia , Andreas Burkert

The $\Lambda$CDM scenario to form galaxies encounters many problems when confronted with observations, namely the prediction of dark matter cusps in all galaxies, and in particular in dwarf irregulars, dominated by dark matter, or the low…

Astrophysics · Physics 2007-05-23 Francoise Combes

In this work we introduce a physically motivated method of performing disc/spheroid decomposition of simulated galaxies, which we apply to the Eagle sample. We make use of the HEALPix package to create Mollweide projections of the angular…

Astrophysics of Galaxies · Physics 2021-01-14 Dimitrios Irodotou , Peter A. Thomas

We present a set of hydrodynamical/Nbody controlled simulations of isolated gas rich galaxies that self-consistently include SN feedback and a detailed chemical evolution model, both tested in cosmological simulations. The initial…

Astrophysics of Galaxies · Physics 2015-06-16 J. Perez , O. Valenzuela , P. Tissera , L. Michel-Dansac

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…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Romeel Davé , Benjamin D. Oppenheimer , Kristian Finlator

The total specific angular momentum j of a galaxy disk is matched with that of its dark matter halo, but the distributions are different, in that there is a lack of both low- and high-j baryons with respect to the CDM predictions. I…

Astrophysics of Galaxies · Physics 2018-08-21 Sarah M. Sweet , Deanne B. Fisher , Karl Glazebrook , Danail Obreschkow , Claudia D. P. Lagos , Liang Wang

We present a detailed analysis of the global and fine structure of four middle-mass disc galaxies obtained from simulations in a $\Lambda$CDM scenario. These objects have photometric D/T ratios in good agreement with those observed for…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 Mariola Doménech-Moral , Francisco J. Martínez-Serrano , Rosa Domínguez-Tenreiro , Arturo Serna

We investigate the properties of a galaxy similar to the Milky Way within the context of standard disk formation theory in a LCDM universe. Using the standard assumption that baryons conserve specific angular momentum when they collapse, we…

Astrophysics · Physics 2007-05-23 Rachel S. Somerville

We show that the stellar specific angular momentum j_*, mass M_*, and bulge fraction beta_* of normal galaxies of all morphological types are consistent with a simple model based on a linear superposition of independent disks and bulges. In…

Astrophysics of Galaxies · Physics 2018-12-12 S. Michael Fall , Aaron J. Romanowsky

Massive and diffuse haloes of hot gas (coronae) are important intermediaries between cosmology and galaxy evolution, storing mass and angular momentum acquired from the cosmic web until eventual accretion on to star-forming discs. We…

Astrophysics of Galaxies · Physics 2017-01-20 Gabriele Pezzulli , Filippo Fraternali , James Binney

Throughout the Hubble time, gas makes its way from the intergalactic medium into galaxies fuelling their star formation and promoting their growth. One of the key properties of the accreting gas is its angular momentum, which has profound…

Astrophysics of Galaxies · Physics 2020-03-04 Filippo Fraternali , Gabriele Pezzulli

We numerically simulate some of the most critical physical processes in galaxy formation: The supernova feedback, in conjunction with gasdynamics and gravity, plays a crucial role in determining how galaxies arise within the context of a…

Astrophysics · Physics 2015-06-24 G. Yepes , R. Kates , A. Khokhlov , A. Klypin

The formation of compact objects like stars and black holes is strongly constrained by the requirement that nearly all of the initial angular momentum of the diffuse material from which they form must be removed or redistributed during the…

Solar and Stellar Astrophysics · Physics 2010-01-06 Richard B. Larson

We study the two main constituent galaxies of a constrained simulation of the Local Group as candidates for the Milky Way (MW) and Andromeda (M31). We focus on the formation of the stellar discs and its relation to the formation of the…

The surface brightness distribution in the majority of stellar galactic discs falls off exponentially. Often what lies beyond such a stellar disc is the neutral hydrogen gas whose distribution also follows a nearly exponential profile at…

Astrophysics of Galaxies · Physics 2015-06-22 Kanak Saha , Chanda J. Jog

Models of the very early universe, including inflationary models, are argued to produce varying universe domains with different values of fundamental constants and cosmic parameters. Using the cosmological hydrodynamical simulation code…

Cosmology and Nongalactic Astrophysics · Physics 2018-04-10 Luke A. Barnes , Pascal J. Elahi , Jaime Salcido , Richard G. Bower , Geraint F. Lewis , Tom Theuns , Matthieu Schaller , Robert A. Crain , Joop Schaye

We introduce a new model for the structure and evolution of the gas in galactic discs. In the model the gas is in vertical pressure and energy balance. Star formation feedback injects energy and momentum, and non-axisymmetric torques…

Astrophysics of Galaxies · Physics 2018-04-25 Mark R. Krumholz , Blakesley Burkhart , John C. Forbes , Roland M. Crocker
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