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Related papers: Angular momentum evolution of galaxies in EAGLE

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We use the TNG100 simulation of the IllustrisTNG project to investigate the stellar specific angular momenta ($j_{\ast}$) of $\sim$12,000 central galaxies at $z=0$ in a full cosmological context, with stellar masses ($M_{\ast}$) ranging…

[Abridged] We study the angular-momentum profiles of a statistical sample of halos drawn from a high-resolution N-body simulation of the LCDM cosmology. We find that the cumulative mass distribution of specific angular momentum, j, in a…

[Abridged] One of the most outstanding problems related to numerical models of galaxy formation is the so-called ``angular momentum catastrophe''. We study the evolution of the angular momentum from z~0.6 to z=0 to further our understanding…

Astrophysics · Physics 2009-11-13 M. Puech , F. Hammer , M. D. Lehnert , H. Flores

It is now possible for hydrodynamical simulations to reproduce a representative galaxy population. Accordingly, it is timely to assess critically some of the assumptions of traditional semi-analytic galaxy formation models. We use the Eagle…

We present results from thirteen cosmological simulations that explore the parameter space of the "Evolution and Assembly of GaLaxies and their Environments" (EAGLE) simulation project. Four of the simulations follow the evolution of a…

We study the origin of misalignments between the stellar and star-forming gas components of simulated galaxies in the EAGLE simulations. We focus on galaxies with stellar masses $\geq 10^9$ M$_\odot$ at 0$\leq$z$\leq$1. We compare the…

Astrophysics of Galaxies · Physics 2024-05-07 Catalina I. Casanueva , Claudia del P. Lagos , Nelson D. Padilla , Thomas A. Davison

We extend our previous work focused at $z\sim0$, studying the redshift evolution of galaxy dynamical properties using the state-of-the-art semi-analytic model GAEA: we show that the predicted size-mass relation for disky/star forming and…

Astrophysics of Galaxies · Physics 2019-06-26 Anna Zoldan , Gabriella De Lucia , Lizhi Xie , Fabio Fontanot , Michaela Hirschmann

The relations between the specific angular momenta ($j$) and masses ($M$) of galaxies are often used as a benchmark in analytic models and hydrodynamical simulations as they are considered to be amongst the most fundamental scaling…

Current observational results show that both late-and-early-type galaxies follow tight mass-size planes, on which physical properties such as age, velocity dispersion and metallicities correlate with the scatter on the plane. We study the…

Astrophysics of Galaxies · Physics 2019-08-28 María Sol Rosito , Patricia Tissera , Susana Pedrosa , Claudia Lagos

The stellar disk size of a galaxy depends on the ratio of the disk stellar mass to the halo mass, $m_\star \equiv M_\star/M_{\rm dh}$, and the fraction of the dark halo angular momentum transferred to the stellar disk, $j_\star \equiv…

Astrophysics of Galaxies · Physics 2018-02-21 Taku Okamura , Kazuhiro Shimasaku , Ryota Kawamata

Until a decade ago, galaxy formation simulations were unable to simultaneously reproduce the observed angular momentum (AM) of galaxy disks and bulges. Improvements in the interstellar medium and stellar feedback modelling, together with…

Astrophysics of Galaxies · Physics 2018-11-01 Claudia del P. Lagos

Here we explore the evolution of galaxy ensembles at early times by writing the in situ stellar mass growth of galaxies purely as a stationary stochastic (e.g., quasi-steady state) process. By combining the mathematics of such processes…

Astrophysics of Galaxies · Physics 2016-10-24 Daniel D. Kelson , Andrew J. Benson , Louis E. Abramson

The importance of angular momentum in regulating the sizes of galactic disks and by this their star formation history is highlighted. Tidal torques and accretion of satellites in principle provide enough angular momentum to form disks with…

Astrophysics · Physics 2016-01-27 Andreas Burkert , Elena D'Onghia

We measure the stellar specific angular momentum jstar=Jstar/Mstar in four nearby (z~0.1) disk galaxies that have stellar masses Mstar near the break M* of the galaxy mass function, but look like typical star-forming disks at z~2 in terms…

Theory predicts that cosmological gas accretion plays a fundamental role fuelling star formation in galaxies. However, a detailed description of the accretion process to be used when interpreting observations is still lacking. Using the…

Astrophysics of Galaxies · Physics 2021-06-30 L. Scholz-Diaz , J. Sanchez Almeida , C. Dalla Vecchia

We study the spatially-resolved stellar specific angular momentum $j_*$ in a high-quality sample of 24 CALIFA galaxies covering a broad range of visual morphology, accounting for stellar velocity and velocity dispersion. The shape of the…

Utilizing a kinematic decomposition of simulated galaxies, we focus on galaxies with tiny kinematically inferred stellar halos, indicative of weak external influences. We investigate the intricate interplay between internal (natural) and…

Astrophysics of Galaxies · Physics 2024-06-12 Min Du , Hong-Chuan Ma , Wen-Yu Zhong , Luis C. Ho , Shihong Liao , Yingjie Peng

Mass and specific angular momentum are two fundamental physical parameters of galaxies. We present measurements of the baryonic mass and specific angular momentum of 11 void dwarf galaxies derived from neutral hydrogen (H{\sc i}) synthesis…

Astrophysics of Galaxies · Physics 2018-06-13 Sushma Kurapati , Jayaram N. Chengalur , Simon Pustilnik , Peter Kamphuis

[ABRIDGED] Galaxy evolution is shaped by internal and external mechanisms that regulate the baryon cycle and star formation activity. We present a theoretical framework based on the GAlaxy Evolution and Assembly (GAEA) semi-analytic model.…

We developed angular momentum evolution models for 0.5 and 0.8 $M_{\odot}$ stars. The parametric models include a new wind braking law based on recent numerical simulations of magnetised stellar winds, specific dynamo and mass-loss rate…

Solar and Stellar Astrophysics · Physics 2015-05-13 Florian Gallet , Jérôme Bouvier