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Related papers: The Milky Way and Andromeda galaxies in a constrai…

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We study the build-up and survival of angular momentum in the stellar disc using a statistical suite of cosmological simulations of Milky Way-mass galaxies. Our results show that stellar kinematics at $z=0$ rarely recover the true times of…

Astrophysics of Galaxies · Physics 2026-05-13 Matthew D. A. Orkney , Chervin F. P. Laporte

The unusual morphologies of the Andromeda spiral galaxy (M31) and its dwarf companion M32 have been characterized observationally in great detail. The two galaxies' apparent proximity suggests that Andromeda's prominent star-forming ring as…

Astrophysics of Galaxies · Physics 2015-06-19 Marion Dierickx , Laura Blecha , Abraham Loeb

We investigate the angular momentum evolution of four disk galaxies residing in Milky Way-sized halos formed in cosmological zoom-in simulations with various sub-grid physics and merging histories. We decompose these galaxies kinematically…

Astrophysics of Galaxies · Physics 2017-02-08 Aleksandra Sokolowska , Pedro R. Capelo , S. Michael Fall , Lucio Mayer , Sijing Shen , Silvia Bonoli

One of the crucial components in simulating the growth and evolution of galaxies within a cosmological framework is the modeling of star formation (SF) and its corresponding feedback. Traditionally, the implemented SF law follows the…

Astrophysics of Galaxies · Physics 2025-08-14 Ezequiel Lozano , Cecilia Scannapieco , Sebastián E. Nuza , Yago Ascasibar , Luis Biaus , Federico G. Iza

We present a new approach to study galaxy evolution in a cosmological context. We combine cosmological merger trees and semi-analytic models of galaxy formation to provide the initial conditions for multi-merger hydrodynamic simulations. In…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-11 Benjamin P. Moster , Andrea V. Macciò , Rachel S. Somerville

Using the deepest and most complete observations of distant galaxies, we investigate the progenitors of present-day large spirals. Observations include spatially-resolved kinematics, detailed morphologies and photometry from UV to mid-IR.…

Cosmology and Nongalactic Astrophysics · Physics 2012-11-27 Francois Hammer , Yanbin Yang , Hector Flores , Mathieu Puech

We introduce a suite of thirty cosmological magneto-hydrodynamical zoom simulations of the formation of galaxies in isolated Milky Way mass dark haloes. These were carried out with the moving mesh code \textlcsc{AREPO}, together with a…

We present the results of several detailed numerical N-body simulations of the dynamical interactions of two equal mass disc galaxies. Both galaxies are embedded in spherical halos of dark matter and contain central bulges. Our analysis of…

Astrophysics of Galaxies · Physics 2017-02-15 R. Chan , S. Junqueira

The Local Group (LG) consists of two giant spiral galaxies, the Milky Way (MW) and Andromeda (M31), and several smaller galaxies. The MW and M31 are approaching each other at a radial velocity of about $-109\,$km\,s$^{-1}$. Observational…

Astrophysics of Galaxies · Physics 2023-06-30 Luis Biaus , Sebastián E. Nuza , Cecilia Scannapieco

Surveys of the Milky Way (MW) and M31 enable detailed studies of stellar populations across ages and metallicities, with the goal of reconstructing formation histories across cosmic time. These surveys motivate key questions for galactic…

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

We compare the star-formation history and dynamics of the Milky Way (MW) with the properties of distant disk galaxies. During the first ~4 Gyr of its evolution, the MW formed stars with a high star-formation intensity (SFI), Sigma_SFR~0.6…

Astrophysics of Galaxies · Physics 2015-06-19 Matthew D. Lehnert , Paola Di Matteo , Misha Haywood , Owain N. Snaith

Recent results from spectroscopic and astrometric surveys of nearby stars suggest that the stellar disk of our Milky Way (MW) was formed quite early, within the first few billion years of its evolution. Chemokinematic signatures of disk…

Astrophysics of Galaxies · Physics 2024-07-30 Vadim A. Semenov , Charlie Conroy , Vedant Chandra , Lars Hernquist , Dylan Nelson

[Abridged] In this first paper of this series, we present a new approach for studying the chemo-dynamical evolution in disk galaxies, which consists of fusing disk chemical evolution models with compatible numerical simulations of galactic…

Astrophysics of Galaxies · Physics 2015-06-11 I. Minchev , C. Chiappini , M. Martig

We explore galaxy properties and their link with environment and clustering using a population of ~1000 galaxies formed in a high resolution hydrodynamic simulation of the Lambda CDM cosmology. At the redshift we concentrate on, z=1, the…

Astrophysics · Physics 2015-05-13 Rupert A. C. Croft , Tiziana Di Matteo , Volker Springel , Lars Hernquist

We examine the chemical and dynamical structure in the solar neighbourhood of a model Galaxy that is the endpoint of a simulation of the chemical evolution of the Milky Way in the presence of radial mixing of stars and gas. Although the…

Astrophysics of Galaxies · Physics 2014-11-20 Ralph Schoenrich , James Binney

Understanding how the large-scale kinematics of the MW shape the formation and evolution of the interstellar medium remains challenging from an observational perspective, and numerical models that can reproduce the observed structure and…

Astrophysics of Galaxies · Physics 2026-04-29 Eva Durán-Camacho , Ana Duarte-Cabral

The Thesis is an attempt to combine data from three previously independent areas - the structure and kinematics of stellar populations of the Galaxy, photometric and dynamical models of galaxies, and models of the dynamical and physical…

Astrophysics of Galaxies · Physics 2022-03-17 Jaan Einasto

Galactic outflows driven by stellar feedback are crucial for explaining the inefficiency of star formation in galaxies. Although strong feedback can promote the formation of galactic discs by limiting star formation at early times and…

Astrophysics of Galaxies · Physics 2020-08-13 Michael Kretschmer , Oscar Agertz , Romain Teyssier

In this work, we present results on the assembly of stellar discs belonging to Milky Way-type galaxies in the Auriga simulated sample. We study the net accretion of gas onto the disc region as a function of time and radius to assess the…

Astrophysics of Galaxies · Physics 2025-04-04 Sebastián E. Nuza , Cecilia Scannapieco