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Numerical Simulations of the Milky Way's Accretion History

Total Cost €


EC-Contrib. €






 VIA LACTEA project word cloud

Explore the words cloud of the VIA LACTEA project. It provides you a very rough idea of what is the project "VIA LACTEA" about.

coupling    hydrodynamical    gaia    age    pond    equilibrium    revealed    seeding    ripples    release    numerical    evolution    stellar    combination    population    pointing    infancy    debris    inner       isolated    dating    dwarf    structure    techniques    space    inference    single    basis    time    computing    constrained    simulations    satellites    appreciated    idealised    sagittarius    bulge    millions    collision    nearly    sausage    satellite    deep    see    milky    mass    billion    events    basic    explore    axisymmetry    enduring    complexity    axisymmetric    populations    halo    dynamical    progenitor    uncovered       data    ago    thick    body    galaxy    potentially    disc    perturbations    chemical    insights    understand    look    moving    falling    mathematical    previously    kinematics    genetically    history    gain    progress    models    event    dark    cosmological    came    stars    massive    assumptions    shown    modified    accretion    dependent   

Project "VIA LACTEA" data sheet

The following table provides information about the project.


Organization address
postcode: 14482

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Germany [DE]
 Total cost 1˙498˙750 €
 EC max contribution 1˙498˙750 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2019-STG
 Funding Scheme ERC-STG
 Starting year 2020
 Duration (year-month-day) from 2020-09-01   to  2025-08-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The second data release of the Gaia satellite has revealed much complexity in the structure and kinematics of stars in the Milky Way than previously appreciated. In the disc, Gaia has shown that our Galaxy is still enduring the effects of a collision that set millions of stars moving like ripples on a pond. In the stellar halo, the data uncovered a large single debris structure pointing to a massive accretion event 10 billion years ago, at a time when the disc was in its infancy. Our basic assumptions of dynamical equilibrium and axisymmetry at the basis of nearly all mathematical models of the Galaxy are now falling short to make further progress on our inference on the Galaxy’s formation or the distribution of dark matter. Understanding the detailed time-dependent non-axisymmetric phase-space structure of the Galaxy would open new pathways to understand its detailed accretion history, potentially dating its most major perturbations. This proposal aims to explore the deep coupling between the stellar halo and the Milky Way disc and bulge, to gain new insights on the formation history of the Milky Way through its most major accretion events through a number of state-of-the-art computing techniques. Study 1 will look into studying the formation of the inner-halo through a combination of cosmological genetically modified (constrained) simulations and idealised simulations to constrain the mass and accretion time of the Gaia-Sausage progenitor galaxy (and its potential satellite population which came with it) as well as its impact on the formation of the ``thick disc' and growth of the Galaxy past z~3-2. Study 2 will look into the impact of known satellites on the dynamical and chemical and age populations’ evolution of the Milky Way using both cosmological/isolated hydrodynamical simulations and idealised numerical N-body simulations, particularly focusing on the role of the Sagittarius dwarf in seeding the perturbations in the disc we see today.

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The information about "VIA LACTEA" are provided by the European Opendata Portal: CORDIS opendata.

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lastchecktime (2022-11-27 15:36:53) correctly updated