Opendata, web and dolomites


Tomography of the Milky waY

Total Cost €


EC-Contrib. €






 TOMMY project word cloud

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

formed    motions    3d    data    leaders    thereby    profile    centre    global    infrared    obscured    millions    velocities    measuring    collaborations    inner    astronomers    structure    written    researcher    decompose    poised    lie    satellite    spiral    giants    er    regions    stone    positions    community    plane    harvest    almost    red    65    accurately    mass    combining    tomographically    investment    huge    15    2018    rosetta    view    bar    era    chemical    lasting    clump    candles    fundamental    near    gaia    proper    host    infer    techniques    place    dusty    understand    5kpc    utilising    dark    disk    galactic    rcgs    shed    leaps    release    rewards    group    dynamics    map    star    esa    arms    surveys    horizon    template    shape    stellar    maps    standard    synergies    galaxy    light    stars    milky    front    ground    forefront    billion    home    galaxies    works    abundances    form    science    lies    promise    astronomical   

Project "TOMMY" data sheet

The following table provides information about the project.


Organization address
address: RUE MICHEL ANGE 3
city: PARIS
postcode: 75794

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 France [FR]
 Total cost 173˙076 €
 EC max contribution 173˙076 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2017
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2018
 Duration (year-month-day) from 2018-10-01   to  2020-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

We are poised to make huge leaps in our understanding of the Milky Way. In 2018 ESA's Gaia satellite will release measurements of the positions and velocities of almost a billion stars. In millions of those, astronomers on the ground are accurately measuring the abundances of ~15 elements. These detailed star-by-star measurements are possible only in our Galaxy, and promise to make the Milky Way a Rosetta Stone for understanding in detail the fundamental processes that shape and form all galaxies.

However a global understanding of the Milky Way will remain a challenge: Gaia's horizon lies in front of the Galactic centre, and its view is obscured in the dusty Galactic plane where most of the stellar mass lies. 65% of the Galaxy's stars lie within 5kpc of the Galactic centre, so we cannot use the Milky Way as a template without understanding the Inner Galaxy. We will use novel techniques to shed light on these important inner regions. Utilising Red Clump Giants (RCGs) as standard candles we will tomographically decompose the Galaxy: 1) By combining Gaia data with near-infrared proper motions, we will identify RCGs in the inner Galaxy, and use them to map the stellar mass in the inner disk and spiral arms. 2) We will measure the abundances of RCGs towards the bar and so make 3D chemical maps of the inner Galaxy to understand how the bar formed, and how it is related to the inner disk. 3) Combining Gaia proper motions with RCGs in the inner Galaxy we will measure the Galactic potential, and thereby infer the inner dark matter profile.

The Host Group are leaders in Milky Way surveys, and the Experienced Researcher (ER) has written important works in Galactic structure and dynamics. These synergies will result in long-lasting collaborations, and help the European astronomical community harvest the rewards from its investment in Galactic science. In an era where we will finally understand our home galaxy, the research in this proposal will place the ER at the forefront.

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

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