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NEFERTITI SIGNED

NEar FiEld cosmology: Re-Tracing Invisible TImes

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EC-Contrib. €

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Project "NEFERTITI" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITA DEGLI STUDI DI FIRENZE 

Organization address
address: Piazza San Marco 4
city: Florence
postcode: 50121
website: http://www.unifi.it

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 Italy [IT]
 Total cost 1˙180˙813 €
 EC max contribution 1˙180˙813 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2018-STG
 Funding Scheme ERC-STG
 Starting year 2019
 Duration (year-month-day) from 2019-05-01   to  2024-04-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITA DEGLI STUDI DI FIRENZE IT (Florence) coordinator 1˙180˙813.00

Map

 Project objective

The goal of NEFERTITI is to make a major step forward in our understanding of the first stars and galaxies by catching the stellar fossils from the early Universe in our Galactic neighborhood. To move beyond the state-of-the-art and study many of these precious fossils, I will adopt a novel approach that integrates theoretical and observational research and that will allow me to fully exploit: i) the huge data-flow from upcoming stellar surveys, ii) my cosmological models, which uniquely link Local data and early cosmic star-formation.

The first stars profoundly influenced the primordial Universe, affecting subsequent stellar generations and the build-up of the first galaxies. In spite of extraordinary progress in theoretical modeling and observational techniques little is known about their properties, not even their typical mass. A direct exploration of their formation epochs is a tremendous challenge. Even JWST will not see the faint dwarf galaxies where the first stars formed more than 13 billion years ago.

In the Local Group, the living relics of the first stars can be directly observed and used to re-trace the chemical evolution and star-formation of the gas during those “invisible” times. Yet, these early Universe survivors are very rare and difficult to catch. In the present era of wide and deep Local surveys, such as DES, Gaia-ESO, and WEAVE, the total number of stars observed is dramatically increasing. Combining semi-numerical models with radiative transfer codes, I will fully exploit these novel data flow to catch the local stellar fossils and to:

1) constrain the mass distribution of the first stars, 2) uncover the physical processes driving the build-up of the first galaxies.

NEFERTITI will link Near and Far-field cosmology, give new insights into the formation of the Local Group, guide the interpretation of data from future surveys, and pave the way for the exploitation of new generation spectrographs on the E-ELT (MOSAIC, HIRES).

 Publications

year authors and title journal last update
List of publications.
2019 S Salvadori, P Bonifacio, E Caffau, S Korotin, S Andreevsky, M Spite, Á Skúladóttir
Probing the existence of very massive first stars
published pages: 4261-4284, ISSN: 0035-8711, DOI: 10.1093/mnras/stz1464
Monthly Notices of the Royal Astronomical Society 487/3 2020-03-05
2020 Á. Skúladóttir, S. Salvadori
Evidence for ≳4 Gyr timescales of neutron star mergers from Galactic archaeology
published pages: L2, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201937293
Astronomy & Astrophysics 634 2020-03-05
2020 Á. Skúladóttir, C. J. Hansen, A. Choplin, S. Salvadori, M. Hampel, S. W. Campbell
Neutron-capture elements in dwarf galaxies
published pages: A84, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201937075
Astronomy & Astrophysics 634 2020-03-05
2019 Á. Skúladóttir, C. J. Hansen, S. Salvadori, A. Choplin
Neutron-capture elements in dwarf galaxies
published pages: A171, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201936125
Astronomy & Astrophysics 631 2020-03-05

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