The ESO Large Programme First Stars

P. Bonifacio (1,2,3); J. Andersen (4,5); S. Andrievsky (6); B. Barbuy; (7); T. C. Beers (8); E. Caffau (2); R. Cayrel (2); E. Depagne (9); P.; Francois (2); J. I. Gonzalez Hernandez (1,2); C. J. Hansen (10); F. Herwig; (11); V. Hill (2); S. A. Korotin (6); H.-G. Ludwig (1,2); P. Molaro (3); B.; Nordstrom (4); B. Plez (12); F. Primas (10); T. Sivarani (8); F. Spite (2),; M. Spite (2) ((1) CIFIST Marie Curie Excellence Team; (2) GEPI; Observatoire; de Paris; CNRS; Universite' Paris Diderot; (3) Istituto Nazionale di; Astrofisica; Osservatorio Astronomico di Trieste; (4) The Niels Bohr; Institute; Astronomy; (5) Nordic Optical Telescope; (6) Department of; Astronomy; Astronomical Observatory; Odessa National University; (7); Universidade de Sao Paulo; Departamento de Astronomia; (8) Department of; Physics & Astronomy; JINA: Joint Institute for Nuclear Astrophysics,; Michigan State University; (9) Las Cumbres Observatory; Santa Barbara; (10); European Southern Observatory (ESO); (11) Keele Astrophysics Group; School of; Physical; Geographical Sciences; Keele University; (12) GRAAL,; Universit\'e de Montpellier II)

arXiv:0801.1293·astro-ph·November 13, 2009

The ESO Large Programme First Stars

P. Bonifacio (1,2,3), J. Andersen (4,5), S. Andrievsky (6), B. Barbuy, (7), T. C. Beers (8), E. Caffau (2), R. Cayrel (2), E. Depagne (9), P., Francois (2), J. I. Gonzalez Hernandez (1,2), C. J. Hansen (10), F. Herwig, (11), V. Hill (2), S. A. Korotin (6), H.-G. Ludwig (1,2)

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TL;DR

This paper discusses the ESO Large Programme that used UVES at the VLT to obtain high-resolution spectra of extremely metal-poor stars, aiming to understand the properties of the first stars in the universe.

Contribution

It presents the main results from a large observational campaign targeting extremely metal-poor stars to study the early universe's stellar populations.

Findings

01

High-resolution spectra of EMP stars obtained

02

Insights into the chemical composition of the first stars

03

Advancement in understanding early stellar evolution

Abstract

In ESO period 65 (April-September 2000) the large programme 165.N-0276, led by Roger Cayrel, began making use of UVES at the Kueyen VLT telescope. Known within the Team and outside as ``First Stars'', it was aimed at obtaining high resolution, high signal-to-noise ratio spectra in the range 320 nm -- 1000 nm for a large sample of extremely metal-poor (EMP) stars identified from the HK objective prism survey.In this contribution we highlight the main results of the large programme.

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