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The metal-poor end of the Spite plateau. II. Detailed chemical investigation

Abstract : Context. The study of old, metal-poor stars deepens our knowledge on the early stages of the universe. In particular, the study of these stars gives us a valuable insight into the masses of the first massive stars and their emission of ionising photons. Aims. We present a detailed chemical analysis and determination of the kinematic and orbital properties of a sample of 11 dwarf stars. These are metal-poor stars, and a few of them present a low lithium content. We inspected whether the other elements also present anomalies. Methods. We analysed the high-resolution UVES spectra of a few metal-poor stars using the Turbospectrum code to synthesise spectral lines profiles. This allowed us to derive a detailed chemical analysis of Fe,
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https://hal-obspm.ccsd.cnrs.fr/obspm-03359675
Contributor : Elisabetta Caffau Connect in order to contact the contributor
Submitted on : Thursday, September 30, 2021 - 2:36:21 PM
Last modification on : Friday, October 8, 2021 - 4:28:15 PM

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A. Matas Pinto, M. Spite, E. Caffau, P. Bonifacio, L. Sbordone, et al.. The metal-poor end of the Spite plateau. II. Detailed chemical investigation. Astronomy and Astrophysics - A&A, EDP Sciences, In press, ⟨10.1051/0004-6361/202141288⟩. ⟨obspm-03359675⟩

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