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Stellar Parameters, Chemical composition and Models of chemical evolution

  • T. Mishenina (a1), M. Pignatari (a2) (a3) (a4), B. Côté (a3) (a5) (a6) (a4), F.-K. Thielemann (a7), C. Soubiran (a8), N. Basak (a1), T. Gorbaneva (a1), S. A. Korotin (a1) (a9), V. V. Kovtyukh (a1), B. Wehmeyer (a7), S. Bisterzo (a3) (a10) (a11), C. Travaglio (a3) (a10) (a11), B. K. Gibson (a2) (a4), C. Jordan (a2) (a4), A. Paul (a5), C. Ritter (a3) (a4) and F. Herwig (a3) (a4)...

Abstract

We present an in-depth study of metal-poor stars, based high resolution spectra combined with newly released astrometric data from Gaia, with special attention to observational uncertainties. The results are compared to those of other studies, including Gaia benchmark stars. Chemical evolution models are discussed, highlighting few puzzles that are still affecting our understanding of stellar nucleosynthesis and of the evolution of our Galaxy.

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Bisterzo, S., Travaglio, C., Gallino, R., Wiescher, M. & Käppeler, F., 2014, ApJ, 787, 10
Côté, B., West, C., Heger, A. et al., 2016, MNRAS, 463, 3755
Hughes, G. L., Gibson, B. K., Carigi, L. et al., 2008, MNRAS, 390, 1710
Mishenina, T., Pignatari, M., Côté, B. et al. 2017, eprint arXiv:1705.03642
Wehmeyer, B., Pignatari, M. & Thielemann, F.-K., 2015, MNRAS, 452, 1970
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