MINCE

Context . The Measuring at Intermediate Metallicity Neutron-Capture Elements (MINCE) project aims to provide high-quality neutron-capture abundances measurements for several hundred stars at an intermediate metallicity of −2.5 < [Fe/H] < −1.5. This project will shed light on the origin of the neutron-capture elements and the chemical enrichment of the Milky Way. Aims . The goal of this work is to chemically characterize the second sample of the MINCE project and compare the abundances with the galactic chemical evolution model at our disposal. Methods . We performed a standard abundance analysis based on one-dimensional (1D) local thermodynamic equilibrium (LTE) model atmospheres based on high-resolution and high-signal-to-noise-ratio (S/N) spectra from Ultraviolet and Visual Echelle Spectrograph (UVES). Results . We provide the kinematic classification (i.e., thin disk, thick disk, thin-to-thick disk, halo, Gaia Sausage Enceladus, Sequoia) of 99 stars and the atmospheric parameters for almost all stars. We derived the abundances for light elements (from Na to Zn) and neutron-capture elements (Rb, Sr, Y, Zr, Ba, La, Ce, Pr, Nd, Sm, and Eu) for a subsample of 32 stars in the metallicity range of −2.5 < [Fe/H] < −1.00. In the subsample of 32 stars, we identified eight active stars exhibiting (inverse) P-Cygni profile and one Li-rich star, CD 28-11039. We find a general agreement between the chemical abundances and the stochastic model computed for the chemical evolution of the Milky Way halo for elements Mg, Ca, Si, Ti, Sc, Mn, Co, Ni, Zn, Rb, Sr, Y, Zr, Ba, La, and Eu . Conclusions . The MINCE project has already significantly increased the number of neutron-capture elements measurements in the intermediate metallicity range. The results from this sample are in perfect agreement with the previous MINCE sample. The good agreement between the chemical abundances and the chemical evolution model of the Galaxy supports the nucleosynthetic processes adopted to describe the origin of the n-capture elements.

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Publication Details

Journal
Astronomy and Astrophysics
Published
2025-02-06
DOI
https://doi.org/10.1051/0004-6361/202452964
Citations
2
Primary Topic
Astro and Planetary Science
Type
article
Field-Weighted Citation Impact
2.31

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article

MINCE

L. Monaco, F. Lucertini, L. Sbordone, E. Caffau et al.
2 citations
Astronomy and Astrophysics
Astro and Planetary Science
2.31
article

MINCE

L. Monaco, F. Lucertini, L. Sbordone, E. Caffau, E. Spitoni, L. Magrini, A. J. Korn, A. Kučinskas, C. J. Hansen, P. Bonifacio, R. Lallement, M. Franchini, Linda Lombardo, G. Cescutti, A. Mucciarelli, P. François, Raphaela Fernandes de Melo
article en
2 citations

Abstract

Context . The Measuring at Intermediate Metallicity Neutron-Capture Elements (MINCE) project aims to provide high-quality neutron-capture abundances measurements for several hundred stars at an intermediate metallicity of −2.5 < [Fe/H] < −1.5. This project will shed light on the origin of the neutron-capture elements and the chemical enrichment of the Milky Way. Aims . The goal of this work is to chemically characterize the second sample of the MINCE project and compare the abundances with the galactic chemical evolution model at our disposal. Methods . We performed a standard abundance analysis based on one-dimensional (1D) local thermodynamic equilibrium (LTE) model atmospheres based on high-resolution and high-signal-to-noise-ratio (S/N) spectra from Ultraviolet and Visual Echelle Spectrograph (UVES). Results . We provide the kinematic classification (i.e., thin disk, thick disk, thin-to-thick disk, halo, Gaia Sausage Enceladus, Sequoia) of 99 stars and the atmospheric parameters for almost all stars. We derived the abundances for light elements (from Na to Zn) and neutron-capture elements (Rb, Sr, Y, Zr, Ba, La, Ce, Pr, Nd, Sm, and Eu) for a subsample of 32 stars in the metallicity range of −2.5 < [Fe/H] < −1.00. In the subsample of 32 stars, we identified eight active stars exhibiting (inverse) P-Cygni profile and one Li-rich star, CD 28-11039. We find a general agreement between the chemical abundances and the stochastic model computed for the chemical evolution of the Milky Way halo for elements Mg, Ca, Si, Ti, Sc, Mn, Co, Ni, Zn, Rb, Sr, Y, Zr, Ba, La, and Eu . Conclusions . The MINCE project has already significantly increased the number of neutron-capture elements measurements in the intermediate metallicity range. The results from this sample are in perfect agreement with the previous MINCE sample. The good agreement between the chemical abundances and the chemical evolution model of the Galaxy supports the nucleosynthetic processes adopted to describe the origin of the n-capture elements.

Astronomy and AstrophysicsVol. 695
Goethe University Frankfurt (DE), Uppsala University (SE), Centre National de la Recherche Scientifique (FR), University of Talca (CL), University of Trieste (IT), Vilnius University (LT), Université Paris Sciences et Lettres (FR), Arcetri Astrophysical Observatory (IT), Observatoire de Paris (FR), Trieste Astronomical Observatory (IT), Galaxies, Etoiles, Physique et Instrumentation (FR), European Southern Observatory (CL), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT), Osservatorio di Astrofisica e Scienza dello Spazio, Université de Picardie Jules Verne (FR), University of Bologna (IT)
European Space Agency, European Commission, Agence Nationale de la Recherche, Ministero dell'Università e della Ricerca, Comisión Nacional de Investigación Científica y Tecnológica, Agencia Estatal de Investigación
Openalex Percentile: Top 13%
Astro and Planetary Science
2.31
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