Tamara Mishenina
Mn abundances in the stars of the Galactic disc with metallicities -1.0 < [Fe/H] < 0.3
Mishenina, Tamara; Gorbaneva, Tatyana Ivanovna; Pignatari, M.; Thielemann, Friedrich-Karl; Korotin, Sergey
Authors
Tatyana Ivanovna Gorbaneva
M. Pignatari
Friedrich-Karl Thielemann
Sergey Korotin
Abstract
In this work we present and discuss the observations of the Mn abundances for 247 FGK dwarfs, located in the Galactic disc with metallicity -1 < [Fe/H]< +0.3. The observed stars belong to the substructures of the Galaxy thick and thin discs, and to the Hercules stream. The observations were conducted using the 1.93 m telescope at Observatoire de Haute-Provence (OHP, France) equipped with the echelle type spectrographs ELODIE and SOPHIE. The abundances were derived under the LTE approximation, with an average error for the [Mn/Fe] ratio of 0.10 dex. For most of the stars in the sample Mn abundances are not available in the literature. We obtain an evolution of [Mn/Fe] ratio with the metallicity [Fe/H] consistent with previous data compilations. In particular, within the metallicity range covered by our stellar sample the [Mn/Fe] ratio is increasing with the increase of metallicity. This due to the contribution to the Galactic chemical evolution of Mn and Fe from thermonuclear supernovae. We confirm the baseline scenario where most of the Mn in the Galactic disc and in the Sun is made by thermonuclear supernovae. In particular, the effective contribution from core-collapse supernovae to the Mn in the Solar system is about 10-20%. However, present uncertainties affecting the production of Mn and Fe in thermonuclear supernovae are limiting the constraining power of the observed [Mn/Fe] trend in the Galactic discs on, e.g., the frequency of different thermonuclear supernovae populations. The different production of these two elements in different types of thermonuclear supernovae needs to be disentangled by the dependence of their relative production on the metallicity of the supernova progenitor.
Citation
Mishenina, T., Gorbaneva, T. I., Pignatari, M., Thielemann, F., & Korotin, S. (2015). Mn abundances in the stars of the Galactic disc with metallicities -1.0 < [Fe/H] < 0.3. Monthly notices of the Royal Astronomical Society, 454(2), 1585-1594. https://doi.org/10.1093/mnras/stv2038
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 1, 2015 |
Online Publication Date | Oct 6, 2015 |
Publication Date | Dec 1, 2015 |
Deposit Date | Nov 10, 2015 |
Publicly Available Date | Mar 29, 2024 |
Journal | Monthly notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Oxford University Press |
Peer Reviewed | Peer Reviewed |
Volume | 454 |
Issue | 2 |
Pages | 1585-1594 |
DOI | https://doi.org/10.1093/mnras/stv2038 |
Keywords | Stars : abundances; Stars : late-type; Galaxy : disc; Galaxy : evolution |
Public URL | https://hull-repository.worktribe.com/output/381059 |
Publisher URL | http://mnras.oxfordjournals.org/content/454/2/1585.full |
Additional Information | This article has been accepted for publication in Monthly notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Files
Article
(839 Kb)
PDF
Copyright Statement
©2015 the Authors
You might also like
Progress on nuclear reaction rates affecting the stellar production of <sup>26</sup>Al
(2023)
Journal Article
Chemical evolution of fluorine in the Milky Way
(2022)
Journal Article
Horizons: nuclear astrophysics in the 2020s and beyond
(2022)
Journal Article
Isotopic ratios for C, N, Si, Al, and Ti in C-rich presolar grains from massive stars
(2022)
Journal Article
Downloadable Citations
About Repository@Hull
Administrator e-mail: repository@hull.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search