Mn abundances in the stars of the Galactic disc with metallicities -1.0 < [Fe/H] < 0.3

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.

17 pages, 5 figures, revised version, accepted for publication in MNRAS

References in corpus (14)

• Double-detonation sub-Chandrasekhar supernovae: can minimum helium shell masses detonate the core?
• Three-Dimensional Simulations of Core-Collapse Supernovae: From Shock Revival to Shock Breakout
• NLTE abundances of Mn in a sample of metal-poor stars
• Using chemical tagging to redefine the interface of the Galactic disk and halo
• A Chandrasekhar Mass Progenitor for the Type Ia Supernova Remnant 3C 397 from The Enhanced Abundances of Nickel and Manganese
• The origin and evolution of the odd-Z iron-peak elements Sc, V, Mn, and Co in the Milky Way stellar disk
• The chemical evolution of Manganese in different stellar systems
• Manganese Abundances in Cluster and Field Stars
• Metallicity as a source of dispersion in the SNIa bolometric light curve luminosity-width relationship
• Manganese trends in a sample of thin and thick disk stars. The origin of Mn
• Constraints on explosive silicon burning in core-collapse supernovae from measured Ni/Fe ratios
• Formation of MnI lines in the solar atmosphere
• Initiation of the detonation in the gravitationally confined detonation model of Type Ia supernovae
• Massive Stars and their Supernovae

Cited by in corpus (26)

• Observational constraints on the origin of the elements. I. 3D NLTE formation of Mn lines in late-type stars
• Explosive Nucleosynthesis in Near-Chandrasekhar Mass White Dwarf Models for Type Ia Supernovae: Dependence on Model Parameters
• The GALAH Survey: Non-LTE departure coefficients for large spectroscopic surveys
• Evolution of the dust-to-metals ratio in high-redshift galaxies probed by GRB-DLAs
• High-precision abundances of Sc, Mn, Cu, and Ba in solar twins. Trends of element ratios with stellar age
• Dust-depletion sequences in damped Lyman-α absorbers: a unified picture from low-metallicity systems to the Galaxy
• Bayesian analysis of interiors of HD 219134b, Kepler-10b, Kepler-93b, CoRoT-7b, 55 Cnc e, and HD 97658b using stellar abundance proxies
• A Comparison of Stellar Elemental Abundance Techniques and Measurements
• The Chemical Composition of the Galactic Bulge and Implications for its Evolution
• The AMBRE project: Iron-peak elements in the solar neighbourhood
• Observational constraints on the origin of the elements. III. Evidence for the dominant role of sub-Chandrasekhar SN Ia in the chemical evolution of Mn and Fe in the Galaxy
• Detailed Chemical Abundances for a Benchmark Sample of M Dwarfs from the APOGEE Survey
• Dust depletion of metals from local to distant galaxies I: Peculiar nucleosynthesis effects and grain growth in the ISM
• Behaviour of elements from lithium to europium in stars with and without planets
• Observing the metal-poor solar neighbourhood: a comparison of galactic chemical evolution predictions
• Secondary atmospheres on HD 219134 b and c
• Early chemical evolution of Zn driven by magnetorotational supernovae and the pathway to the solar Zn composition
• A study of the blue straggler population of the old open cluster Collinder 261
• Enrichment of the Galactic disc with neutron-capture elements: Mo and Ru
• A high-precision abundance analysis of the nuclear benchmark star HD 20
• The blue straggler population of the open clusters Trumpler 5, Trumpler 20, and NGC 2477
• Type Ia Supernova Nucleosynthesis: Metallicity-Dependent Yields
• Spectroscopy of Dwarf Stars Around the North Celestial Pole
• Chemical composition of stars with massive planets
• Explosive Nucleosynthesis: What we learned and what we still do not understand
• High-resolution spectroscopic study of dwarf stars in the northern sky: Na to Zn abundances in two fields with radii of 20 degrees