Observational constraints on the origin of the elements. IX. 3D NLTE abundances of metals in the context of Galactic Chemical Evolution Models and 4MOST

Abstract

Historically, various methods have been employed to understand the origin of the elements, including observations of elemental abundances which have been compared to Galactic Chemical Evolution (GCE) models. It is also well known that 1D Local Thermodynamic Equilibrium (LTE) measurements fail to accurately capture elemental abundances. Non-LTE (NLTE) effects may play a significant role, and neglecting them leads to erroneous implications in galaxy modelling. In this paper, we calculate 3D NLTE abundances of seven key iron-peak and neutron-capture elements (Mn, Co, Ni, Sr, Y, Ba, Eu) based on carefully assembled 1D LTE literature measurements, and investigate their impact within the context of the OMEGA+ GCE model. Our findings reveal that 3D NLTE abundances are significantly higher for iron-peak elements at [Fe/H]< -3, with (for the first time ever) [Ni/Fe] and (confirming previous studies) [Co/Fe] on average reaching 0.6-0.8 dex, and [Mn/Fe] reaching -0.1 dex, which current 1D core-collapse supernova (CCSN) models cannot explain. We also observe a slightly higher production of neutron-capture elements at low metallicities, with 3D NLTE abundances of Eu being higher by +0.2 dex at [Fe/H]= -3. 3D effects are most significant for iron-peak elements in the very metal-poor regime, with average differences between 3D NLTE and 1D NLTE {reaching} up to 0.15 dex. Thus, ignoring 3D NLTE effects introduces significant biases, so including {them} should be considered whenever possible.

13 pages + 16 pages appendix, 10 figures + 17 figures appendix, accepted to MNRAS

References in corpus (48)

• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• Binary interaction dominates the evolution of massive stars
• The r-process of stellar nucleosynthesis: Astrophysics and nuclear physics achievements and mysteries
• Galactic chemical evolution: Carbon through Zinc
• The Dawes Review 2: Nucleosynthesis and stellar yields of low and intermediate-mass single stars
• Comprehensive nucleosynthesis analysis for ejecta of compact binary mergers
• Identification of strontium in the merger of two neutron stars
• Double-detonation sub-Chandrasekhar supernovae: can minimum helium shell masses detonate the core?
• Gaia-ESO Survey: The analysis of high-resolution UVES spectra of FGK-type stars
• NLTE abundances of Mn in a sample of metal-poor stars
• Non-LTE line formation of Fe in late-type stars - III. 3D non-LTE analysis of metal-poor stars
• Complete element abundances of nine stars in the r-process galaxy Reticulum II
• Systematic non-LTE study of the $-2.6\le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu
• The evolution of CNO isotopes: a new window on cosmic star-formation history and the stellar IMF in the age of ALMA
• Special Relativistic Simulations of Magnetically-dominated Jets in Collapsing Massive Stars
• Three-dimensional Models of Core-collapse Supernovae From Low-mass Progenitors With Implications for Crab
• Carbon and oxygen abundances in stellar populations
• Dynamics of shock propagation and nucleosynthesis conditions in O-Ne-Mg core supernovae
• The origin and evolution of the odd-Z iron-peak elements Sc, V, Mn, and Co in the Milky Way stellar disk
• Four-hundred Very Metal-Poor Stars Studied with LAMOST and Subaru. II. Elemental abundances
• The $R$-Process Alliance: Fourth Data Release from the Search for $r$-Process-Enhanced Stars in the Galactic Halo
• Neutron Star Mergers as the Origin of r-Process Elements in the Galactic Halo Based on the Sub-halo Clustering Scenario
• The brightness of the Red Giant Branch tip: Theoretical framework, a set of reference models, and predicted observables
• Explaining the Ba, Y, Sr, and Eu abundance scatter in metal-poor halo stars: constraints to the r-process
• Solar oxygen abundance
• Nucleosynthesis in a Primordial Supernova: Carbon and Oxygen Abundances in SMSS J031300.36-670839.31
• 3D NLTE analysis of the most iron-deficient star, SMSS0313-6708
• On the fate of the secondary white dwarf in double-degenerate double-detonation Type Ia supernovae
• Magnetorotational supernovae: A nucleosynthetic analysis of sophisticated 3D models
• Observational constraints on the origin of the elements II. 3D non-LTE formation of Ba ii lines in the solar atmosphere
• Non-LTE Radiative Transfer with Turbospectrum
• 3D non-LTE iron abundances in FG-type dwarfs
• The effects of different Type Ia SN yields on Milky Way chemical evolution
• Nucleosynthesis of binary-stripped stars
• Observational constraints on the origin of the elements. VII. NLTE analysis of Y II lines in spectra of cool stars and implications for Y as a Galactic chemical clock
• Evidence for sub-Chandrasekhar Type Ia supernovae from the last major merger
• The cosmic carbon footprint of massive stars stripped in binary systems
• Observational constraints on the origin of the elements. V. Non-LTE abundance ratios of [Ni/Fe] in Galactic stars and enrichment by sub-Chandrasekhar mass SNe
• Solar oxygen abundance using SST/CRISP center-to-limb observations of the O I 7772 Å line
• NLTE analysis of the methylidyne radical (CH) molecular lines in metal-poor stellar atmospheres
• 3D NLTE modelling of Y and Eu. Centre-to-limb variation and solar abundances
• The most metal-rich asymptotic giant branch stars
• Type Ia supernova explosion models are inherently multidimensional
• 4MOST Consortium Survey 4: Milky Way Disc and Bulge High-Resolution Survey (4MIDABLE-HR)
• Observational constraints on the origin of the elements. VI. Origin and evolution of neutron-capture elements as probed by the Gaia-ESO survey
• Heterogeneous evolution of the galaxy and the origin of the short-lived nuclides in the early solar system
• NLTE abundances of Eu for a sample of metal-poor stars in the Galactic Halo and Metal-poor Disk with 1D and <3D> models
• The Implications of Ultra-Faint Dwarf Galaxy Reticulum II on the Common Envelope Jets Supernova r-process Scenario

Cited by in corpus (5)

• Stellar Population Astrophysics (SPA) with the TNG: NLTE atmospheric parameters and abundances of giant stars in 33 Open Clusters
• Binary stellar evolution yields in galactic chemical evolution calculations
• M3DIS -- A grid of 3D radiation-hydrodynamics stellar atmosphere models for stellar surveys. II. Carbon-enhanced metal-poor stars
• A second-generation star in a relic dwarf galaxy
• Observational constraints on the origin of the elements. X. Combining NLTE and machine learning for chemical diagnostics of 4 million stars in the 4MIDABLE-HR survey