Marco Pignatari
The chemical evolution of the solar neighbourhood for planet-hosting stars
Pignatari, Marco; Trueman, Thomas C.L.; Womack, Kate A.; Gibson, Brad K.; Côte, Benoit; Turrini, Diego; Sneden, Christopher; Mojzsis, Stephen J.; Stancliffe, Richard J.; Fong, Paul; Lawson, Thomas V.; Keegans, James D.; Pilkington, Kate; Passy, Jean Claude; Beers, Timothy C.; Lugaro, Maria
Authors
Thomas C.L. Trueman
Kate A. Womack
Brad K. Gibson
Benoit Côte
Diego Turrini
Christopher Sneden
Stephen J. Mojzsis
Richard J. Stancliffe
Paul Fong
Mr Thomas Lawson T.V.Lawson@hull.ac.uk
Teaching Fellow
James D. Keegans
Kate Pilkington
Jean Claude Passy
Timothy C. Beers
Maria Lugaro
Abstract
Theoretical physical-chemical models for the formation of planetary systems depend on data quality for the Sun's composition, that of stars in the solar neighbourhood, and of the estimated 'pristine' compositions for stellar systems. The effective scatter and the observational uncertainties of elements within a few hundred parsecs from the Sun, even for the most abundant metals like carbon, oxygen and silicon, are still controversial. Here we analyse the stellar production and the chemical evolution of key elements that underpin the formation of rocky (C, O, Mg, Si) and gas/ice giant planets (C, N, O, S). We calculate 198 galactic chemical evolution (GCE) models of the solar neighbourhood to analyse the impact of different sets of stellar yields, of the upper mass limit for massive stars contributing to GCE (Mup) and of supernovae from massive-star progenitors which do not eject the bulk of the iron-peak elements (faint supernovae). Even considering the GCE variation produced via different sets of stellar yields, the observed dispersion of elements reported for stars in the Milky Way (MW) disc is not reproduced. Among others, the observed range of super-solar [Mg/Si] ratios, sub-solar [S/N], and the dispersion of up to 0.5 dex for [S/Si] challenge our models. The impact of varying Mup depends on the adopted supernova yields. Thus, observations do not provide a constraint on the Mup parametrization. When including the impact of faint supernova models in GCE calculations, elemental ratios vary by up to 0.1-0.2 dex in the MW disc; this modification better reproduces observations.
Citation
Pignatari, M., Trueman, T. C., Womack, K. A., Gibson, B. K., Côte, B., Turrini, D., …Lugaro, M. (2023). The chemical evolution of the solar neighbourhood for planet-hosting stars. Monthly notices of the Royal Astronomical Society, 524(4), 6295-6330. https://doi.org/10.1093/mnras/stad2167
Journal Article Type | Article |
---|---|
Acceptance Date | Jul 14, 2023 |
Online Publication Date | Jul 21, 2023 |
Publication Date | Oct 1, 2023 |
Deposit Date | May 2, 2024 |
Publicly Available Date | May 3, 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 | 524 |
Issue | 4 |
Pages | 6295-6330 |
DOI | https://doi.org/10.1093/mnras/stad2167 |
Keywords | Stars: abundances; Planetary systems; Solar neighbourhood; Galaxy: abundances; Galaxy: disc; Galaxy: evolution |
Public URL | https://hull-repository.worktribe.com/output/4377946 |
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Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.
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