The solar silicon abundance based on 3D non-LTE calculations

Abstract

We present three-dimensional (3D) non-local thermodynamic equilibrium (non-LTE) radiative transfer calculations for silicon in the solar photosphere, using an extensive model atom that includes recent, realistic neutral hydrogen collisional cross-sections. We find that photon losses in the SiI lines give rise to slightly negative non-LTE abundance corrections of the order -0.01 dex. We infer a 3D non-LTE based solar silicon abundance of 7.51 dex. With silicon commonly chosen to be the anchor between the photospheric and meteoritic abundances, we find that the meteoritic abundance scale remains unchanged compared with the Asplund et al. (2009) and Lodders et al. (2009) results.

arXiv comment11 pages, 7 figures, 2 tables; Accepted for publication in MNRAS

References in corpus (25)

• The chemical composition of the Sun
• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• Abundances of the elements in the solar system
• New Solar Composition: The Problem With Solar Models Revisited
• The Most Metal-Poor Stars. II. Chemical Abundances of 190 Metal-Poor Stars Including 10 New Stars With [Fe/H] < -3.5
• The elemental composition of the Sun II. The iron group elements Sc to Ni
• The Stagger-grid: A Grid of 3D Stellar Atmosphere Models - I. Methods and General Properties
• The elemental composition of the Sun I. The intermediate mass elements Na to Ca
• The elemental composition of the Sun III. The heavy elements Cu to Th
• Non-LTE line formation of Fe in late-type stars - III. 3D non-LTE analysis of metal-poor stars
• Non-LTE oxygen line formation in 3D hydrodynamic model stellar atmospheres
• Red Supergiant Stars as Cosmic Abundance Probes: II. NLTE Effects in J-band Silicon Lines
• Accurate abundance analysis of late-type stars: advances in atomic physics
• The EMBLA Survey -- Metal-poor stars in the Galactic bulge
• How realistic are solar model atmospheres?
• Sulphur abundances in disk stars: a correlation with silicon
• Why one-dimensional models fail in the diagnosis of average spectra from inhomogeneous stellar atmospheres
• A New Type of Extremely Metal Poor Star
• Alive and well: a short review about standard solar models
• Statistical equilibrium of silicon in the solar atmosphere
• Oxygen lines in solar granulation. I. Testing 3D models against new observations with high spatial and spectral resolution
• Statistical equilibrium of silicon in the atmospheres of metal-poor stars
• The StaggerGrid Project: a Grid of 3D Model Atmospheres for High-Precision Spectroscopy
• Influence of Inelastic Collisions with Hydrogen Atoms on the Formation of Al I and Si I Lines in Stellar Spectra
• A non-LTE study of silicon abundances in giant stars from the Si I infrared lines in the zJ-band

Cited by in corpus (54)

• The chemical make-up of the Sun: A 2020 vision
• The GALAH+ Survey: Third Data Release
• The GALAH Survey: Second Data Release
• Observational constraints on the origin of the elements. IV: The standard composition of the Sun
• Accuracy and precision of industrial stellar abundances
• Carbon, oxygen, and iron abundances in disk and halo stars. Implications of 3D non-LTE spectral line formation
• Observational constraints on the origin of the elements. I. 3D NLTE formation of Mn lines in late-type stars
• Non-LTE aluminium abundances in late-type stars
• Non-local thermodynamic equilibrium stellar spectroscopy with 1D and <3D> models - I. Methods and application to magnesium abundances in standard stars
• High-precision stellar abundances of the elements - methods and applications
• A non-interacting Galactic black hole candidate in a binary system with a main-sequence star
• The GALAH Survey: Non-LTE departure coefficients for large spectroscopic surveys
• 3D NLTE spectral line formation of lithium in late-type stars
• Influence of sub- and super-solar metallicities on the compositions of solid planetary building blocks
• Chemical Abundances of Main-Sequence, Turnoff, Subgiant and red giant Stars from APOGEE spectra II: Atomic Diffusion in M67 Stars
• Non-LTE line formation of Fe in late-type stars IV: Modelling of the solar centre-to-limb variation in 3D
• Effective temperature determinations of late-type stars based on 3D non-LTE Balmer line formation
• Inelastic O+H collisions and the OI 777nm solar centre-to-limb variation
• High-precision abundances of elements in Kepler LEGACY stars. Verification of trends with stellar age
• Observational constraints on the origin of the elements II. 3D non-LTE formation of Ba ii lines in the solar atmosphere
• Zero-metallicity hypernova uncovered by an ultra metal-poor star in the Sculptor dwarf spheroidal galaxy
• The GALAH Survey: Verifying abundance trends in the open cluster M67 using non-LTE spectroscopy
• 3D non-LTE line formation of neutral carbon in the Sun
• Measuring 14 elemental abundances with R=1,800 LAMOST spectra
• The Volatility Trend of Protosolar and Terrestrial Elemental Abundances
• 3D non-LTE iron abundances in FG-type dwarfs
• PySME -- Spectroscopy Made Easier
• Evidence that the Hot Jupiter WASP-77 A b Formed Beyond Its Parent Protoplanetary Disk's H2O Ice Line
• Detailed abundances in the Galactic center: Evidence of a metal-rich alpha-enhanced stellar population
• The Most Metal-poor Stars in the Magellanic Clouds are $r$-process Enhanced
• Detailed chemical compositions of the wide binary HD 80606/80607: revised stellar properties and constraints on planet formation
• Non-LTE line formation for Si I-II-III in A-B stars and the origin of Si II emission lines in iota Her
• The 3D non-LTE solar nitrogen abundance from atomic lines
• The deep composition of Uranus and Neptune from in situ exploration and thermochemical modeling
• The Most Metal-poor Stars in the Inner Bulge
• HERBS I: Metallicity and alpha enhancement along the Galactic bulge minor axis
• On the Optimal Choice of Nucleosynthetic Yields, IMF and Number of SNe Ia for Chemical Evolution Modelling
• 1D non-LTE corrections for chemical abundance analyses of very metal-poor stars
• Raising the observed metallicity floor with a 3D non-LTE analysis of SDSS J102915.14+172927.9
• Testing abundance-age relations beyond solar analogues with Kepler LEGACY stars
• An extended and refined grid of 3D STAGGER model atmospheres. Processed snapshots for stellar spectroscopy
• Atomic Transition Probabilities for Transitions of Si I and Si II and the Silicon Abundances of Several Very Metal-Poor Stars
• The GALAH Survey: Using Galactic Archaeology to Refine our Knowledge of TESS Target Stars
• Variability of the adiabatic parameter in monoatomic thermal and non-thermal plasmas
• Modeling stellar abundance patterns resulting from the addition of earthlike planetary material
• The solar photospheric silicon abundance according to CO5BOLD: Investigating line broadening, magnetic fields, and model effects
• The peculiar composition of the Sun is not related to giant planets
• The GALAH survey: Improving chemical abundances using star clusters
• The solar sulphur abundance in view of large-scale atomic structure calculations and 3D non-LTE models
• 3D non-LTE Ca II line formation in metal-poor FGK stars. I. Abundance corrections, radial velocity corrections, and synthetic spectra
• Chemical analysis of the Milky Way's Nuclear Star Cluster: Evidence for a metallicity gradient
• NLTE Analysis of High Resolution H-band Spectra. I. Neutral Silicon
• The COMBS Survey -- III. The Chemodynamical Origins of Metal-Poor Bulge Stars
• Supergiant GCIRS 22 in the Milky Way Nuclear Star Cluster: Revised alpha abundances