On the solar nickel and oxygen abundances

Abstract

Determinations of the solar oxygen content relying on the neutral forbidden transition at 630 nm depend upon the nickel abundance, due to a Ni I blend. Here we rederive the solar nickel abundance, using the same ab initio 3D hydrodynamic model of the solar photosphere employed in the recent revision of the abundances of C, N, O and other elements. Using 17 weak, unblended lines of Ni I together with the most accurate atomic and observational data available we find log epsilon_Ni = 6.17 +/- 0.02 (statistical) +/- 0.05 (systematic), a downwards shift of 0.06 to 0.08 dex relative to previous 1D-based abundances. We investigate the implications of the new nickel abundance for studies of the solar oxygen abundance based on the [O I] 630 nm line in the quiet Sun. Furthermore, we demonstrate that the oxygen abundance implied by the recent sunspot spectropolarimetric study of Centeno & Socas-Navarro needs to be revised downwards from log epsilon_O = 8.86 +/- 0.07 to 8.71 +/- 0.10. This revision is based on the new nickel abundance, application of the best available gf-value for the 630 nm forbidden oxygen line, and a more transparent treatment of CO formation. Determinations of the solar oxygen content relying on forbidden lines now appear to converge around log epsilon_O = 8.7.

v2 matches published version

References in corpus (11)

• The 'Forbidden' Abundance of Oxygen in the Sun
• The Chemical Compositions of Galactic Disk F and G Dwarfs
• Line formation in solar granulation: IV. [O I], OI and OH lines and the photospheric O abundance
• Helioseismology and Solar Abundances
• The photospheric solar oxygen project: I. Abundance analysis of atomic lines and influence of atmospheric models
• Experimental f-value and isotopic structure for the Ni I line blended with [OI] at 6300A
• Solar Carbon Monoxide, Thermal Profiling, and the Abundances of C, O, and their Isotopes
• Center-to-Limb Variation of Solar 3-D Hydrodynamical Simulations
• Line formation in solar granulation VII. CO lines and the solar C and O isotopic abundances
• Another forbidden solar oxygen abundance: the [O I] 5577 A line
• A new approach to the solar oxygen abundance problem

Cited by in corpus (43)

• The chemical composition of the Sun
• The Abundances of Neutron Capture Species in the Very Metal-Poor Globular Cluster M15: An Uniform Analysis of RGB and RHB Stars
• The elemental composition of the Sun II. The iron group elements Sc to Ni
• High-precision abundances of elements in solar twin stars: Trends with stellar age and elemental condensation temperature
• Scaled solar tracks and isochrones in a large region of the Z-Y plane. II. From 2.5 to 20 solar masses
• Line lists for the A2PI-X2Sigma+ (red) and {B2Sigma+-X2Sigma} (violet) Systems of CN, 13C14N, and 12C15N, and Application to Astronomical Spectra
• Carbon and oxygen abundances in stellar populations
• PPAK Wide-field Integral Field Spectroscopy of NGC 628: II. Emission line abundance analysis
• PPAK Wide-field Integral Field Spectroscopy of NGC 628: I. The largest spectroscopic mosaic on a single galaxy
• Carbon and Oxygen in Nearby Stars: Keys to Protoplanetary Disk Chemistry
• Oxygen lines in solar granulation. II. Centre-to-limb variation, NLTE line formation, blends and the solar oxygen abundance
• The Evolution of Carbon and Oxygen in the Bulge and Disk of the Milky Way
• Abundances of lithium, oxygen, and sodium in the turn-off stars of Galactic globular cluster 47 Tuc
• Ultraviolet Detection of the Binary Companion to the Type IIb SN 2001ig
• Oxygen abundance distribution in Galactic disc
• Evaporation and scattering of momentum- and velocity-dependent dark matter in the Sun
• The Leoncino Dwarf Galaxy: Exploring the Low-Metallicity End of the Luminosity-Metallicity and Mass-Metallcity Relations
• Metal Abundances in the Cool-Cores of Galaxy Clusters
• A VLT VIMOS integral field spectroscopic study of perturbed blue compact galaxies: UM 420 and UM 462
• A High-Resolution Three-Dimensional Model of the Solar Photosphere Derived from Hinode Observations
• Thermal conduction by dark matter with velocity and momentum-dependent cross-sections
• The merging dwarf galaxy UM 448: chemodynamics of the ionized gas from VLT integral field spectroscopy
• Generalised form factor dark matter in the Sun
• Cosmic nucleosynthesis: a multi-messenger challenge
• The photospheric solar oxygen project: III. Investigation of the centre-to-limb variation of the 630nm [OI]-NiI blend
• Effect of electromagnetic dipole dark matter on energy transport in the solar interior
• Oxygen Metallicity Determinations from Optical Emission Lines in Early-type Galaxies
• Continuum intensity and [O I] spectral line profiles in solar 3D photospheric models: the effect of magnetic fields
• Updated constraints on velocity and momentum-dependent asymmetric dark matter
• Temperature Structure and Metallicity in H II Regions
• Monte Carlo simulations of the Nickel K$\alpha$ fluorescent emission line in a toroidal geometry
• The Solar Heavy Element Abundances: II. Constraints from Stellar Atmospheres
• Intensity enhancement of O VI ultraviolet emission lines in solar spectra due to opacity
• The Solar Oxygen Abundance from an Empirical Three-Dimensional Model
• Light bosons and photospheric solutions to the solar abundance problem
• Simulation of energy transport by dark matter scattering in stars
• Carbon-to-Oxygen Ratios in M dwarfs and Solar-type stars
• The Light Element Abundance Distribution in NGC 5128 from Planetary Nebulae
• Spatially resolved measurements of the solar photospheric oxygen abundance
• Uncertainties in the solar photospheric oxygen abundance
• Spatially resolved properties of the grand-design spiral galaxy UGC 9837: a case for high-redshift 2D observations
• The Chemical Composition of the Solar Surface
• The solar carbon, nitrogen, and oxygen abundances from a 3D LTE analysis of molecular lines