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Extended atomic data for oxygen abundance analyses
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- Li, W. (author)
- Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China.
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- Jönsson, P. (author)
- Malmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM),Malmö Univ, Dept Mat Sci & Appl Math, S-20506 Malmö, Sweden.
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- Amarsi, Anish (author)
- Uppsala universitet,Teoretisk astrofysik,Uppsala Univ, Dept Phys & Astron, Theoret Astrophys, Box 516, S-75120 Uppsala, Sweden.
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- Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China Institutionen för materialvetenskap och tillämpad matematik (MTM) (creator_code:org_t)
- EDP Sciences, 2023
- 2023
- English.
- In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 674
- Journal article (peer-reviewed)
Abstract
Subject headings
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- As the most abundant element in the universe after hydrogen and helium, oxygen plays a key role in planetary, stellar, and galactic astrophysics. Its abundance is especially influential in terms of stellar structure and evolution, and as the dominant opacity contributor at the base of the Sun's convection zone, it is central to the discussion on the solar modelling problem. However, abundance analyses require complete and reliable sets of atomic data. We present extensive atomic data for O I by using the multiconfiguration Dirac-Hartree-Fock and relativistic configuration interaction methods. We provide the lifetimes and transition probabilities for radiative electric dipole transitions and we compare them with results from previous calculations and available measurements. The accuracy of the computed transition rates is evaluated by the differences between the transition rates in Babushkin and Coulomb gauges, as well as via a cancellation factor analysis. Out of the 989 computed transitions in this work, 205 are assigned to the accuracy classes AA-B, that is, with uncertainties smaller than 10%, following the criteria defined by the Atomic Spectra Database from the National Institute of Standards and Technology. We discuss the influence of the new log(gf) values on the solar oxygen abundance, ultimately advocating for log epsilon(O) = 8.70 +/- 0.04.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- atomic data
- Sun: abundances
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Li, W.
- Jönsson, P.
- Amarsi, Anish
- Li, M. C.
- Grumer, Jon
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