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Extended theoretica...
Extended theoretical transition data in C I-IV
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- Li, W. (författare)
- Malmö universitet,Malmö University,Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Institutionen för materialvetenskap och tillämpad matematik (MTM),Malmö Univ, Dept Mat Sci & Appl Math, SE-20506 Malmö, Sweden.;Lund Univ, Div Math Phys, POB 118, SE-22100 Lund, Sweden.
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- Amarsi, Anish (författare)
- Uppsala universitet,Uppsala University,Teoretisk astrofysik,Malmö Univ, Dept Mat Sci & Appl Math, SE-20506 Malmö, Sweden.;Lund Univ, Div Math Phys, POB 118, SE-22100 Lund, Sweden.
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- Papoulia, A. (författare)
- Malmö universitet,Malmö University,Lund University,Lunds universitet,Matematisk fysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematical Physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,Institutionen för materialvetenskap och tillämpad matematik (MTM)
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- Ekman, J. (författare)
- Malmö universitet,Malmö University,Institutionen för materialvetenskap och tillämpad matematik (MTM),Malmö Univ, Dept Mat Sci & Appl Math, SE-20506 Malmö, Sweden.
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- Jönsson, Per (författare)
- Malmö universitet,Malmö University,Institutionen för materialvetenskap och tillämpad matematik (MTM),Malmö Univ, Dept Mat Sci & Appl Math, SE-20506 Malmö, Sweden.
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(creator_code:org_t)
- 2021-01-28
- 2021
- Engelska 20 s.
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Ingår i: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 1365-2966 .- 0035-8711. ; 502:3, s. 3780-3799
- Relaterad länk:
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http://dx.doi.org/10...
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http://arxiv.org/pdf...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Accurate atomic data are essential for opacity calculations and for abundance analyses of the Sun and other stars. The aim of this work is to provide accurate and extensive results of energy levels and transition data for C i–iv. The Multiconfiguration Dirac–Hartree–Fock and relativistic configuration interaction methods were used in this work. To improve the quality of the wavefunctions and reduce the relative differences between length and velocity forms for transition data involving high Rydberg states, alternative computational strategies were employed by imposing restrictions on the electron substitutions when constructing the orbital basis for each atom and ion. Transition data, for example, weighted oscillator strengths and transition probabilities, are given for radiative electric dipole (E1) transitions involving levels up to 1s22s22p6s for C i, up to 1s22s27f for C ii, up to 1s22s7f for C iii, and up to 1s28g for C iv. Using the difference between the transition rates in length and velocity gauges as an internal validation, the average uncertainties of all presented E1 transitions are estimated to be 8.05 per cent, 7.20 per cent, 1.77 per cent, and 0.28 per cent, respectively, for C i–iv. Extensive comparisons with available experimental and theoretical results are performed and good agreement is observed for most of the transitions. In addition, the C i data were employed in a re-analysis of the solar carbon abundance. The new transition data give a line-by-line dispersion similar to the one obtained when using transition data that are typically used in stellar spectroscopic applications today.
Ämnesord
- 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)
Nyckelord
- Atomic data
- Atomic processes
- Radiative transfer
- Sun: abundances
- atomic data
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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