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Observational const...
Observational constraints on the origin of the elements IV. Standard composition of the Sun
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- Magg, Ekaterina (författare)
- Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.
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- Bergemann, Maria (författare)
- Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.;Univ Copenhagen, Niels Bohr Int Acad, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark.
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- Serenelli, Aldo (författare)
- Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.;CSIC, Inst Space Sci ICE, Carrer Can Magrans S-N, Cerdanyola Del Valles 08193, Spain.;Inst Estudis Espacials Catalunya IEEC, Carrer Gran Capita 2, Barcelona 08034, Spain.
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- Bautista, Manuel (författare)
- Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA.
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- Plez, Bertrand (författare)
- Univ Montpellier, CNRS, LUPM, Montpellier, France.
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- Heiter, Ulrike (författare)
- Uppsala universitet,Observationell astrofysik
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- Gerber, Jeffrey M. (författare)
- Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.
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- Ludwig, Hans-Guenter (författare)
- Heidelberg Univ, Landessternwarte Zentrum Astron, Konigstuhl 12, D-69117 Heidelberg, Germany.
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- Basu, Sarbani (författare)
- Yale Univ, Dept Astron, POB 208101, New Haven, CT 06520 USA.
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- Ferguson, Jason W. (författare)
- Wichita State Univ, Phys Dept, Wichita, KS 67260 USA.
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- Gallego, Helena Carvajal (författare)
- Univ Mons, Phys Atom & Astrophys, B-7000 Mons, Belgium.
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- Gamrath, Sebastien (författare)
- Univ Mons, Phys Atom & Astrophys, B-7000 Mons, Belgium.
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- Palmeri, Patrick (författare)
- Univ Mons, Phys Atom & Astrophys, B-7000 Mons, Belgium.
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- Quinet, Pascal (författare)
- Univ Mons, Phys Atom & Astrophys, B-7000 Mons, Belgium.;Univ Liege, IPNAS, B-4000 Liege, Belgium.
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Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.;Univ Copenhagen, Niels Bohr Int Acad, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark. (creator_code:org_t)
- 2022-05-20
- 2022
- Engelska.
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Ingår i: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 661
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Context. The chemical composition of the Sun is required in the context of various studies in astrophysics, among them in the calculation of standard solar models (SSMs) used to describe the evolution of the Sun from the pre-main-sequence to its present age. Aims. In this work, we provide a critical re-analysis of the solar chemical abundances and corresponding SSMs. Methods. For the photospheric values, we employed new high-quality solar observational data collected with the IAG facility, state-of-the art non-equilibrium modelling, new oscillator strengths, and different atmospheric models, including the MARCS model, along with averages based on Stagger and CO5BOLD 3D radiation-hydrodynamics simulations of stellar convection. We performed new calculations of oscillator strengths for transitions in O I and N I. For O I, which is a critical element with regard to the interior models, calculations were carried out using several independent methods. We investigated our results in comparison with the previous estimates. Results. We find an unprecedented agreement between the new estimates of transition probabilities, thus supporting our revised solar oxygen abundance value. We also provide new estimates of the noble gas Ne abundance. In addition, we discuss the consistency of our photospheric measurements with meteoritic values, taking into account the systematic and correlated errors. Finally, we provide revised chemical abundances, leading to a new value proposed for the solar photospheric present-day metallicity of Z/X=0.0225, which we then employed in SSM calculations. We find that the puzzling mismatch between the helioseismic constraints on the solar interior structure and the model can be resolved thanks to this new chemical composition.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- Sun
- abundances
- stars
- atmospheres
- atomic data
- line
- formation
- radiative transfer
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Magg, Ekaterina
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Bergemann, Maria
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Serenelli, Aldo
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Bautista, Manuel
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Plez, Bertrand
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Heiter, Ulrike
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Gerber, Jeffrey ...
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Ludwig, Hans-Gue ...
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Basu, Sarbani
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Ferguson, Jason ...
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Gallego, Helena ...
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Gamrath, Sebasti ...
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Palmeri, Patrick
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Quinet, Pascal
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Uppsala universitet