Towards the Provision of Accurate Atomic Data for Neutral Iron

Andrew Conroy; Catherine Ramsbottom; Connor Ballance; Francis Keenan

doi:10.3390/galaxies6030091

Towards the Provision of Accurate Atomic Data for Neutral Iron

Andrew Conroy, Catherine Ramsbottom, Connor Ballance, Francis Keenan

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Abstract

The rich emission and absorption line spectra of Fe I may be used to extract crucial information on astrophysical plasmas, such as stellar metallicities. There is currently a lack, in quality and quantity, of accurate level-resolved effective electron-impact collision strengths and oscillator strengths for radiative transitions. Here, we discuss the challenges in obtaining an accurate model of the neutral iron atom and compare our theoretical fine-structure energy levels with observation for several increasingly large models. Radiative data is presented for several transitions for which the atomic data is accurately known.

Original language	English
Article number	91
Number of pages	6
Journal	Galaxies
Volume	6
Issue number	3
DOIs	https://doi.org/10.3390/galaxies6030091
Publication status	Published - 25 Aug 2018

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10.3390/galaxies6030091Licence: CC BY

Towards the Provision of Accurate Atomic Data for Neutral Iron
Copyright 2018 the authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 228 KBLicence: CC BY

Cite this

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abstract = "The rich emission and absorption line spectra of Fe I may be used to extract crucial information on astrophysical plasmas, such as stellar metallicities. There is currently a lack, in quality and quantity, of accurate level-resolved effective electron-impact collision strengths and oscillator strengths for radiative transitions. Here, we discuss the challenges in obtaining an accurate model of the neutral iron atom and compare our theoretical fine-structure energy levels with observation for several increasingly large models. Radiative data is presented for several transitions for which the atomic data is accurately known.",

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AU - Ramsbottom, Catherine

AU - Ballance, Connor

AU - Keenan, Francis

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Y1 - 2018/8/25

N2 - The rich emission and absorption line spectra of Fe I may be used to extract crucial information on astrophysical plasmas, such as stellar metallicities. There is currently a lack, in quality and quantity, of accurate level-resolved effective electron-impact collision strengths and oscillator strengths for radiative transitions. Here, we discuss the challenges in obtaining an accurate model of the neutral iron atom and compare our theoretical fine-structure energy levels with observation for several increasingly large models. Radiative data is presented for several transitions for which the atomic data is accurately known.

AB - The rich emission and absorption line spectra of Fe I may be used to extract crucial information on astrophysical plasmas, such as stellar metallicities. There is currently a lack, in quality and quantity, of accurate level-resolved effective electron-impact collision strengths and oscillator strengths for radiative transitions. Here, we discuss the challenges in obtaining an accurate model of the neutral iron atom and compare our theoretical fine-structure energy levels with observation for several increasingly large models. Radiative data is presented for several transitions for which the atomic data is accurately known.

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Towards the Provision of Accurate Atomic Data for Neutral Iron

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