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Mendoza C, Méndez-Delgado JE, Bautista M, García-Rojas J, Morisset C. Atomic Data Assessment with PyNeb: Radiative and Electron Impact Excitation Rates for [Fe ii] and [Fe iii]. ATOMS 2023. [DOI: 10.3390/atoms11040063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
We use the PyNeb 1.1.16 Python package to evaluate the atomic datasets available for the spectral modeling of [Fe ii] and [Fe iii], which list level energies, A-values, and effective collision strengths. Most datasets are reconstructed from the sources, and new ones are incorporated to be compared with observed and measured benchmarks. For [Fe iii], we arrive at conclusive results that allow us to select the default datasets, while for [Fe ii], the conspicuous temperature dependency on the collisional data becomes a deterrent. This dependency is mainly due to the singularly low critical density of the 3d7a4F9/2 metastable level that strongly depends on both the radiative and collisional data, although the level populating by fluorescence pumping from the stellar continuum cannot be ruled out. A new version of PyNeb (1.1.17) is released containing the evaluated datasets.
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Affiliation(s)
- Claudio Mendoza
- Physics Center, Venezuelan Institute for Scientific Research (IVIC), Caracas 1020, Venezuela
| | - José E. Méndez-Delgado
- Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, D-69120 Heidelberg, Germany
| | - Manuel Bautista
- Department of Physics, Western Michigan University, Kalamazoo, MI 49008, USA
| | - Jorge García-Rojas
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, Spain
- Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Spain
| | - Christophe Morisset
- Instituto de Astronomía, Universidad Nacional Autónoma de México, Ensenada 22860, Mexico
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