Atomic Data Assessment with PyNeb: Radiative and Electron Impact Excitation Rates for [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>]
We use the PyNeb 1.1.16 Python package to evaluate the atomic datasets available for the spectral modeling of [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>], which list level energies, <...
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MDPI AG
2023-04-01
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| author | Claudio Mendoza José E. Méndez-Delgado Manuel Bautista Jorge García-Rojas Christophe Morisset |
| author_facet | Claudio Mendoza José E. Méndez-Delgado Manuel Bautista Jorge García-Rojas Christophe Morisset |
| author_sort | Claudio Mendoza |
| collection | DOAJ |
| description | We use the PyNeb 1.1.16 Python package to evaluate the atomic datasets available for the spectral modeling of [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>], which list level energies, <i>A</i>-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 <span style="font-variant: small-caps;">iii</span>], we arrive at conclusive results that allow us to select the default datasets, while for [Fe <span style="font-variant: small-caps;">ii</span>], the conspicuous temperature dependency on the collisional data becomes a deterrent. This dependency is mainly due to the singularly low critical density of the <inline-formula><math display="inline"><semantics><mrow><mn>3</mn><msup><mi mathvariant="normal">d</mi><mn>7</mn></msup><mspace width="4pt"></mspace><mi mathvariant="normal">a</mi><msup><mspace width="0.166667em"></mspace><mn>4</mn></msup><msub><mi mathvariant="normal">F</mi><mrow><mn>9</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></semantics></math></inline-formula> 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. |
| first_indexed | 2024-03-11T05:15:31Z |
| format | Article |
| id | doaj.art-f2394039925048dcaba8275f49733f37 |
| institution | Directory Open Access Journal |
| issn | 2218-2004 |
| language | English |
| last_indexed | 2024-03-11T05:15:31Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atoms |
| spelling | doaj.art-f2394039925048dcaba8275f49733f372023-11-17T18:18:24ZengMDPI AGAtoms2218-20042023-04-011146310.3390/atoms11040063Atomic Data Assessment with PyNeb: Radiative and Electron Impact Excitation Rates for [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>]Claudio Mendoza0José E. Méndez-Delgado1Manuel Bautista2Jorge García-Rojas3Christophe Morisset4Physics Center, Venezuelan Institute for Scientific Research (IVIC), Caracas 1020, VenezuelaAstronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg, D-69120 Heidelberg, GermanyDepartment of Physics, Western Michigan University, Kalamazoo, MI 49008, USAInstituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, SpainInstituto de Astronomía, Universidad Nacional Autónoma de México, Ensenada 22860, MexicoWe use the PyNeb 1.1.16 Python package to evaluate the atomic datasets available for the spectral modeling of [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>], which list level energies, <i>A</i>-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 <span style="font-variant: small-caps;">iii</span>], we arrive at conclusive results that allow us to select the default datasets, while for [Fe <span style="font-variant: small-caps;">ii</span>], the conspicuous temperature dependency on the collisional data becomes a deterrent. This dependency is mainly due to the singularly low critical density of the <inline-formula><math display="inline"><semantics><mrow><mn>3</mn><msup><mi mathvariant="normal">d</mi><mn>7</mn></msup><mspace width="4pt"></mspace><mi mathvariant="normal">a</mi><msup><mspace width="0.166667em"></mspace><mn>4</mn></msup><msub><mi mathvariant="normal">F</mi><mrow><mn>9</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></semantics></math></inline-formula> 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.https://www.mdpi.com/2218-2004/11/4/63nebular modelingastrophysical softwareplasma diagnosticsatomic databasesatomic data assessment |
| spellingShingle | Claudio Mendoza José E. Méndez-Delgado Manuel Bautista Jorge García-Rojas Christophe Morisset Atomic Data Assessment with PyNeb: Radiative and Electron Impact Excitation Rates for [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>] Atoms nebular modeling astrophysical software plasma diagnostics atomic databases atomic data assessment |
| title | Atomic Data Assessment with PyNeb: Radiative and Electron Impact Excitation Rates for [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>] |
| title_full | Atomic Data Assessment with PyNeb: Radiative and Electron Impact Excitation Rates for [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>] |
| title_fullStr | Atomic Data Assessment with PyNeb: Radiative and Electron Impact Excitation Rates for [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>] |
| title_full_unstemmed | Atomic Data Assessment with PyNeb: Radiative and Electron Impact Excitation Rates for [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>] |
| title_short | Atomic Data Assessment with PyNeb: Radiative and Electron Impact Excitation Rates for [Fe <span style="font-variant: small-caps;">ii</span>] and [Fe <span style="font-variant: small-caps;">iii</span>] |
| title_sort | atomic data assessment with pyneb radiative and electron impact excitation rates for fe span style font variant small caps ii span and fe span style font variant small caps iii span |
| topic | nebular modeling astrophysical software plasma diagnostics atomic databases atomic data assessment |
| url | https://www.mdpi.com/2218-2004/11/4/63 |
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