The Influence of Chemi-Ionization and Recombination Processes on Spectral Line Shapes in Stellar Atmospheres
The chemi-ionization processes in atom - Rydberg atom collisions, as well as the corresponding chemi-recombination processes, are considered as factors of influence on the atom exited-state populations in weakly ionized layers of stellar atmospheres. The presented results are related to the photosph...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2011-12-01
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| Series: | Open Astronomy |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/astro-2017-0337 |
| _version_ | 1818366440359591936 |
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| author | Mihajlov Anatolij A. Ignjatović Ljubinko M. Srécković Vladimir A. Dimitrijević Milan S. |
| author_facet | Mihajlov Anatolij A. Ignjatović Ljubinko M. Srécković Vladimir A. Dimitrijević Milan S. |
| author_sort | Mihajlov Anatolij A. |
| collection | DOAJ |
| description | The chemi-ionization processes in atom - Rydberg atom collisions, as well as the corresponding chemi-recombination processes, are considered as factors of influence on the atom exited-state populations in weakly ionized layers of stellar atmospheres. The presented results are related to the photospheres of the Sun and some M red dwarfs, as well as weakly ionized layers of DB white dwarf atmospheres. It has been found that the mentioned chemi-ionization and recombination processes dominate over the concurrent electron-atom and electron-ion ionization and recombination processes in all parts of the considered stellar atmospheres. The obtained results demonstrate the fact that the considered processes must have significant influence on the optical properties of stellar atmospheres. It is shown that these processes and their importance for non-local thermodynamic equilibrium (non-LTE) modeling of the solar atmospheres should be investigated further. |
| first_indexed | 2024-12-13T22:36:11Z |
| format | Article |
| id | doaj.art-2c479d36603c41f5b20020d90f052366 |
| institution | Directory Open Access Journal |
| issn | 2543-6376 |
| language | English |
| last_indexed | 2024-12-13T22:36:11Z |
| publishDate | 2011-12-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Astronomy |
| spelling | doaj.art-2c479d36603c41f5b20020d90f0523662022-12-21T23:28:57ZengDe GruyterOpen Astronomy2543-63762011-12-0120456657110.1515/astro-2017-0337astro-2017-0337The Influence of Chemi-Ionization and Recombination Processes on Spectral Line Shapes in Stellar AtmospheresMihajlov Anatolij A.0Ignjatović Ljubinko M.1Srécković Vladimir A.2Dimitrijević Milan S.3Institute of Physics, University of Belgrade, P.O. Box 57, 11001 Belgrade, Serbia SerbiaInstitute of Physics, University of Belgrade, P.O. Box 57, 11001 Belgrade, Serbia SerbiaInstitute of Physics, University of Belgrade, P.O. Box 57, 11001 Belgrade, Serbia SerbiaIsaac Newton Institute of Chile, Yugoslavia Branch, Volgina 7, 11060 Belgrade, Serbia FranceThe chemi-ionization processes in atom - Rydberg atom collisions, as well as the corresponding chemi-recombination processes, are considered as factors of influence on the atom exited-state populations in weakly ionized layers of stellar atmospheres. The presented results are related to the photospheres of the Sun and some M red dwarfs, as well as weakly ionized layers of DB white dwarf atmospheres. It has been found that the mentioned chemi-ionization and recombination processes dominate over the concurrent electron-atom and electron-ion ionization and recombination processes in all parts of the considered stellar atmospheres. The obtained results demonstrate the fact that the considered processes must have significant influence on the optical properties of stellar atmospheres. It is shown that these processes and their importance for non-local thermodynamic equilibrium (non-LTE) modeling of the solar atmospheres should be investigated further.https://doi.org/10.1515/astro-2017-0337starsatomic processes |
| spellingShingle | Mihajlov Anatolij A. Ignjatović Ljubinko M. Srécković Vladimir A. Dimitrijević Milan S. The Influence of Chemi-Ionization and Recombination Processes on Spectral Line Shapes in Stellar Atmospheres Open Astronomy stars atomic processes |
| title | The Influence of Chemi-Ionization and Recombination Processes on Spectral Line Shapes in Stellar Atmospheres |
| title_full | The Influence of Chemi-Ionization and Recombination Processes on Spectral Line Shapes in Stellar Atmospheres |
| title_fullStr | The Influence of Chemi-Ionization and Recombination Processes on Spectral Line Shapes in Stellar Atmospheres |
| title_full_unstemmed | The Influence of Chemi-Ionization and Recombination Processes on Spectral Line Shapes in Stellar Atmospheres |
| title_short | The Influence of Chemi-Ionization and Recombination Processes on Spectral Line Shapes in Stellar Atmospheres |
| title_sort | influence of chemi ionization and recombination processes on spectral line shapes in stellar atmospheres |
| topic | stars atomic processes |
| url | https://doi.org/10.1515/astro-2017-0337 |
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