Metal monoxide abundances as a function of the C/O ratio
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910592404553728 |
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| author | Meijer, Gerard von Helden, Gert |
| author_facet | Meijer, Gerard von Helden, Gert |
| contents | The diatomic metal monoxides whose optical spectra define the classification of stars on the asymptotic giant branch (AGB), that is, TiO, YO, ZrO, and LaO, have the unusual property that their ionization energy is below their dissociation limit. The cations of these metal monoxides can be efficiently produced via associative ionization of their constituent ground state atoms and are long-lived. We present a simple model that can explain the observed relative abundance of these metal oxides as a function of the C/O ratio. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2406_13440 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Metal monoxide abundances as a function of the C/O ratio Meijer, Gerard von Helden, Gert Solar and Stellar Astrophysics The diatomic metal monoxides whose optical spectra define the classification of stars on the asymptotic giant branch (AGB), that is, TiO, YO, ZrO, and LaO, have the unusual property that their ionization energy is below their dissociation limit. The cations of these metal monoxides can be efficiently produced via associative ionization of their constituent ground state atoms and are long-lived. We present a simple model that can explain the observed relative abundance of these metal oxides as a function of the C/O ratio. |
| title | Metal monoxide abundances as a function of the C/O ratio |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2406.13440 |