Hydrogen-Atmosphere White Dwarfs Are Less Likely To Be Found with Wide-Binary Companions
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866916335943942144 |
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| author | Heyl, Jeremy |
| author_facet | Heyl, Jeremy |
| contents | The fraction of white dwarfs found in wide binaries is estimated by cross referencing a catalogue of wide binaries with catalogues photometrically determined white-dwarf candidates and spectroscopically confirmed white dwarf stars. The wide-binary fraction of white dwarfs with hydrogen-dominated atmospheres is about 5%, but the fraction of white dwarfs with helium or carbon-dominated atmospheres is significantly larger. Using spectroscopic classifications, the binary fraction of DA white dwarfs is determined to be $0.063\pm0.002$ and for non-DA white dwarfs is larger at $0.080\pm0.004$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_17634 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Hydrogen-Atmosphere White Dwarfs Are Less Likely To Be Found with Wide-Binary Companions Heyl, Jeremy Solar and Stellar Astrophysics The fraction of white dwarfs found in wide binaries is estimated by cross referencing a catalogue of wide binaries with catalogues photometrically determined white-dwarf candidates and spectroscopically confirmed white dwarf stars. The wide-binary fraction of white dwarfs with hydrogen-dominated atmospheres is about 5%, but the fraction of white dwarfs with helium or carbon-dominated atmospheres is significantly larger. Using spectroscopic classifications, the binary fraction of DA white dwarfs is determined to be $0.063\pm0.002$ and for non-DA white dwarfs is larger at $0.080\pm0.004$. |
| title | Hydrogen-Atmosphere White Dwarfs Are Less Likely To Be Found with Wide-Binary Companions |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2407.17634 |