Definitions of all white dwarf spectral types discussed in this work, where photometric model composition refers to composition-selected Gentile Fusillo et al. (2021) parameters. Adopted parameters for DZ and DQ white dwarfs in this work use the hybrid photometric/spectroscopic methods and are shown instead in Tables 6–8.
| Spectral type . | Number in . | Spectral features in order . | Photometric model composition . |
|---|---|---|---|
| (SpT) . | this work . | of strength . | . |
| DA | 100 | Hydrogen Balmer | pure-H |
| DAH | 28 | Hydrogen Balmer + magnetic | pure-H |
| DB | 2 | Neutral helium | log (H/He) =−5 |
| DC | 69 | Featureless | log (H/He) =−5, pure-He below 7000 K, |
| assumed pure-H below 5000 K | |||
| DAZ | 10 | Hydrogen Balmer + metal | pure-H |
| DZ | 12 | Metal | log (H/He) =−5, pure-He below 7000 K |
| DZH | 5 | Metal + magnetic | log (H/He) =−5, pure-He below 7000 K |
| DZA | 4 | Metal + hydrogen Balmer | log (H/He) =−5, pure-He below 7000 K |
| DZAH | 2 | Metal + hydrogen Balmer + magnetic | log (H/He) =−5, pure-He below 7000 K |
| DQ | 7 | Carbon (molecular bands) | log (H/He) =−5, pure-He below 7000 K |
| Warm DQ | 1 | Carbon (atomic lines) | pure-He |
| DQpec | 2 | Carbon (molecular bands, shifted wavelengths) | log (H/He) =−5, pure-He below 7000 K |
| DQZ | 2 | Carbon + metal | log (H/He) =−5, pure-He below 7000 K |
| DZQ | 1 | Metal + carbon | log (H/He) =−5, pure-He below 7000 K |
| DZQH | 1 | Metal + carbon + magnetic | log (H/He) =−5, pure-He below 7000 K |
| Spectral type . | Number in . | Spectral features in order . | Photometric model composition . |
|---|---|---|---|
| (SpT) . | this work . | of strength . | . |
| DA | 100 | Hydrogen Balmer | pure-H |
| DAH | 28 | Hydrogen Balmer + magnetic | pure-H |
| DB | 2 | Neutral helium | log (H/He) =−5 |
| DC | 69 | Featureless | log (H/He) =−5, pure-He below 7000 K, |
| assumed pure-H below 5000 K | |||
| DAZ | 10 | Hydrogen Balmer + metal | pure-H |
| DZ | 12 | Metal | log (H/He) =−5, pure-He below 7000 K |
| DZH | 5 | Metal + magnetic | log (H/He) =−5, pure-He below 7000 K |
| DZA | 4 | Metal + hydrogen Balmer | log (H/He) =−5, pure-He below 7000 K |
| DZAH | 2 | Metal + hydrogen Balmer + magnetic | log (H/He) =−5, pure-He below 7000 K |
| DQ | 7 | Carbon (molecular bands) | log (H/He) =−5, pure-He below 7000 K |
| Warm DQ | 1 | Carbon (atomic lines) | pure-He |
| DQpec | 2 | Carbon (molecular bands, shifted wavelengths) | log (H/He) =−5, pure-He below 7000 K |
| DQZ | 2 | Carbon + metal | log (H/He) =−5, pure-He below 7000 K |
| DZQ | 1 | Metal + carbon | log (H/He) =−5, pure-He below 7000 K |
| DZQH | 1 | Metal + carbon + magnetic | log (H/He) =−5, pure-He below 7000 K |
Definitions of all white dwarf spectral types discussed in this work, where photometric model composition refers to composition-selected Gentile Fusillo et al. (2021) parameters. Adopted parameters for DZ and DQ white dwarfs in this work use the hybrid photometric/spectroscopic methods and are shown instead in Tables 6–8.
| Spectral type . | Number in . | Spectral features in order . | Photometric model composition . |
|---|---|---|---|
| (SpT) . | this work . | of strength . | . |
| DA | 100 | Hydrogen Balmer | pure-H |
| DAH | 28 | Hydrogen Balmer + magnetic | pure-H |
| DB | 2 | Neutral helium | log (H/He) =−5 |
| DC | 69 | Featureless | log (H/He) =−5, pure-He below 7000 K, |
| assumed pure-H below 5000 K | |||
| DAZ | 10 | Hydrogen Balmer + metal | pure-H |
| DZ | 12 | Metal | log (H/He) =−5, pure-He below 7000 K |
| DZH | 5 | Metal + magnetic | log (H/He) =−5, pure-He below 7000 K |
| DZA | 4 | Metal + hydrogen Balmer | log (H/He) =−5, pure-He below 7000 K |
| DZAH | 2 | Metal + hydrogen Balmer + magnetic | log (H/He) =−5, pure-He below 7000 K |
| DQ | 7 | Carbon (molecular bands) | log (H/He) =−5, pure-He below 7000 K |
| Warm DQ | 1 | Carbon (atomic lines) | pure-He |
| DQpec | 2 | Carbon (molecular bands, shifted wavelengths) | log (H/He) =−5, pure-He below 7000 K |
| DQZ | 2 | Carbon + metal | log (H/He) =−5, pure-He below 7000 K |
| DZQ | 1 | Metal + carbon | log (H/He) =−5, pure-He below 7000 K |
| DZQH | 1 | Metal + carbon + magnetic | log (H/He) =−5, pure-He below 7000 K |
| Spectral type . | Number in . | Spectral features in order . | Photometric model composition . |
|---|---|---|---|
| (SpT) . | this work . | of strength . | . |
| DA | 100 | Hydrogen Balmer | pure-H |
| DAH | 28 | Hydrogen Balmer + magnetic | pure-H |
| DB | 2 | Neutral helium | log (H/He) =−5 |
| DC | 69 | Featureless | log (H/He) =−5, pure-He below 7000 K, |
| assumed pure-H below 5000 K | |||
| DAZ | 10 | Hydrogen Balmer + metal | pure-H |
| DZ | 12 | Metal | log (H/He) =−5, pure-He below 7000 K |
| DZH | 5 | Metal + magnetic | log (H/He) =−5, pure-He below 7000 K |
| DZA | 4 | Metal + hydrogen Balmer | log (H/He) =−5, pure-He below 7000 K |
| DZAH | 2 | Metal + hydrogen Balmer + magnetic | log (H/He) =−5, pure-He below 7000 K |
| DQ | 7 | Carbon (molecular bands) | log (H/He) =−5, pure-He below 7000 K |
| Warm DQ | 1 | Carbon (atomic lines) | pure-He |
| DQpec | 2 | Carbon (molecular bands, shifted wavelengths) | log (H/He) =−5, pure-He below 7000 K |
| DQZ | 2 | Carbon + metal | log (H/He) =−5, pure-He below 7000 K |
| DZQ | 1 | Metal + carbon | log (H/He) =−5, pure-He below 7000 K |
| DZQH | 1 | Metal + carbon + magnetic | log (H/He) =−5, pure-He below 7000 K |
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