All names: SDSS J074347.81+424023.2, SDSS J074347.83+424023.3, Gaia DR2 924315311863541248, GALEX 2419490867580507837, USNO-A2.0 1275-07041707, Gaia DR3 924315311863541248, Gaia EDR3 924315311863541248, SDSS J074347.83+424023.30, J0743+4240
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Coutu et al. 2019 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 07 43 47.84 (0.4) | 07 43 47.82 | 07 43 47.82 | 07 43 47.84 (0.5) | 07 43 47.82 (0.5) | 07 43 47.83 | |||||
| Declination | 42 40 23.54 (0.4) | 42 40 23.23 | 42 40 23.20 | 42 40 23.53 (0.4) | 42 40 23.20 (0.4) | 42 40 23.31 | |||||
| Spectral type | DBZ | DBAZ | DBAZ | DZ: | |||||||
| Effective temperature | [K] | 16667.0 | 12303.0 (728) | 13006.0 (611) | |||||||
| log(g) | [cgs] | 9.43 | 7.72 | 8.01 (0.5) | |||||||
| Mass | [M☉] | 1.333 | 0.437 | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.2480 | |||||||||
| log(H/He) | -5.21 | <-6.1417 | |||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | -8.446 (0.9) | ||||||||||
| log(Ca/H) | |||||||||||
| log(N/He) | |||||||||||
| log(O/He) | |||||||||||
| log(Na/He) | |||||||||||
| log(Mg/He) | |||||||||||
| log(Al/He) | |||||||||||
| log(Si/He) | |||||||||||
| log(P/He) | |||||||||||
| log(S/He) | |||||||||||
| log(Cl/He) | |||||||||||
| log(Sc/He) | |||||||||||
| log(Ti/He) | |||||||||||
| log(V/He) | |||||||||||
| log(Cr/He) | |||||||||||
| log(Mn/He) | |||||||||||
| log(Fe/He) | |||||||||||
| log(Co/He) | |||||||||||
| log(Ni/He) | |||||||||||
| log(Cu/He) | |||||||||||
| log(Zn/He) | |||||||||||
| log(Ga/He) | |||||||||||
| log(Ge/He) | |||||||||||
| log(Sr/He) | |||||||||||
| Parallax | [mas] | 2.31 (0.5) | 1.95 | 1.95 (0.7) | 1.95 (0.7) | ||||||
| Distance | [pc] | 433.03 (101) | 511.66 (172) | 511.66 (172) | 511.67 (172) | ||||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 14.82928198 (0.5) | 14.41487489 (1) | 14.415 (1) | |||||||
| Proper motion (declination) | [mas/yr] | 21.11779066 (0.4) | 21.29846248 (0.7) | 21.298 (0.7) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 19.10 (0.3) | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 19.30 (0.3) | ||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.99 (0.04) | 19.99 (0.04) | 19.95 (0.05) | ||||||||
| g magnitude | 19.90 (0.02) | 19.90 (0.02) | 19.94 (0.03) | ||||||||
| r magnitude | 20.10 (0.02) | 20.10 (0.02) | 20.11 (0.03) | ||||||||
| i magnitude | 20.28 (0.04) | 20.28 (0.04) | 20.36 (0.05) | ||||||||
| z magnitude | 20.72 (0.2) | 20.72 (0.2) | 20.32 (0.1) | ||||||||
| G magnitude | 19.99 (0.04) | 20.07 | 20.07 (0.006) | ||||||||
| BP magnitude | 20.03 (0.04) | 19.98 | |||||||||
| RP magnitude | 20.01 (0.09) | 19.98 | |||||||||
| Pan g magnitude | 19.96 (0.02) | ||||||||||
| Pan r magnitude | 20.12 (0.01) | ||||||||||
| Pan i magnitude | 20.27 (0.01) | ||||||||||
| Pan z magnitude | 20.50 (0.03) | ||||||||||
| Pan y magnitude | 20.20 (0.2) | ||||||||||
| E(B-V) | 0.032 | ||||||||||
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour (Université de Montréal) and Dr. Simon Blouin (University of Victoria). Please send database updates, corrections, suggestions or bug reports to patrick.dufour@umontreal.ca.