All names: SDSS J150435.33+013708.0, GALEX 2492709545897362353, SDSS J150435.35+013707.9, LAMOST J150435.34+013707.9, Gaia EDR3 1153557434644593920, SDSS J150435.35+013707.97, Gaia DR2 1153557434644593920, Gaia DR3 1153557434644593920
| Parameter | Unit | Gaia EDR3 | SDSS DR10 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 04 35.32 (0.3) | 15 04 35.33 | 15 04 35.32 (0.4) | 15 04 35.33 (0.4) | |||||
| Declination | 01 37 07.72 (0.3) | 01 37 08.06 | 01 37 07.73 (0.4) | 01 37 08.06 (0.4) | |||||
| Spectral type | DB | DB | DB | ||||||
| Effective temperature | [K] | 15325.0 | 15524.0 (14) | ||||||
| log(g) | [cgs] | 8.11 | 8.03 (0.01) | ||||||
| Mass | [M☉] | 0.656 | 0.695 (0.06) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | -5.708 | ||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 2.16 (0.3) | 2.96 (0.5) | 2.96 (0.5) | |||||
| Distance | [pc] | 462.10 (73) | 337.80 (54) | 337.80 (54) | |||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -11.3381154 (0.4) | -9.016058679 (0.8) | -9.016 (0.8) | |||||
| Proper motion (declination) | [mas/yr] | -19.54706792 (0.3) | -21.46052151 (0.8) | -21.461 (0.8) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 19.24 (0.02) | 19.26 (0.03) | 19.21 (0.03) | ||||||
| g magnitude | 19.27 (0.01) | 19.30 (0.02) | 19.27 (0.01) | ||||||
| r magnitude | 19.53 (0.02) | 19.56 (0.07) | 19.64 (0.02) | ||||||
| i magnitude | 19.87 (0.03) | 19.92 (0.4) | 20.36 (0.05) | ||||||
| z magnitude | 21.11 (0.3) | 21.09 (0.5) | 20.27 (0.2) | ||||||
| G magnitude | 19.41 (0.2) | 19.45 | 19.45 (0.007) | ||||||
| BP magnitude | 19.30 (0.2) | ||||||||
| RP magnitude | 19.40 (0.08) | ||||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.039 | ||||||||
* 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.