All names: GALEX J152226.1-012327, Gaia DR2 4415350354519959552, SDSS J152226.05-012327.0, SDSS J152226.05-012327.2, Gaia EDR3 4415350354520138624, SDSS J152226.05-012327.24, Gaia DR3 4415350354520138624
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 22 26.05 (0.2) | 15 22 26.06 | 15 22 26.05 (0.2) | 15 22 26.07 (0.2) | ||||||
| Declination | -01 23 27.38 (0.2) | -01 23 27.06 | -01 23 27.37 (0.1) | -01 23 27.01 (0.2) | ||||||
| Spectral type | DAO | DAO/sdO | DA | sdO | ||||||
| Effective temperature | [K] | 69957.0 (5149) | 100000.0 (9000) | |||||||
| log(g) | [cgs] | 6.88 (0.1) | 7.07 (0.1) | |||||||
| Mass | [M☉] | 0.39 (0.04) | ||||||||
| log(Luminosity) | [L☉] | 1.48 (0.2) | ||||||||
| Cooling age | [Gyr] | 0.0001 | ||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(C/H) | ||||||||||
| log(N/H) | ||||||||||
| log(O/H) | ||||||||||
| log(Na/H) | ||||||||||
| log(Mg/H) | ||||||||||
| log(Al/H) | ||||||||||
| log(Si/H) | ||||||||||
| log(P/H) | ||||||||||
| log(S/H) | ||||||||||
| log(Sc/H) | ||||||||||
| log(Ti/H) | ||||||||||
| log(Cr/H) | ||||||||||
| log(Mn/H) | ||||||||||
| log(Fe/H) | ||||||||||
| log(Ni/H) | ||||||||||
| Parallax | [mas] | 0.70 (0.2) | 0.83 (0.2) | 0.70 (0.2) | ||||||
| Distance | [pc] | 1437.33 (363) | 1197.75 (282) | 1437.40 (363) | ||||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -19.09153358 (0.2) | -19.952 (0.4) | -19.092 (0.2) | ||||||
| Proper motion (declination) | [mas/yr] | -23.15073888 (0.2) | -22.974 (0.3) | -23.151 (0.2) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 17.66 (0.01) | 17.67 (0.02) | 17.66 (0.01) | |||||||
| g magnitude | 17.97 (0.006) | 17.98 (0.01) | 17.97 (0.006) | |||||||
| r magnitude | 18.36 (0.008) | 18.36 (0.02) | 18.36 (0.008) | |||||||
| i magnitude | 18.67 (0.01) | 18.68 (0.02) | 18.67 (0.01) | |||||||
| z magnitude | 18.98 (0.05) | 18.97 (0.05) | 18.98 (0.05) | |||||||
| G magnitude | 18.22 (0.02) | 18.26 | 18.22 (0.005) | |||||||
| BP magnitude | 18.10 (0.02) | 18.08 | ||||||||
| RP magnitude | 18.34 (0.04) | 18.40 | ||||||||
| Pan g magnitude | 18.11 (0.009) | |||||||||
| Pan r magnitude | 18.46 (0.003) | |||||||||
| Pan i magnitude | 18.78 (0.005) | |||||||||
| Pan z magnitude | 19.01 (0.008) | |||||||||
| Pan y magnitude | 19.20 (0.04) | |||||||||
| E(B-V) | 0.104 | |||||||||
* 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.