All names: Gaia DR3 687887360902696320, GALEX J091507.8+253041, SDSS J091507.87+253041.37, Gaia DR2 687887360902696320, Gaia EDR3 687887360902696320, SDSS J091507.87+253041.4, SDSS J091507.88+253041.4, SDSS J091507.87+253041.3
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 15 07.88 (0.1) | 09 15 07.88 | 09 15 07.88 (0.2) | 09 15 07.88 (0.1) | |||||
| Declination | 25 30 41.25 (0.1) | 25 30 41.46 | 25 30 41.26 (0.2) | 25 30 41.52 (0.1) | |||||
| Spectral type | DAO | DAO | DAO | ||||||
| Effective temperature | [K] | 80952.0 (5029) | 89097.0 (2377) | ||||||
| log(g) | [cgs] | 7.12 (0.1) | 7.13 (0.09) | ||||||
| Mass | [M☉] | 0.48 (0.04) | |||||||
| log(Luminosity) | [L☉] | 1.58 (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] | 0.69 (0.2) | 0.72 (0.2) | 0.69 (0.2) | |||||
| Distance | [pc] | 1454.14 (402) | 1395.87 (483) | 1454.12 (402) | |||||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 1.640087894 (0.2) | 1.768453845 (0.4) | 1.64 (0.2) | |||||
| Proper motion (declination) | [mas/yr] | -16.73132435 (0.1) | -16.68735652 (0.3) | -16.731 (0.1) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 17.31 (0.009) | 17.32 (0.01) | 17.31 (0.009) | ||||||
| g magnitude | 17.74 (0.006) | 17.75 (0.02) | 17.74 (0.006) | ||||||
| r magnitude | 18.28 (0.008) | 18.28 (0.01) | 18.28 (0.008) | ||||||
| i magnitude | 18.67 (0.01) | 18.67 (0.02) | 18.67 (0.01) | ||||||
| z magnitude | 18.96 (0.05) | 18.97 (0.04) | 18.96 (0.05) | ||||||
| G magnitude | 18.01 (0.02) | 18.05 | 18.01 (0.003) | ||||||
| BP magnitude | 17.88 (0.02) | 17.68 | |||||||
| RP magnitude | 18.46 (0.07) | 18.30 | |||||||
| Pan g magnitude | 17.81 (0.008) | ||||||||
| Pan r magnitude | 18.29 (0.004) | ||||||||
| Pan i magnitude | 18.66 (0.007) | ||||||||
| Pan z magnitude | 18.97 (0.02) | ||||||||
| Pan y magnitude | 19.07 (0.07) | ||||||||
| 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.