All names: SDSS J082556.81+130753.4, 2MASS J08255680+1307537, GALEX J082556.7+130754, GALEXJ08259+1307, EPIC 211499370, GALEX J082556.8+130754, Gaia DR3 650908345319118720, SDSS J082556.80+130753.5, TIC 6997163, Gaia DR2 650908345319118720
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 08 25 56.86 | 08 25 56.81 (0.05) | ||
| Declination | 13 07 54.29 | 13 07 53.60 (0.03) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 38070.0 (730) | ||
| log(g) | [cgs] | 5.91 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 1.13 (0.07) | 1.04 (0.06) | |
| Distance | [pc] | 885.19 (58) | 965.90 (54) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 0.804 (0.1) | 0.454 (0.06) | |
| Proper motion (declination) | [mas/yr] | -9.932 (0.07) | -10.439 (0.05) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | 14.59 | |||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 14.04 (0.02) | 14.04 (0.02) | ||
| H magnitude | 13.62 (0.04) | 13.62 (0.04) | ||
| K magnitude | 13.45 (0.04) | 13.45 (0.04) | ||
| u magnitude | 14.23 (0.003) | 14.22 (0.004) | ||
| g magnitude | 14.39 (0.003) | 14.37 (0.003) | ||
| r magnitude | 14.63 (0.003) | 14.60 (0.004) | ||
| i magnitude | 14.71 (0.004) | 14.69 (0.004) | ||
| z magnitude | 14.77 (0.004) | 14.77 (0.005) | ||
| G magnitude | 14.47 (0.0008) | 14.46 (0.003) | ||
| BP magnitude | 14.41 (0.007) | |||
| RP magnitude | 14.38 (0.003) | |||
| Pan g magnitude | 14.46 (0.003) | |||
| Pan r magnitude | 14.65 (0.005) | |||
| Pan i magnitude | 14.73 (0.005) | |||
| Pan z magnitude | 14.80 (0.005) | |||
| Pan y magnitude | 14.82 (0.008) | |||
| 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.