All names: TIC 383753712, SDSS J183929.51+422339.8, GALEX J183929.4+422339, SDSSJ183929.51+422339.8, Gaia DR2 2110959456571565184, Gaia EDR3 2110959383554923008, 2MASS J18392949+4223395, Gaia DR3 2110959456571565184
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 18 39 35.78 (0.4) | 18 39 29.51 | 18 39 29.51 (0.03) | ||
| Declination | 42 22 39.22 (0.6) | 42 23 39.84 | 42 23 39.88 (0.04) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 4.38 (0.5) | 0.01 (0.06) | 0.01 (0.06) | |
| Distance | [pc] | 228.10 (24) | 86206.90 (433264) | 86206.90 (433264) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -6.903 (0.6) | -2.185 (0.1) | -2.022 (0.05) | |
| Proper motion (declination) | [mas/yr] | 28.32 (0.7) | -3.034 (0.1) | -2.542 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 16.52 (0.1) | 16.52 (0.1) | |||
| H magnitude | 16.02 | ||||
| K magnitude | 16.84 | ||||
| u magnitude | 17.00 (0.008) | 17.00 (0.008) | |||
| g magnitude | 16.32 (0.003) | 16.32 (0.003) | |||
| r magnitude | 16.57 (0.004) | 16.57 (0.004) | |||
| i magnitude | 16.78 (0.005) | 16.78 (0.005) | |||
| z magnitude | 16.93 (0.01) | 16.93 (0.01) | |||
| G magnitude | 20.35 (0.007) | 16.48 (0.001) | 16.46 (0.003) | ||
| BP magnitude | 20.57 (0.08) | 16.45 (0.006) | |||
| RP magnitude | 20.05 (0.1) | 16.49 (0.007) | |||
| Pan g magnitude | 16.39 (0.002) | ||||
| Pan r magnitude | 16.61 (0.003) | ||||
| Pan i magnitude | 16.82 (0.002) | ||||
| Pan z magnitude | 16.98 (0.006) | ||||
| Pan y magnitude | 17.06 (0.006) | ||||
| E(B-V) | 0.041 | ||||
* 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.