All names: SDSS J014023.99+001542.6, Gaia DR2 2510213431651572096, SDSS J014023.98+001542.7, GALEX J014023.9+001543, Gaia EDR3 2510213431651572096
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 40 23.95 (0.2) | 01 40 23.99 | 01 40 23.95 (0.3) | 01 40 23.98 (46) | 01 40 23.98 | 01 40 23.99 | ||
| Declination | 00 15 42.40 (0.1) | 00 15 42.72 | 00 15 42.41 (0.2) | 00 15 42.70 (39) | 00 15 42.70 | 00 15 42.61 | ||
| Spectral type | sdB | SDB | DAB | |||||
| Effective temperature | [K] | 44133.0 (1121) | 42176.0 (918) | |||||
| log(g) | [cgs] | 7.42 (0.1) | 7.33 (0.1) | |||||
| Mass | [M☉] | |||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 4.66 (0.2) | 4.23 (0.4) | |||||
| Distance | [pc] | 214.82 (11) | 236.52 (22) | |||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -34.62539752 (0.3) | -35.03552214 (0.4) | -36.8 | ||||
| Proper motion (declination) | [mas/yr] | -4.842232315 (0.2) | -5.162860727 (0.4) | -6.8 | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 18.11 (0.01) | 18.08 (0.02) | 18.29 (0.03) | 18.30 (0.03) | ||||
| g magnitude | 17.94 (0.006) | 17.89 (0.006) | 18.19 (0.02) | 18.19 (0.02) | ||||
| r magnitude | 18.07 (0.007) | 18.40 (0.01) | 18.40 (0.01) | 18.40 (0.01) | ||||
| i magnitude | 18.25 (0.009) | 18.20 (0.009) | 18.62 (0.03) | 18.61 (0.03) | ||||
| z magnitude | 18.48 (0.04) | 18.41 (0.04) | 18.82 (0.04) | 18.81 (0.04) | ||||
| G magnitude | 18.52 (0.01) | 18.55 | ||||||
| BP magnitude | 18.03 (0.01) | 17.99 | ||||||
| RP magnitude | 18.00 (0.02) | 18.00 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| E(B-V) | 0.018 | |||||||
* 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.