All names: FBS 1438+377, SDSS J144009.22+373007.5, Gaia DR2 1486454512898147584, 2MASS J14400924+3730075, TIC 68057460, SDSS J144009.23+373007.5, FBS1438+377, GALEX J144009.2+373008, FBS B 550, Gaia DR3 1486454512898147584
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 14 40 09.20 | 14 40 09.24 (0.02) | ||
| Declination | 37 30 07.80 | 37 30 07.61 (0.03) | ||
| 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] | 0.08 (0.06) | 0.06 (0.04) | |
| Distance | [pc] | 12804.10 (9624) | 16207.46 (9588) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.805 (0.06) | -0.77 (0.03) | |
| Proper motion (declination) | [mas/yr] | -1.205 (0.09) | -1.228 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.98 (0.09) | 15.98 (0.09) | ||
| H magnitude | 16.10 (0.2) | 16.10 (0.2) | ||
| K magnitude | 16.32 | |||
| u magnitude | 17.43 (0.009) | 17.43 (0.009) | ||
| g magnitude | 16.19 (0.005) | 16.19 (0.005) | ||
| r magnitude | 16.38 (0.005) | 16.38 (0.005) | ||
| i magnitude | 16.55 (0.005) | 16.55 (0.005) | ||
| z magnitude | 16.63 (0.009) | 16.63 (0.009) | ||
| G magnitude | 16.31 (0.0007) | 16.29 (0.003) | ||
| BP magnitude | 16.32 (0.004) | |||
| RP magnitude | 16.23 (0.004) | |||
| Pan g magnitude | 16.24 (0.008) | |||
| Pan r magnitude | 16.40 (0.005) | |||
| Pan i magnitude | 16.57 (0.003) | |||
| Pan z magnitude | 16.67 (0.004) | |||
| Pan y magnitude | 16.68 (0.007) | |||
| E(B-V) | 0.021 | |||
* 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.