All names: SDSSJ135713.42+224433.9, Gaia DR3 1250821027807431040, GALEX J135713.4+224433, TIC 416024439, SDSS J135713.42+224433.8, SDSS J135713.43+224433.9, SDSS J135713.42+224433.9, [BGK2006] J135713.43+224433.9, Gaia DR2 1250821027807431040, 2MASS J13571345+2244342, LAMOST J135713.42+224433.9
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 13 57 13.42 | 13 57 13.43 (0.03) | ||
| Declination | 22 44 33.90 | 22 44 33.91 (0.03) | ||
| Spectral type | sdB | sdA | ||
| Effective temperature | [K] | 20281.0 (129) | ||
| log(g) | [cgs] | 4.91 (0.01) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.30 (0.08) | 0.29 (0.05) | |
| Distance | [pc] | 3362.47 (953) | 3392.13 (565) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -4.435 (0.1) | -4.39 (0.05) | |
| Proper motion (declination) | [mas/yr] | -7.277 (0.1) | -7.594 (0.04) | |
| 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 | 17.55 | |||
| K magnitude | 15.85 (0.3) | 15.85 (0.3) | ||
| u magnitude | 16.38 (0.007) | 16.38 (0.007) | ||
| g magnitude | 15.98 (0.004) | 15.98 (0.004) | ||
| r magnitude | 16.32 (0.004) | 16.32 (0.004) | ||
| i magnitude | 16.59 (0.005) | 16.59 (0.005) | ||
| z magnitude | 16.82 (0.01) | 16.82 (0.01) | ||
| G magnitude | 16.20 (0.002) | 16.18 (0.003) | ||
| BP magnitude | 16.09 (0.01) | |||
| RP magnitude | 16.28 (0.006) | |||
| Pan g magnitude | 16.07 (0.004) | |||
| Pan r magnitude | 16.35 (0.003) | |||
| Pan i magnitude | 16.61 (0.003) | |||
| Pan z magnitude | 16.84 (0.007) | |||
| Pan y magnitude | 16.92 (0.007) | |||
| E(B-V) | 0.020 | |||
* 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.