WD 0857+558
All names: WD 0857+558, GALEX J090047.7+554125, SDSS J090047.64+554126.2, SDSS J090047.64+554126.1, SDSS J090047.63+554126.2, Gaia DR2 1035962810628672896, Gaia DR3 1035962810628672896, GALEX J090047.6+554127, Gaia EDR3 1035962810628672896
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 00 47.46 (0.3) | 09 00 47.64 | 09 00 47.47 (0.4) | 09 00 47.46 | 09 00 47.64 (0.3) | 09 00 47.64 | 09 00 46.54 | 09 00 47.64 | ||||||
| Declination | 55 41 25.07 (0.2) | 55 41 26.22 | 55 41 25.11 (0.4) | 55 41 25.07 | 55 41 26.29 (0.2) | 55 41 26.20 | 55 41 20.76 | 55 41 26.20 | ||||||
| Spectral type | DC | DC | DA | DC | DC | DC | DC | DC | ||||||
| Effective temperature | [K] | 6811.0 | 6593.0 | 7154.0 (335) | 6908.0 (88) | 6661.0 (89) | ||||||||
| log(g) | [cgs] | 7.88 | 7.77 | 8.19 (0.1) | 8.87 (0.1) | 9.98 (0.03) | ||||||||
| Mass | [M☉] | 0.524 | 0.446 | 0.712 (0.1) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 1.3750 | 1.3620 | |||||||||||
| log(H/He) | ||||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | ||||||||||||||
| log(Ca/H) | ||||||||||||||
| Parallax | [mas] | 6.12 (0.4) | 5.43 (0.6) | 6.12 | 6.12 (0.4) | |||||||||
| Distance | [pc] | 163.43 (11) | 184.26 (20) | 163.43 | 163.43 (11) | |||||||||
| Composition | ||||||||||||||
| Proper motion (right ascension) | [mas/yr] | -91.92332901 (0.4) | -92.37710985 (0.8) | -91.923 (0.4) | -90.0 | |||||||||
| Proper motion (declination) | [mas/yr] | -76.06348128 (0.3) | -75.29921945 (0.9) | -76.063 (0.3) | -80.0 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | ||||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 20.37 (0.05) | 20.37 (0.05) | 20.36 (0.06) | 20.37 | 20.37 (0.05) | |||||||||
| g magnitude | 19.94 (0.02) | 19.94 (0.02) | 19.96 (0.03) | 19.95 | 19.96 (0.03) | |||||||||
| r magnitude | 19.59 (0.02) | 19.59 (0.01) | 19.63 (0.02) | 19.64 | 19.63 (0.02) | |||||||||
| i magnitude | 19.66 (0.02) | 19.66 (0.02) | 19.68 (0.03) | 19.68 | 19.68 (0.03) | |||||||||
| z magnitude | 19.73 (0.08) | 19.73 (0.08) | 19.75 (0.08) | 19.75 | 19.75 (0.08) | |||||||||
| G magnitude | 19.71 (0.05) | 19.75 | 19.71 | 19.71 (0.004) | ||||||||||
| BP magnitude | 19.88 (0.05) | 19.89 | ||||||||||||
| RP magnitude | 19.38 (0.05) | 19.44 | ||||||||||||
| Pan g magnitude | 19.90 (0.009) | |||||||||||||
| Pan r magnitude | 19.73 (0.02) | |||||||||||||
| Pan i magnitude | 19.70 (0.01) | |||||||||||||
| Pan z magnitude | 19.72 (0.01) | |||||||||||||
| Pan y magnitude | 19.64 (0.04) | |||||||||||||
| E(B-V) | 0.010 | |||||||||||||
* Constant surface field
Special notes:
Spectra
Controls
Normalize at:
Normalize by mean flux
Range:
x:
to
y:
to
Spectra available:
Spectra without link are available upon request
Absorption lines
Photometric filters
BVRI
ugriz
Photometric fit
