SDSS J081835.86+055041.8
All names: GALEX J081835.9+055042, SDSS J081835.87+055041.9, Gaia DR3 3096406541193396224, Gaia DR2 3096406541193396224, WD 0815+060, Gaia EDR3 3096406541193396224, SDSS J081835.86+055041.8
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 18 35.87 (0.6) | 08 18 35.87 | 08 18 35.87 (0.8) | 08 18 35.87 (0.6) | 08 18 35.87 | 08 18 35.47 | 08 18 35.87 | ||||
| Declination | 05 50 41.64 (0.4) | 05 50 41.83 | 05 50 41.64 (0.5) | 05 50 41.88 (0.4) | 05 50 41.83 | 05 50 35.16 | 05 50 41.86 | ||||
| Spectral type | DA | DA | DA_auto | DA | DA | DA | |||||
| Effective temperature | [K] | 9885.0 | 13105.0 (583) | 13218.0 (731) | |||||||
| log(g) | [cgs] | 7.40 | 7.85 (0.2) | 7.95 (0.2) | |||||||
| Mass | [M☉] | 0.32 | 0.582 (0.1) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.3406 | |||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| log(C/H) | |||||||||||
| log(N/H) | |||||||||||
| log(O/H) | |||||||||||
| log(Na/H) | |||||||||||
| log(Mg/H) | |||||||||||
| log(Al/H) | |||||||||||
| log(Si/H) | |||||||||||
| log(P/H) | |||||||||||
| log(S/H) | |||||||||||
| log(Sc/H) | |||||||||||
| log(Ti/H) | |||||||||||
| log(Cr/H) | |||||||||||
| log(Mn/H) | |||||||||||
| log(Fe/H) | |||||||||||
| log(Ni/H) | |||||||||||
| Parallax | [mas] | 1.44 (0.8) | 1.65 (0.9) | 1.44 (0.8) | |||||||
| Distance | [pc] | 693.98 (388) | 604.65 (338) | 693.96 (388) | |||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -1.214096127 (0.9) | 0.976994094 (2) | -1.214 (0.9) | -5.2 | ||||||
| Proper motion (declination) | [mas/yr] | -15.20837233 (0.6) | -17.1952663 (1) | -15.208 (0.6) | -21.2 | ||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 20.70 (0.08) | 20.69 (0.08) | 20.66 (0.08) | 20.66 | 20.65 (0.08) | ||||||
| g magnitude | 20.16 (0.02) | 20.17 (0.02) | 20.19 (0.03) | 20.19 | 20.19 (0.02) | ||||||
| r magnitude | 20.40 (0.04) | 20.39 (0.04) | 20.43 (0.04) | 20.43 | 20.44 (0.04) | ||||||
| i magnitude | 20.72 (0.07) | 20.73 (0.07) | 20.75 (0.07) | 20.75 | 20.75 (0.07) | ||||||
| z magnitude | 20.30 (0.2) | 20.32 (0.2) | 20.39 (0.2) | 20.39 | 20.38 (0.2) | ||||||
| G magnitude | 20.28 (0.09) | 20.37 | 20.28 (0.007) | ||||||||
| BP magnitude | 20.30 (0.09) | 20.21 | |||||||||
| RP magnitude | 19.97 (0.1) | 20.03 | |||||||||
| Pan g magnitude | |||||||||||
| Pan r magnitude | |||||||||||
| Pan i magnitude | |||||||||||
| Pan z magnitude | |||||||||||
| Pan y magnitude | |||||||||||
| E(B-V) | 0.024 | ||||||||||
* 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
