SDSS J084008.72+325114.6
All names: Gaia EDR3 710268018869836928, SDSS J084008.72+325114.5, WD 0837+330, SDSS J084008.72+325114.6, GALEX J084008.7+325114, Gaia DR2 710268018869836928, Gaia DR3 710268018869836928
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | MWDD H | Gaia DR2 | Stilism | Hugelmeyer et al. 2006 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 40 08.71 (0.2) | 08 40 08.72 | 08 40 08.71 (0.3) | 08 40 08.72 (0.2) | 08 40 08.72 | 08 40 08.06 | 08 40 08.72 | ||||||
| Declination | 32 51 14.48 (0.09) | 32 51 14.57 | 32 51 14.48 (0.1) | 32 51 14.61 (0.09) | 32 51 14.56 | 32 51 08.64 | 32 51 14.56 | ||||||
| Spectral type | DOZ | DO | DO | DO | DO | DO | DO | ||||||
| Effective temperature | [K] | 80224.0 (8371) | 29322.0 | 85000.0 (1100) | 100000.0 (1190) | 99605.0 (2559) | |||||||
| log(g) | [cgs] | 8.53 (0.4) | 7.35 | 8.40 (0.08) | 5.02 (0.03) | 5.06 (0.07) | |||||||
| Mass | [M☉] | 0.97 (0.2) | 0.381 | 0.9 | |||||||||
| log(Luminosity) | [L☉] | 0.47 (0.4) | |||||||||||
| Cooling age | [Gyr] | 0.0004 (0.0001) | 0.0103 | ||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| log(N/He) | |||||||||||||
| log(O/He) | |||||||||||||
| log(Na/He) | |||||||||||||
| log(Mg/He) | |||||||||||||
| log(Al/He) | |||||||||||||
| log(Si/He) | |||||||||||||
| log(P/He) | |||||||||||||
| log(S/He) | |||||||||||||
| log(Cl/He) | |||||||||||||
| log(Sc/He) | |||||||||||||
| log(Ti/He) | |||||||||||||
| log(V/He) | |||||||||||||
| log(Cr/He) | |||||||||||||
| log(Mn/He) | |||||||||||||
| log(Fe/He) | |||||||||||||
| log(Co/He) | |||||||||||||
| log(Ni/He) | |||||||||||||
| log(Cu/He) | |||||||||||||
| log(Zn/He) | |||||||||||||
| log(Ga/He) | |||||||||||||
| log(Ge/He) | |||||||||||||
| log(Sr/He) | |||||||||||||
| Parallax | [mas] | 0.53 (0.3) | 1.01 (0.4) | 0.53 (0.3) | |||||||||
| Distance | [pc] | 1895.92 (942) | 991.45 (360) | 1896.09 (942) | |||||||||
| Composition | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -4.812307172 (0.2) | -4.210478378 (0.5) | -4.812 (0.2) | -2.4 | ||||||||
| Proper motion (declination) | [mas/yr] | -8.170209807 (0.2) | -7.92595828 (0.3) | -8.17 (0.2) | -1.5 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 18.20 | ||||||||||||
| V magnitude | 18.93 | ||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | |||||||||||||
| H magnitude | |||||||||||||
| K magnitude | |||||||||||||
| u magnitude | 18.15 (0.01) | 18.15 (0.01) | 18.18 (0.01) | 18.17 | 18.16 (0.01) | ||||||||
| g magnitude | 18.67 (0.008) | 18.67 (0.008) | 18.67 (0.02) | 18.67 | 18.67 (0.02) | ||||||||
| r magnitude | 19.15 (0.01) | 19.15 (0.01) | 19.16 (0.02) | 19.16 | 19.17 (0.02) | ||||||||
| i magnitude | 19.54 (0.02) | 19.54 (0.03) | 19.53 (0.03) | 19.53 | 19.54 (0.03) | ||||||||
| z magnitude | 19.91 (0.1) | 19.91 (0.1) | 19.88 (0.1) | 19.88 | 19.90 (0.1) | ||||||||
| G magnitude | 18.91 (0.01) | 18.95 | 18.91 (0.003) | ||||||||||
| BP magnitude | 18.75 (0.01) | 18.62 | |||||||||||
| RP magnitude | 19.26 (0.04) | 19.15 | |||||||||||
| Pan g magnitude | 18.72 (0.008) | ||||||||||||
| Pan r magnitude | 19.19 (0.01) | ||||||||||||
| Pan i magnitude | 19.57 (0.03) | ||||||||||||
| Pan z magnitude | 19.85 (0.01) | ||||||||||||
| Pan y magnitude | 19.84 (0.05) | ||||||||||||
| E(B-V) | 0.025 | ||||||||||||
* 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
