SDSS J084048.38+342058.8
All names: SDSS J084048.38+342058.8, Gaia DR2 711207482835738880, SDSS J084048.39+342058.8, LAMOST J084048.38+342058.8, GALEX J084048.3+342058, SDSS J084048.39+342058.9, Gaia DR3 711207482835738880, WD 0837+345, Gaia EDR3 711207482835738880
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 40 48.39 (0.2) | 08 40 48.39 | 08 40 48.39 (0.3) | 08 40 48.39 (0.2) | 08 40 48.39 | 08 40 47.93 | 08 40 48.39 | |||||||
| Declination | 34 20 58.66 (0.1) | 34 20 58.83 | 34 20 58.67 (0.2) | 34 20 58.88 (0.1) | 34 20 58.85 | 34 20 54.60 | 34 20 58.86 | |||||||
| Spectral type | DA | DA? | DA | DA | DA_auto | DA | DA | DA | ||||||
| Effective temperature | [K] | 18505.0 | 28040.0 (650) | 27184.0 (396) | 27436.0 (478) | |||||||||
| log(g) | [cgs] | 7.41 | 7.64 (0.1) | 7.69 (0.08) | 7.68 (0.08) | |||||||||
| Mass | [M☉] | 0.36 | 0.47 (0.04) | 0.499 (0.04) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.0402 | 0.0123 | |||||||||||
| 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] | 1.15 (0.3) | 1.59 (0.4) | 1.15 (0.3) | ||||||||||
| Distance | [pc] | 872.64 (244) | 628.99 (162) | 872.68 (244) | ||||||||||
| Composition | H | H | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | 4.107419804 (0.3) | 3.939239594 (0.6) | 4.107 (0.3) | 1.1 | |||||||||
| Proper motion (declination) | [mas/yr] | -13.22370001 (0.2) | -13.55610613 (0.3) | -13.224 (0.2) | -11.5 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | ||||||||||||||
| V magnitude | ||||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | ||||||||||||||
| H magnitude | ||||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 18.72 (0.02) | 18.72 (0.02) | 18.68 (0.02) | 18.67 | 18.70 (0.02) | |||||||||
| g magnitude | 18.82 (0.008) | 18.81 (0.008) | 18.81 (0.01) | 18.80 | 18.83 (0.01) | |||||||||
| r magnitude | 19.23 (0.01) | 19.23 (0.01) | 19.22 (0.02) | 19.21 | 19.22 (0.02) | |||||||||
| i magnitude | 19.52 (0.02) | 19.52 (0.02) | 19.50 (0.03) | 19.49 | 19.51 (0.03) | |||||||||
| z magnitude | 19.99 (0.08) | 19.99 (0.08) | 19.98 (0.08) | 19.96 | 19.99 (0.08) | |||||||||
| G magnitude | 19.03 (0.02) | 19.07 | 19.03 (0.003) | |||||||||||
| BP magnitude | 18.97 (0.02) | 18.89 | ||||||||||||
| RP magnitude | 19.21 (0.04) | 19.17 | ||||||||||||
| Pan g magnitude | 18.88 (0.007) | |||||||||||||
| Pan r magnitude | 19.25 (0.01) | |||||||||||||
| Pan i magnitude | 19.58 (0.009) | |||||||||||||
| Pan z magnitude | 19.81 (0.04) | |||||||||||||
| Pan y magnitude | 19.87 (0.04) | |||||||||||||
| 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
