All names: SDSS J084121.92+372619.6, WD 0838+376, Gaia DR2 909935997578623488, Gaia EDR3 909935997578623488, [HB93] 0838+376, Gaia DR3 909935997578623488, CSO 200, KUV 08387+3737, SDSS J084121.92+372619.68, SDSS J084121.93+372619.9, GALEX J084121.9+372620, LAMOST J084121.92+372619.7, KUV 08381+3737
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | SDSS DR10 | MWDD H | Gaia DR2 | Stilism | Kepler et al. 2015 | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 41 21.92 (0.06) | 08 41 21.93 | 08 41 21.93 | 08 41 21.92 (0.08) | 08 41 21.92 | 08 41 21.94 (0.06) | 08 41 21.10 | |||||||
Declination | 37 26 19.49 (0.04) | 37 26 19.92 | 37 26 19.92 | 37 26 19.50 (0.05) | 37 26 19.49 | 37 26 19.94 (0.04) | 37 26 16.80 | |||||||
Spectral type | DA | DA | DA | DA | DA2.5 | DA | DA | |||||||
Effective temperature | [K] | 17537.0 | 20587.0 (71) | 19780.0 (337) | 19226.0 (487) | |||||||||
log(g) | [cgs] | 7.80 | 8.03 (0.01) | 7.94 (0.05) | 7.90 (0.03) | |||||||||
Mass | [M☉] | 0.511 | 0.639 (0.005) | 0.59 (0.03) | 0.568 (0.02) | |||||||||
log(Luminosity) | [L☉] | |||||||||||||
Cooling age | [Gyr] | 0.0787 | ||||||||||||
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] | 5.51 (0.08) | 5.50 (0.1) | 5.51 | 5.51 (0.08) | |||||||||
Distance | [pc] | 181.64 (3) | 181.95 (4) | 182.00 | 181.64 | 181.64 (3) | ||||||||
Composition | H | H | ||||||||||||
Proper motion (right ascension) | [mas/yr] | -16.03719747 (0.07) | -16.0094996 (0.2) | -16.037 (0.07) | ||||||||||
Proper motion (declination) | [mas/yr] | -28.35360665 (0.06) | -28.31330779 (0.1) | -28.354 (0.06) | ||||||||||
Variability | ||||||||||||||
Magnetic | ||||||||||||||
Bd | [MG] | |||||||||||||
Infrared excess (disk) | ||||||||||||||
Binarity | ||||||||||||||
B magnitude | ||||||||||||||
V magnitude | 16.99 | |||||||||||||
R magnitude | ||||||||||||||
I magnitude | ||||||||||||||
J magnitude | ||||||||||||||
H magnitude | ||||||||||||||
K magnitude | ||||||||||||||
u magnitude | 16.93 (0.008) | 16.93 (0.008) | 16.92 (0.02) | 16.93 (0.008) | ||||||||||
g magnitude | 16.82 (0.005) | 16.82 (0.005) | 16.84 (0.01) | 16.82 (0.005) | ||||||||||
r magnitude | 17.18 (0.005) | 17.18 (0.005) | 17.17 (0.02) | 17.18 (0.005) | ||||||||||
i magnitude | 17.48 (0.006) | 17.48 (0.006) | 17.47 (0.02) | 17.48 (0.006) | ||||||||||
z magnitude | 17.77 (0.02) | 17.77 (0.02) | 17.77 (0.03) | 17.77 (0.02) | ||||||||||
G magnitude | 17.02 (0.006) | 17.05 | 17.02 | 17.02 (0.003) | ||||||||||
BP magnitude | 16.96 (0.006) | 16.94 | ||||||||||||
RP magnitude | 17.19 (0.007) | 17.20 | ||||||||||||
Pan g magnitude | 16.87 (0.003) | |||||||||||||
Pan r magnitude | 17.22 (0.004) | |||||||||||||
Pan i magnitude | 17.51 (0.002) | |||||||||||||
Pan z magnitude | 17.75 (0.005) | |||||||||||||
Pan y magnitude | 17.92 (0.02) | |||||||||||||
E(B-V) | 0.009 |
* 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.