All names: SDSS J084131.54+332915.6, Gaia DR2 710392886455231360, J0841+3329, SDSS J084131.55+332915.5, Gaia DR3 710392886455231360, WDJ084131.55+332915.47, Gaia EDR3 710392886455231360, SDSS J084131.55+332915.6, WD 0838+336, GALEX J084131.5+332918
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Kilic et al. 2025 | Caron et al. 2023 | Coutu et al. 2019 | Gaia DR2 | Stilism | Koester et al. 2006 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 08 41 31.51 (0.5) | 08 41 31.55 | 08 41 31.55 | 08 41 31.51 (0.6) | 08 41 31.51 | 08 41 31.56 (0.5) | 08 41 31.51 | 08 41 31.73 | 08 41 31.55 | |||||||
Declination | 33 29 16.44 (0.3) | 33 29 15.57 | 33 29 15.47 | 33 29 16.41 (0.4) | 33 29 16.44 | 33 29 15.48 (0.3) | 33 29 16.41 | 33 29 09.96 | 33 29 15.55 | |||||||
Spectral type | DQ | DQ | DQ | DQ | DQ | DQ | DQ7.4 | DQ | DQ | |||||||
Effective temperature | [K] | 6650.0 (56) | 6706.0 (53) | 6937.0 (110) | 6810.0 | 7307.0 (49) | 6476.0 (33) | |||||||||
log(g) | [cgs] | 8.15 (0.06) | 8.66 (0.04) | 8.71 | 8.00 (0) | 8.30 (0.06) | 10.00 (0.002) | |||||||||
Mass | [M☉] | 0.665 (0.05) | 1.006 (0.04) | 1.0336 | 0.77 (0.05) | |||||||||||
log(Luminosity) | [L☉] | |||||||||||||||
Cooling age | [Gyr] | 4.3600 | 4.0800 | |||||||||||||
log(H/He) | ||||||||||||||||
log(C/He) | -6.57 | -6.46 | -6.1593 (0.07) | -6.62 (0.05) | ||||||||||||
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] | 12.97 (0.7) | 18.80 (0.9) | 18.80 | 18.80 (0.9) | 12.97 | 12.97 (0.7) | 18.80 (0.9) | ||||||||
Distance | [pc] | 77.11 (4) | 53.19 (3) | 53.18 (3) | 53.18 (3) | 77.11 | 77.11 (4) | 53.18 (3) | ||||||||
Composition | He | He | He | He | ||||||||||||
Proper motion (right ascension) | [mas/yr] | -37.78951102 (0.7) | -31.93031248 (1) | -37.79 (0.7) | -31.93031248 | |||||||||||
Proper motion (declination) | [mas/yr] | 59.72840558 (0.6) | 60.65061564 (0.8) | 59.728 (0.6) | 60.65061564 | |||||||||||
Variability | ||||||||||||||||
Magnetic | ||||||||||||||||
Bd | [MG] | |||||||||||||||
Infrared excess (disk) | ||||||||||||||||
Binarity | ||||||||||||||||
B magnitude | 18.29 | |||||||||||||||
V magnitude | 18.36 | |||||||||||||||
R magnitude | ||||||||||||||||
I magnitude | ||||||||||||||||
J magnitude | 17.70 (0.05) | |||||||||||||||
H magnitude | ||||||||||||||||
K magnitude | ||||||||||||||||
u magnitude | 18.91 (0.02) | 18.92 (0.02) | 18.91 (0.02) | 18.92 (0.02) | 18.89 (0.02) | |||||||||||
g magnitude | 18.45 (0.007) | 18.45 (0.007) | 18.46 (0.007) | 18.47 (0.02) | ||||||||||||
r magnitude | 18.29 (0.008) | 18.29 (0.008) | 18.30 (0.007) | 18.29 (0.02) | ||||||||||||
i magnitude | 18.27 (0.009) | 18.27 (0.009) | 18.25 (0.009) | 18.28 (0.02) | ||||||||||||
z magnitude | 18.33 (0.02) | 18.33 (0.02) | 18.29 (0.02) | 18.32 (0.03) | ||||||||||||
G magnitude | 18.44 (0.01) | 18.37 | 18.44 | 18.44 (0.005) | 18.37 | |||||||||||
BP magnitude | 18.42 (0.01) | 18.43 | 18.43 | |||||||||||||
RP magnitude | 17.96 (0.02) | 17.92 | 17.92 | |||||||||||||
Pan g magnitude | 18.46 (0.01) | 18.46 (0.01) | ||||||||||||||
Pan r magnitude | 18.31 (0.006) | 18.31 (0.006) | ||||||||||||||
Pan i magnitude | 18.31 (0.004) | 18.31 (0.004) | ||||||||||||||
Pan z magnitude | 18.36 (0.008) | 18.36 (0.008) | ||||||||||||||
Pan y magnitude | 18.39 (0.01) | 18.39 (0.01) | ||||||||||||||
E(B-V) | 0.002 |
* 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.