WD 0031+141

All names: WD 0031+141, SDSS J003343.04+142251.4, SDSS J003343.05+142251.4, SDSS J003343.06+142251.5, SDSS J003343.08+142251.3, Gaia DR2 2779282202054151808, Gaia DR3 2779282202054151808, EQ J0033+1422, Gaia EDR3 2779282202054151808

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Bedard et al. 2020 MWDD H MWDD HE Gaia DR2 Stilism Hugelmeyer et al. 2006 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 00 33 43.09 (0.08) 00 33 43.05 00 33 43.09 (0.1) 00 33 43.09 00 33 43.06 (0.08) 00 33 43.05 00 33 43.15 00 33 43.06
Declination 14 22 51.37 (0.06) 14 22 51.44 14 22 51.38 (0.1) 14 22 51.37 14 22 51.48 (0.06) 14 22 51.45 14 22 50.16 14 22 51.48
Spectral type DBA DO DO DO DB DBAO DO DO(DBO) DO DB
Effective temperature [K] 40593.0 (1051) 19346.0 23965.0 52500.0 (200) 45584.0 (1479) 15176.0 (114) 50000.0 (50)
log(g) [cgs] 7.77 (0.09) 7.09 7.29 8.20 (0.01) 7.79 (0.09) 8.97 (0.06) 8.24 (0.04)
Mass [M] 0.52 (0.04) 0.281 0.322 0.76 0.542 (0.05)
log(Luminosity) [L] -0.22 (0.07)
Cooling age [Gyr] 0.0037 (0.0006) 0.7181 0.0247
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] 1.95 (0.1) 2.11 (0.2) 1.95 1.95 (0.1)
Distance [pc] 513.11 (29) 473.97 (34) 513.11 513.11 (29)
Composition He
Proper motion (right ascension) [mas/yr] 33.86977705 (0.1) 34.03166137 (0.3) 33.87 (0.1) 34.6
Proper motion (declination) [mas/yr] -6.839982388 (0.1) -6.415693174 (0.2) -6.84 (0.1) -8.4
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.23 (0.008) 17.23 (0.008) 17.25 (0.01) 17.24 17.22 (0.01)
g magnitude 17.55 (0.005) 17.55 (0.005) 17.56 (0.03) 17.56 17.54 (0.03)
r magnitude 17.97 (0.007) 17.97 (0.007) 18.01 (0.03) 18.01 17.99 (0.03)
i magnitude 18.31 (0.009) 18.31 (0.009) 18.33 (0.02) 18.33 18.32 (0.02)
z magnitude 18.60 (0.03) 18.60 (0.03) 18.53 (0.05) 18.53 18.51 (0.05)
G magnitude 17.80 (0.008) 17.83 17.80 17.80 (0.003)
BP magnitude 17.69 (0.008) 17.65
RP magnitude 18.03 (0.02) 18.02
Pan g magnitude 17.64 (0.007)
Pan r magnitude 18.02 (0.005)
Pan i magnitude 18.35 (0.005)
Pan z magnitude 18.59 (0.009)
Pan y magnitude 18.74 (0.02)
E(B-V) 0.048

* Constant surface field

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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.