WD 0747+437

All names: GALEX J075033.9+433653, SDSS J075033.94+433652.8, SDSS J075033.95+433652.90, Gaia EDR3 925915096986154112, SDSS J075033.95+433652.8, SDSS J075033.95+433652.9, Gaia DR3 925915096986154112, WD 0747+437, Gaia DR2 925915096986154112

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 07 50 33.94 (0.4) 07 50 33.95 07 50 33.94 (0.5) 07 50 33.95 (0.4) 07 50 33.95 07 50 32.47 07 50 33.95
Declination 43 36 52.40 (0.3) 43 36 52.89 43 36 52.42 (0.5) 43 36 52.95 (0.3) 43 36 52.88 43 36 46.08 43 36 52.88
Spectral type DB DB DB DB3.5 DB DB
Effective temperature [K] 13682.0 12925.0 11460.0 14845.0 (359) 13722.0 (407)
log(g) [cgs] 8.05 7.88 7.76 8.63 (0.2) 8.16 (0.3)
Mass [M] 0.619 0.519 0.456 0.677 (0.2)
log(Luminosity) [L]
Cooling age [Gyr] 0.3195
log(H/He) <-6.101
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] 2.17 (0.5) 2.09 (0.8) 2.17 (0.5)
Distance [pc] 461.44 (102) 477.69 (171) 461.45 (102)
Composition He
Proper motion (right ascension) [mas/yr] -8.764986839 (0.5) -8.006346425 (1) -8.765 (0.5) -0.3
Proper motion (declination) [mas/yr] -33.9448427 (0.3) -34.50137785 (0.7) -33.945 (0.3) -39.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.94 (0.04) 19.94 (0.04) 19.91 (0.04) 19.92 19.93 (0.04)
g magnitude 19.89 (0.02) 19.89 (0.02) 19.89 (0.02) 19.89 19.91 (0.02)
r magnitude 20.11 (0.02) 20.11 (0.02) 20.11 (0.03) 20.11 20.10 (0.03)
i magnitude 20.26 (0.03) 20.25 (0.03) 20.24 (0.04) 20.25 20.24 (0.04)
z magnitude 20.59 (0.2) 20.59 (0.2) 20.52 (0.2) 20.51 20.51 (0.2)
G magnitude 19.97 (0.05) 20.02 19.97 (0.006)
BP magnitude 20.12 (0.05) 19.98
RP magnitude 19.83 (0.07) 20.04
Pan g magnitude 19.94 (0.02)
Pan r magnitude 20.09 (0.01)
Pan i magnitude 20.29 (0.01)
Pan z magnitude 20.44 (0.07)
Pan y magnitude 20.54 (0.2)
E(B-V) 0.031

* 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.