WD 1436-003

All names: GALEX J143903.9-003119, SDSS J143903.93-003119.4, SDSS J143903.94-003119.4, WD 1436-003, 2QZ J143903.9-003120, Gaia DR3 3650089192140232704, Gaia EDR3 3650089192140232704, SDSS J143903.94-003119.40, SDSS J143903.93-003119.5, Gaia DR2 3650089192140232704

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Harris et al. 2003 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 14 39 03.92 (0.5) 14 39 03.93 14 39 03.92 (0.7) 14 39 03.93 (0.5) 14 39 03.93 14 39 03.07 14 39 03.94
Declination -00 31 19.35 (0.6) -00 31 19.42 -00 31 19.35 (1) -00 31 19.42 (0.6) -00 31 19.43 -00 31 18.12 -00 31 19.41
Spectral type DB4 DB4 DB4 DB DB3.2 DB DB
Effective temperature [K] 15148.0 19014.0 14390.0 16143.0 (300) 15706.0 (299)
log(g) [cgs] 7.73 7.63 7.26 7.91 (0.2) 7.91 (0.2)
Mass [M] 0.449 0.415 0.277 0.534 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.1059
log(H/He) <-5.962
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] 2.05 (0.6) 1.38 (1) 2.05 (0.6)
Distance [pc] 487.83 (150) 723.62 (581) 487.83 (150)
Composition He
Proper motion (right ascension) [mas/yr] -16.99006386 (0.6) -16.88824189 (2) -16.99 (0.6) -19.2
Proper motion (declination) [mas/yr] 4.447003751 (0.6) 4.35390207 (2) 4.447 (0.6) 0.1
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.36 (0.02) 19.38 19.38 (0.03) 19.38 (0.03) 19.38 19.37 (0.03)
g magnitude 19.49 (0.01) 19.51 19.49 (0.01) 19.51 (0.03) 19.51 19.50 (0.03)
r magnitude 19.78 (0.02) 19.78 19.79 (0.02) 19.79 (0.03) 19.78 19.78 (0.03)
i magnitude 20.02 (0.03) 20.01 20.01 (0.03) 20.01 (0.03) 20.01 20.01 (0.03)
z magnitude 20.32 (0.1) 20.29 20.31 (0.1) 20.30 (0.1) 20.29 20.31 (0.1)
G magnitude 19.61 (0.05) 19.64 19.61 (0.006)
BP magnitude 19.55 (0.05) 19.80
RP magnitude 19.82 (0.1) 20.04
Pan g magnitude 19.52 (0.02)
Pan r magnitude 19.73 (0.01)
Pan i magnitude 20.01 (0.01)
Pan z magnitude 20.25 (0.02)
Pan y magnitude 20.05 (0.1)
E(B-V) 0.042

* 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.