WD 1338+009

All names: Gaia DR3 3663222686735694080, SDSS J134120.88+004204.7, 2QZ J134120.8+004204, SDSS J134120.87+004204.7, SDSS J134120.88+004204.70, WD 1338+009, GALEX J134120.9+004205, Gaia EDR3 3663222686735694080, Gaia DR2 3663222686735694080

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 13 41 20.90 (0.4) 13 41 20.88 13 41 20.90 (1) 13 41 20.88 (0.4) 13 41 20.88 13 41 19.37 13 41 20.88
Declination 00 42 04.59 (0.4) 00 42 04.72 00 42 04.60 (0.5) 00 42 04.78 (0.4) 00 42 04.75 00 41 57.84 00 42 04.66
Spectral type DB4 DB4 DB4 DB DB3.3 DB DB
Effective temperature [K] 14771.0 15365.0 12518.0 15380.0 (324) 14408.0 (325)
log(g) [cgs] 7.68 8.76 8.49 8.14 (0.2) 7.89 (0.2)
Mass [M] 0.426 1.064 0.898 0.522 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.7233
log(H/He) -4.416
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] 2.81 (0.6) 3.47 (1) 2.81 (0.6)
Distance [pc] 355.93 (72) 288.42 (113) 355.92 (72)
Composition He
Proper motion (right ascension) [mas/yr] 20.02947616 (0.7) 18.727907 (1) 20.029 (0.7)
Proper motion (declination) [mas/yr] -11.93708855 (0.5) -10.15128749 (0.9) -11.937 (0.5)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.83
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.62 (0.03) 19.68 19.62 (0.03) 19.69 (0.03) 19.68 19.70 (0.03)
g magnitude 19.70 (0.01) 19.74 19.70 (0.01) 19.74 (0.02) 19.74 19.73 (0.02)
r magnitude 19.98 (0.02) 19.96 19.98 (0.02) 19.97 (0.02) 19.96 19.96 (0.02)
i magnitude 20.21 (0.04) 20.22 20.21 (0.04) 20.20 (0.04) 20.21 20.20 (0.04)
z magnitude 20.34 (0.1) 20.30 20.34 (0.1) 20.30 (0.1) 20.30 20.30 (0.1)
G magnitude 19.83 (0.06) 19.88 19.83 (0.005)
BP magnitude 19.75 (0.06) 19.93
RP magnitude 19.99 (0.08) 19.84
Pan g magnitude 19.76 (0.009)
Pan r magnitude 19.99 (0.02)
Pan i magnitude 20.21 (0.05)
Pan z magnitude 20.42 (0.04)
Pan y magnitude
E(B-V) 0.027

* 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.