WD 0138-013

All names: GALEX J014048.9-010303, SDSS J014049.00-010302.8, Gaia DR2 2508932844203195136, Gaia DR3 2508932844203195136, WD 0138-013, SDSS J014049.00-010302.70, SDSS J014048.99-010302.7, SDSS J014049.00-010302.7, SDSS J014048.99-010302.8, Gaia EDR3 2508932844203195136

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 01 40 49.00 (0.2) 01 40 49.00 01 40 49.00 (0.5) 01 40 49.01 (0.2) 01 40 49.00 01 40 49.18 01 40 49.00
Declination -01 03 02.83 (0.2) -01 03 02.80 -01 03 02.83 (0.3) -01 03 02.77 (0.2) -01 03 02.74 -01 02 56.76 -01 03 02.74
Spectral type DB DB2 DB DB2.6 DB DB
Effective temperature [K] 19493.0 15850.0 14064.0 18848.0 (137) 19193.0 (417) 19281.0 (531)
log(g) [cgs] 8.10 6.48 6.04 7.89 (0.06) 8.15 (0.1) 8.15 (0.1)
Mass [M] 0.658 0.161 0.072
log(Luminosity) [L]
Cooling age [Gyr]
log(H/He) <-5.28 <-4.45
log(C/He)
log(Ca/He) <-5.29
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] 2.57 (0.3) 0.90 (0.6) 2.57 (0.3)
Distance [pc] 389.62 (49) 1114.97 (730) 472.00 389.62 (49)
Composition He
Proper motion (right ascension) [mas/yr] -7.756022506 (0.4) -3.888332413 (0.7) -7.756 (0.4) 3.0
Proper motion (declination) [mas/yr] -4.098655442 (0.2) -2.210148722 (0.5) -4.099 (0.2) -0.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.82 (0.02) 18.82 (0.02) 18.87 (0.02) 18.90 18.86 (0.02)
g magnitude 18.89 (0.009) 18.89 (0.009) 18.95 (0.01) 18.95 18.92 (0.02)
r magnitude 19.18 (0.01) 19.18 (0.01) 19.19 (0.02) 19.18 19.15 (0.02)
i magnitude 19.41 (0.02) 19.41 (0.02) 19.49 (0.03) 19.54 19.45 (0.03)
z magnitude 19.56 (0.06) 19.56 (0.06) 19.70 (0.07) 19.70 19.67 (0.07)
G magnitude 19.06 (0.02) 19.09 19.06 (0.004)
BP magnitude 18.95 (0.02) 18.96
RP magnitude 19.14 (0.04) 19.11
Pan g magnitude 18.89 (0.007)
Pan r magnitude 19.16 (0.01)
Pan i magnitude 19.42 (0.009)
Pan z magnitude 19.60 (0.02)
Pan y magnitude 19.60 (0.07)
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.