WD 0754+402

All names: SDSS J075723.93+400714.8, SDSS J075723.93+400714.7, Gaia DR2 920608411490156032, Gaia EDR3 920608411490156032, GALEX J075723.9+400715, Gaia DR3 920608411490156032, KUV 07540+4015, WD 0754+402

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Tremblay et al. 2011 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Kleinman et al. 2004 Vincent et al. 2023
Right ascension 07 57 23.90 (0.08) 07 57 23.94 07 57 23.90 (0.1) 07 57 23.90 07 57 23.94 (0.08) 07 57 23.93 07 57 24.12 07 57 23.93 07 57 23.93
Declination 40 07 14.74 (0.07) 40 07 14.80 40 07 14.74 (0.09) 40 07 14.74 40 07 14.77 (0.07) 40 07 14.79 40 07 13.44 40 07 14.76 40 07 14.77
Spectral type DA DA DA DA DA2.6 DA DA DA DA
Effective temperature [K] 17050.0 19720.0 (484) 20050.0 (230) 18768.0 (890) 19459.0 (150) 19542.0 (174) 19874.0 (219)
log(g) [cgs] 7.90 7.98 (0.08) 7.92 (0.04) 7.99 (0.05) 7.86 (0.02) 7.89 (0.03) 7.92 (0.03)
Mass [M] 0.564 0.61 (0.04) 0.58 (0.02) 0.616 (0.04) 0.567 (0.01)
log(Luminosity) [L]
Cooling age [Gyr] 0.1074 0.0589
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 4.31 (0.1) 4.35 (0.1) 4.31 4.31 (0.1)
Distance [pc] 231.96 (5) 229.77 (7) 154.00 231.96 231.96 (5)
Composition H H H
Proper motion (right ascension) [mas/yr] -30.39535957 (0.1) -30.55302846 (0.2) -30.395 (0.1) -31.0 -30.0
Proper motion (declination) [mas/yr] -2.018387863 (0.07) -1.829265274 (0.2) -2.018 (0.07) -3.4 -3.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 16.80
V magnitude 16.70
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.64 (0.009) 17.63 (0.009) 17.62 (0.02) 17.62 17.63 (0.02) 17.62 (0.02)
g magnitude 17.57 (0.005) 17.56 (0.005) 17.55 (0.01) 17.55 17.56 (0.01) 17.55 (0.01)
r magnitude 17.90 (0.006) 17.90 (0.006) 17.91 (0.02) 17.92 17.92 (0.02) 17.92 (0.02)
i magnitude 18.18 (0.009) 18.18 (0.009) 18.18 (0.02) 18.17 18.19 (0.02) 18.17 (0.02)
z magnitude 18.48 (0.03) 18.48 (0.03) 18.48 (0.03) 18.46 18.49 (0.03) 18.46 (0.03)
G magnitude 17.74 (0.009) 17.76 17.74 17.74 (0.003)
BP magnitude 17.68 (0.009) 17.65
RP magnitude 17.90 (0.02) 17.88
Pan g magnitude 17.60 (0.004)
Pan r magnitude 17.91 (0.003)
Pan i magnitude 18.21 (0.003)
Pan z magnitude 18.44 (0.009)
Pan y magnitude 18.71 (0.07)
E(B-V) 0.017

* 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.