WD 0340-075

All names: SDSS J034227.62-072213.2, SDSS J034227.62-072213.20, Gaia DR3 3243887269938043904, EQ J0342-0722, GALEX J034227.6-072212, WD 0340-075, SDSS J034227.63-072213.3, SDSS J034227.63-072213.2, Gaia DR2 3243887269938043904, Gaia EDR3 3243887269938043904, WDJ034227.62-072213.27, 6dFGS gJ034227.6-072213

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Kilic et al. 2026a Bedard et al. 2020 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD H Gaia DR2 Stilism Hugelmeyer et al. 2006 Harris et al. 2003 Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 03 42 27.65 (0.09) 03 42 27.63 03 42 27.65 (0.1) 03 42 27.65 03 42 27.62 (0.09) 03 42 27.63 03 42 26.57 03 42 27.63
Declination -07 22 13.40 (0.08) -07 22 13.24 -07 22 13.40 (0.09) -07 22 13.40 -07 22 13.27 (0.08) -07 22 13.25 -07 22 11.28 -07 22 13.25
Spectral type DO DOA DO DO DO DB DO DO DO DBAH: DB
Effective temperature [K] 47263.0 48583.0 (228) 48925.0 46888.0 25174.0 50000.0 (200) 53975.0 (17342) 40000.0 (32) 50000.0 (50)
log(g) [cgs] 7.92 (0.06) 8.21 (0.08) 7.93 8.02 7.40 8.00 (0.03) 8.06 (2) 7.00 (0.01) 8.41 (0.02)
Mass [M] 0.605 (0.04) 0.76 (0.05) 0.615 0.652 0.382 0.65 0.689 (40)
log(Luminosity) [L] -0.19 (0.05)
Cooling age [Gyr] 0.0021 (0.0001) 0.0162
log(H/He) -1.0 -2.328
log(C/He)
log(Ca/He)
log(Ca/H)
log(Li/He)
log(Be/He)
log(B/He)
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(K/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] 1.87 (0.1) 2.02 (0.2) 1.87 1.87 (0.1)
Distance [pc] 534.31 (33) 495.80 (41) 534.31 534.30 (33)
Composition He He
Proper motion (right ascension) [mas/yr] 21.55590079 (0.1) 21.4389364 (0.2) 21.556 (0.1) 2.2
Proper motion (declination) [mas/yr] -8.315354632 (0.1) -8.454243635 (0.2) -8.315 (0.1) -4.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.20
V magnitude 17.88
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.26 (0.008) 17.28 17.26 (0.008) 17.29 (0.01) 17.29 17.28 (0.01)
g magnitude 17.64 (0.005) 17.64 17.64 (0.005) 17.65 (0.02) 17.64 17.67 (0.02)
r magnitude 18.13 (0.007) 18.12 18.12 (0.007) 18.11 (0.01) 18.13 18.14 (0.01)
i magnitude 18.48 (0.01) 18.48 18.48 (0.01) 18.48 (0.02) 18.49 18.48 (0.02)
z magnitude 18.81 (0.05) 18.81 18.81 (0.05) 18.80 (0.05) 18.81 18.80 (0.05)
G magnitude 17.87 (0.01) 17.90 17.87 17.87 (0.003)
BP magnitude 17.74 (0.01) 17.67
RP magnitude 18.13 (0.03) 18.10
Pan g magnitude 17.71 (0.008)
Pan r magnitude 18.11 (0.005)
Pan i magnitude 18.47 (0.008)
Pan z magnitude 18.72 (0.03)
Pan y magnitude 18.94 (0.02)
E(B-V) 0.041

* 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.