WD 0015+004

All names: SDSS J001742.44+004137.3, Gaia EDR3 2545579360599665792, GALEX J001742.4+004138, 0015+004, SDSS J001742.43+004137.2, SDSS J001742.44+004137.40, WD 0015+004, SDSS J001742.44+004137.4, Gaia DR2 2545579360599665792, PB 5847, SDSS J001742.43+004137.0, SDSS J001742.43+004137.3, Gaia DR3 2545579360599665792

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023b Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) Leggett et al. 2018 MWDD HE Gaia DR2 Stilism Ferrario et al. 2015 Harris et al. 2003 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 00 17 42.42 (0.07) 00 17 42.44 00 17 42.42 (0.09) 00 17 42.42 00 17 42.44 (0.07) 00 17 41.81 00 17 42.44
Declination 00 41 36.92 (0.05) 00 41 37.32 00 41 36.94 (0.06) 00 41 36.92 00 41 37.36 (0.05) 00 41 33.72 00 41 37.41
Spectral type DBH DBP3.5 DB DB DBH DB DBH DBH DBH DB
Effective temperature [K] 13781.5 (207) 12100.0 14515.0 14532.0 (580) 13584.0 15000.0 14542.0 (272) 12600.0 (180)
log(g) [cgs] 8.05 (0.04) 7.92 8.12 8.05 (0.07) 8.03 8.12 (0.02) 8.97 (0.2)
Mass [M] 0.619355751 (0.05) 0.537 0.661 0.621 (0.06) 0.607 0.662 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.2400 (0.04) 0.2841
log(H/He) <-6.545
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] 7.88 (0.08) 7.55 (0.4) 7.91 (0.1) 7.88 7.88 (0.08)
Distance [pc] 126.95 (1) 132.45 (8) 126.39 (2) 126.95 126.96 (1)
Composition He
Proper motion (right ascension) [mas/yr] -16.98839369 (0.09) -16.46349808 (0.2) -16.988 (0.09)
Proper motion (declination) [mas/yr] -27.22231158 (0.08) -26.80941553 (0.1) -27.222 (0.08)
Variability
Magnetic yes yes yes yes
Bd [MG] 8.170543053 (0.1) 8.3
Infrared excess (disk)
Binarity
B magnitude 17.00
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.83 (0.007) 16.87 16.83 (0.007) 16.87 16.86 (0.04)
g magnitude 16.90 (0.005) 16.93 16.90 (0.005) 16.93 16.92 (0.02)
r magnitude 17.18 (0.006) 17.18 17.18 (0.006) 17.18 17.19 (0.02)
i magnitude 17.42 (0.007) 17.42 17.42 (0.007) 17.42 17.42 (0.02)
z magnitude 17.63 (0.02) 17.64 17.63 (0.01) 17.64 17.67 (0.02)
G magnitude 17.05 (0.005) 17.07 17.05 17.05 (0.003)
BP magnitude 17.01 (0.005) 16.96
RP magnitude 17.11 (0.009) 17.10
Pan g magnitude 16.97 (0.005)
Pan r magnitude 17.20 (0.002)
Pan i magnitude 17.45 (0.005)
Pan z magnitude 17.65 (0.006)
Pan y magnitude 17.79 (0.01)
E(B-V) 0.005

* 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.