PB 4071

All names: Gaia EDR3 1247760331033131520, LAMOST J134437.64+183714.3, Gaia DR3 1247760331033131520, GALEX J134437.6+183714, SDSS J134437.65+183714.40, PB 4071, LAMOST J134437.65+183714.3, SDSS J134437.65+183714.3, SDSS J134437.65+183714.4, Gaia DR2 1247760331033131520

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 Vincent et al. 2024 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 13 44 37.68 (0.06) 13 44 37.65 13 44 37.68 (0.08) 13 44 37.68 13 44 37.63 (0.06) 13 44 37.65
Declination 18 37 13.82 (0.05) 18 37 14.37 18 37 13.85 (0.07) 18 37 13.82 18 37 14.65 (0.05) 18 37 14.39
Spectral type DBA DB DBA DBA DB
Effective temperature [K] 14724.0 14324.0 13627.0 14887.0 (30) 14633.0 (274) 15536.0 (86)
log(g) [cgs] 7.99 8.06 7.98 8.00 (0) 8.05 (0.03) 8.54 (0.05)
Mass [M] 0.583 0.625 0.573 0.618 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 0.2568
log(H/He) -5.356 -5.08 (0.09)
log(C/He)
log(Ca/He) <-8.07
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] 7.29 (0.08) 7.42 (0.1) 7.29 7.29 (0.08)
Distance [pc] 137.18 (1) 134.85 (2) 144.00 137.18 137.18 (1)
Composition He
Proper motion (right ascension) [mas/yr] 44.509116 (0.08) 44.12848642 (0.2) 44.509 (0.08)
Proper motion (declination) [mas/yr] -51.84787617 (0.06) -52.03112069 (0.1) -51.848 (0.06)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.00
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 16.93 (0.008) 16.93 (0.008) 16.93 (0.03)
g magnitude 16.99 (0.005) 16.99 (0.005) 17.03 (0.02)
r magnitude 17.26 (0.006) 17.26 (0.006) 17.27 (0.03)
i magnitude 17.50 (0.007) 17.50 (0.007) 17.49 (0.02)
z magnitude 17.73 (0.02) 17.73 (0.02) 17.74 (0.03)
G magnitude 17.09 (0.004) 17.13 17.09 17.09 (0.003)
BP magnitude 17.06 (0.004) 17.00
RP magnitude 17.18 (0.008) 17.18
Pan g magnitude 17.02 (0.003)
Pan r magnitude 17.25 (0.004)
Pan i magnitude 17.50 (0.003)
Pan z magnitude 17.70 (0.004)
Pan y magnitude 17.84 (0.01)
E(B-V) 0.009

* 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.