WD 1439+001

All names: Gaia DR3 3651617891260122368, SDSS J144137.37-000528.5, SDSS J144137.38-000528.6, WD 1439+001, Gaia DR2 3651617891260122368, GALEX J144137.4-000528, Gaia EDR3 3651617891260122368, LBQS 1439+0007, 2QZ J144137.3-000528, MGC 67098

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Tremblay et al. 2011 Harris et al. 2003 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 14 41 37.34 (0.2) 14 41 37.38 14 41 37.34 (0.2) 14 41 37.37 (0.2) 14 41 37.38 14 41 36.77 14 41 37.38 14 41 37.38
Declination -00 05 28.88 (0.1) -00 05 28.52 -00 05 28.87 (0.2) -00 05 28.54 (0.1) -00 05 28.56 -00 05 34.80 -00 05 28.65 -00 05 28.64
Spectral type DA DA DA2 DA2 DA DA2.5 DA DA
Effective temperature [K] 15693.0 21230.0 (450) 20513.0 (284) 20438.0 (282) 20513.0 (276)
log(g) [cgs] 7.65 7.96 (0.07) 7.94 (0.05) 7.99 (0.05) 7.96 (0.05)
Mass [M] 0.438 0.6 (0.04) 0.618 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.0973 0.0513
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] 3.04 (0.2) 2.75 (0.3) 3.04 (0.2)
Distance [pc] 329.20 (19) 364.01 (34) 329.20 (19)
Composition H H
Proper motion (right ascension) [mas/yr] -30.47929518 (0.2) -30.57160663 (0.5) -30.479 (0.2) -27.1 -26.0
Proper motion (declination) [mas/yr] -21.10680009 (0.2) -20.89039914 (0.4) -21.107 (0.2) -21.3 -21.0
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 18.50
V magnitude
R magnitude
I magnitude
J magnitude 19.20 (0.1)
H magnitude
K magnitude
u magnitude 18.43 (0.01) 18.44 18.43 (0.01) 18.44 (0.02) 18.45 18.44 (0.02) 18.45 (0.02)
g magnitude 18.35 (0.007) 18.37 18.35 (0.007) 18.37 (0.02) 18.37 18.37 (0.02) 18.37 (0.02)
r magnitude 18.71 (0.009) 18.70 18.71 (0.009) 18.70 (0.01) 18.70 18.70 (0.01) 18.70 (0.01)
i magnitude 19.00 (0.01) 18.99 19.00 (0.01) 18.99 (0.01) 18.99 19.00 (0.02) 18.99 (0.02)
z magnitude 19.17 (0.05) 19.15 19.17 (0.05) 19.14 (0.05) 19.14 19.15 (0.05) 19.14 (0.05)
G magnitude 18.53 (0.03) 18.57 18.53 (0.004)
BP magnitude 18.47 (0.03) 18.45
RP magnitude 18.73 (0.05) 18.68
Pan g magnitude 18.39 (0.008)
Pan r magnitude 18.70 (0.004)
Pan i magnitude 18.98 (0.007)
Pan z magnitude 19.24 (0.009)
Pan y magnitude 19.33 (0.05)
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.