WD J0842+3707

All names: WD 0839+372, Gaia DR2 909913766832936576, SDSS J084220.72+370701.7, Gaia EDR3 909913766832936576, SDSS J084220.73+370701.7, Gaia DR3 909913766832936576

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Tremblay et al. 2011 Mukadam et al. 2006 Mukadam et al. 2004 Vincent et al. 2024 White Dwarf Research Corporation Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 42 20.68 (0.2) 08 42 20.73 08 42 20.69 (0.3) 08 42 20.68 08 42 20.73 08 42 20.50 08 42 20.73
Declination 37 07 01.06 (0.1) 37 07 01.72 37 07 01.08 (0.2) 37 07 01.06 37 07 01.76 37 06 55.44 37 07 01.73
Spectral type DA DA DA DAV DA_auto DAV4.3 DA DA
Effective temperature [K] 10901.0 11910.0 (210) 11620.0 11620.0 11447.0 (455) 11720.0 11715.0 (166) 11640.0 (183)
log(g) [cgs] 7.90 7.93 (0.08) 7.88 7.88 7.96 (0.08) 7.73 7.73 (0.09) 7.89 (0.09)
Mass [M☉] 0.547 0.57 (0.05) 0.583 (0.07) 0.547 (0.04)
log(Luminosity) [L☉]
Cooling age [Gyr] 0.4252 0.3631
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] 3.76 (0.2) 3.78 (0.4) 3.76
Distance [pc] 266.04 (17) 264.82 (25) 266.04
Composition H H
Proper motion (right ascension) [mas/yr] -42.69450601 (0.2) -43.35724244 (0.5) -42.1
Proper motion (declination) [mas/yr] -48.80300815 (0.2) -48.65287315 (0.3) -51.3
Variability VAR VAR VAR VAR
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude 18.80 18.80 18.75
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.27 (0.02) 19.28 (0.03) 19.29 19.27 (0.03)
g magnitude 18.81 (0.008) 18.82 (0.02) 18.75 18.82 (0.02)
r magnitude 18.95 (0.01) 18.94 (0.03) 18.93 (0.03)
i magnitude 19.17 (0.02) 19.18 (0.03) 19.17 (0.03)
z magnitude 19.43 (0.06) 19.41 (0.06) 19.42 (0.06)
G magnitude 18.88 (0.02) 18.91 18.88
BP magnitude 18.92 (0.02) 18.86
RP magnitude 18.87 (0.03) 18.76
Pan g magnitude 18.83 (0.009)
Pan r magnitude 18.98 (0.007)
Pan i magnitude 19.19 (0.01)
Pan z magnitude 19.36 (0.01)
Pan y magnitude 19.42 (0.04)
E(B-V) 0.016
Period #1 [s] 212.3 309.3
Amplitude #1 [mma] 5.2 17.9
Period #2 [s] 309.3
Amplitude #2 [mma] 18.0
Period #3 [s] 321.1
Amplitude #3 [mma] 4.4

* 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.