SDSS J080743.33+393829.2

All names: Gaia DR2 909125451350925952, SDSS J080743.33+393829.2, SDSS J080743.33+393829.1, WD 0804+397, Gaia DR3 909125451350925952, Gaia EDR3 909125451350925952, GALEX J080743.1+393829, SDSS J080743.32+393829.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023a MWDD H Gaia DR2 Stilism Ferrario et al. 2015 Kulebi et al. 2009 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 07 43.32 (0.5) 08 07 43.33 08 07 43.32 (0.7) 08 07 43.33 08 07 43.34 (0.5) 08 07 43.06 08 07 43.33
Declination 39 38 28.96 (0.5) 39 38 29.10 39 38 28.96 (0.6) 39 38 29.18 39 38 29.19 (0.5) 39 38 22.20 39 38 29.19
Spectral type DAH DA DA DAH DAP DAP3.9 DA hotDQ
Effective temperature [K] 15986.3 (625) 12504.0 13000.0 10843.0 (464)
log(g) [cgs] 8.16 (0.2) 7.89 8.00 (0) 8.90 (0.6)
Mass [M] 0.7132928906722686 (0.3) 0.545 1.119 (0.1)
log(Luminosity) [L]
Cooling age [Gyr] 0.2890
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] 1.94 (0.7) 1.92 (0.9) 1.94 (0.7)
Distance [pc] 514.70 (185) 521.59 (247) 514.69 (185)
Composition H H
Proper motion (right ascension) [mas/yr] -10.5015163 (0.7) -10.22479385 (1) -10.502 (0.7)
Proper motion (declination) [mas/yr] -14.5569734 (0.5) -14.54227914 (1) -14.557 (0.5)
Variability
Magnetic yes yes yes yes
Bd [MG] 37.17108437349443 65.75 (19) 65.75 (19)
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.44 (0.04) 20.41 (0.05) 20.41 20.43 (0.04)
g magnitude 20.12 (0.02) 20.14 (0.02) 20.14 20.15 (0.03)
r magnitude 20.35 (0.03) 20.34 (0.03) 20.33 20.33 (0.03)
i magnitude 20.59 (0.05) 20.59 (0.05) 20.57 20.57 (0.05)
z magnitude 20.60 (0.2) 20.61 (0.2) 20.60 20.59 (0.1)
G magnitude 20.20 (0.09) 20.27 20.20 (0.007)
BP magnitude 20.37 (0.09) 20.16
RP magnitude 20.22 (0.1) 20.27
Pan g magnitude 20.10 (0.02)
Pan r magnitude 20.31 (0.01)
Pan i magnitude 20.53 (0.02)
Pan z magnitude 20.72 (0.03)
Pan y magnitude
E(B-V) 0.038

* 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.