SDSS J083754.83+533240.3

All names: GALEX J083754.8+533240, SDSS J083754.83+533240.30, Gaia DR3 1030233534709729152, Gaia EDR3 1030233534709729152, SDSS J083754.82+533240.2, Gaia DR2 1030233534709729152, SDSS J083754.83+533240.3

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Hardy et al. 2023b Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 37 54.83 (0.4) 08 37 54.83 08 37 54.83 (0.6) 08 37 54.83 (0.4) 08 37 54.83
Declination 53 32 40.54 (0.3) 53 32 40.35 53 32 40.53 (0.6) 53 32 40.25 (0.3) 53 32 40.31
Spectral type HotDC DBH DBH DBH DC+MS
Effective temperature [K] 13210.0 35362.0 29592.0 20818.0 (10284)
log(g) [cgs] 8.82 8.35 8.18 8.86 (1)
Mass [M] 1.098 0.833 0.72
log(Luminosity) [L]
Cooling age [Gyr] 0.0146
log(H/He) <-6.122
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] 1.72 (0.4) 1.29 (0.6) 1.72 (0.4)
Distance [pc] 580.99 (149) 774.77 (363) 580.99 (149)
Composition He
Proper motion (right ascension) [mas/yr] 4.753899907 (0.5) 3.274057224 (1) 4.754 (0.5)
Proper motion (declination) [mas/yr] 18.24282294 (0.5) 19.46593228 (1) 18.243 (0.5)
Variability
Magnetic yes
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.53 (0.03) 19.53 (0.03) 19.52 (0.04)
g magnitude 19.90 (0.02) 19.90 (0.02) 19.88 (0.03)
r magnitude 20.21 (0.03) 20.21 (0.03) 20.23 (0.04)
i magnitude 20.49 (0.05) 20.49 (0.05) 20.48 (0.06)
z magnitude 20.90 (0.3) 20.90 (0.3) 20.50 (0.2)
G magnitude 20.04 (0.06) 20.11 20.04 (0.006)
BP magnitude 20.02 (0.06) 19.91
RP magnitude 20.24 (0.1) 20.29
Pan g magnitude 19.94 (0.01)
Pan r magnitude 20.25 (0.02)
Pan i magnitude 20.49 (0.02)
Pan z magnitude 20.46 (0.06)
Pan y magnitude
E(B-V) 0.030

* 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.