SDSS J083448.63+821059.1

All names: WD 0825+823, Gaia DR3 1145530797899525376, SDSS J083448.63+821059.1, Gaia DR2 1145530797899525376, Gaia EDR3 1145530797899525376, SDSS J083448.65+821059.0

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 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 34 48.60 (0.1) 08 34 48.65 08 34 48.60 (0.2) 08 34 48.63 08 34 48.60 08 34 48.69 (0.1) 08 34 48.62 08 34 48.65
Declination 82 10 59.03 (0.2) 82 10 59.00 82 10 59.02 (0.2) 82 10 59.09 82 10 59.03 82 10 58.96 (0.2) 82 10 54.84 82 10 59.00
Spectral type DAH DA DA DAH DA: DAH DAH1.9 DAH DAH
Effective temperature [K] 28114.5 (1103) 23185.0 27000.0 28763.0 (2240) 41210.0 (539)
log(g) [cgs] 9.02 (0.1) 8.86 8.00 (0) 9.00 (0.08) 10.00 (0.002)
Mass [M] 1.210932686474287 (0.09) 1.138 1.205 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.2468
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] 4.73 (0.2) 4.89 (0.2) 4.73 4.73 (0.2)
Distance [pc] 211.52 (8) 204.33 (7) 211.52 211.52 (8)
Composition H H
Proper motion (right ascension) [mas/yr] -11.36266019 (0.2) -11.05362343 (0.3) -11.363 (0.2)
Proper motion (declination) [mas/yr] 4.297902222 (0.2) 3.912144737 (0.4) 4.298 (0.2)
Variability
Magnetic yes yes yes yes
Bd [MG] 14.593367807760377 14.44 (5) 14.44 (5)
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 18.05 (0.01) 18.05 (0.01) 18.07 18.08 (0.02)
g magnitude 18.31 (0.007) 18.31 (0.007) 18.32 18.33 (0.01)
r magnitude 18.74 (0.01) 18.74 (0.01) 18.74 18.75 (0.02)
i magnitude 19.05 (0.02) 19.05 (0.02) 19.06 19.08 (0.02)
z magnitude 19.49 (0.09) 19.49 (0.09) 19.49 19.50 (0.09)
G magnitude 18.53 (0.02) 18.57 18.53 18.53 (0.003)
BP magnitude 18.42 (0.02) 18.40
RP magnitude 18.79 (0.03) 18.78
Pan g magnitude 18.38 (0.005)
Pan r magnitude 18.76 (0.009)
Pan i magnitude 19.08 (0.01)
Pan z magnitude 19.38 (0.02)
Pan y magnitude 19.49 (0.03)
E(B-V) 0.012

* 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.