SDSS J080841.72-072852.8

All names: Gaia DR2 3063700433955197952, SDSS J080841.72-072852.80, Gaia EDR3 3063700433955197952, Gaia DR3 3063700433955197952, SDSS J080841.71-072852.7, GALEX J080841.7-072854, SDSS J080841.72-072852.8

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Koester & Kepler 2015 Simbad Kleinman et al. 2013 Vincent et al. 2023
Right ascension 08 08 41.73 (0.3) 08 08 41.72 08 08 41.73 (0.4) 08 08 41.71 (0.3) 08 08 41.72
Declination -07 28 53.03 (0.2) -07 28 52.79 -07 28 53.01 (0.2) -07 28 52.56 (0.2) -07 28 52.82
Spectral type DB DB DB DB+MS
Effective temperature [K] 17016.0 19026.0 13277.0 16948.0 (117) 17172.0 (158)
log(g) [cgs] 7.99 8.34 7.80 7.75 (0.07) 8.02 (0.08)
Mass [M] 0.585 0.805 0.477 0.599 (0.04)
log(Luminosity) [L]
Cooling age [Gyr] 0.2167
log(H/He) <-5.907 <-4.92
log(C/He)
log(Ca/He) <-6.19
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] 2.17 (0.3) 2.55 (0.4) 2.17 (0.3)
Distance [pc] 459.81 (62) 391.60 (58) 485.00 459.81 (62)
Composition He
Proper motion (right ascension) [mas/yr] 18.0340798 (0.4) 18.18553794 (0.8) 18.034 (0.4)
Proper motion (declination) [mas/yr] -29.36159418 (0.2) -28.81653159 (0.5) -29.362 (0.2)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity WDMS
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 19.10 (0.03) 19.10 (0.03) 19.03 (0.03)
g magnitude 19.15 (0.01) 19.16 (0.01) 19.12 (0.02)
r magnitude 19.52 (0.02) 19.52 (0.02) 19.45 (0.03)
i magnitude 19.76 (0.03) 19.76 (0.03) 19.62 (0.1)
z magnitude 20.14 (0.1) 20.14 (0.1) 19.89 (0.1)
G magnitude 19.24 (0.03) 19.29 19.24 (0.004)
BP magnitude 19.20 (0.03) 19.06
RP magnitude 19.36 (0.05) 19.12
Pan g magnitude 19.16 (0.01)
Pan r magnitude 19.38 (0.01)
Pan i magnitude 19.59 (0.02)
Pan z magnitude 19.82 (0.01)
Pan y magnitude 19.94 (0.06)
E(B-V) 0.047

* 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.