SDSS J073119.01+375814.3

All names: GALEX J073119.0+375814, WD 0727+380, Gaia DR2 898952288734552064, Gaia DR3 898952288734552064, SDSS J073119.01+375814.30, SDSS J073119.01+375814.3, Gaia EDR3 898952288734552064

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013
Right ascension 07 31 19.02 (0.9) 07 31 19.01 07 31 19.02 (1) 07 31 19.01 (0.9) 07 31 19.01 07 31 19.03 07 31 19.01
Declination 37 58 14.29 (0.8) 37 58 14.34 37 58 14.29 (1) 37 58 14.31 (0.8) 37 58 14.39 37 58 08.04 37 58 14.26
Spectral type DB: DB DB: DB: DB
Effective temperature [K] 18779.0 20345.0 16737.0 18876.0 (940) 20144.0 (974)
log(g) [cgs] 8.60 8.03 7.80 8.11 (0.2) 8.53 (0.1)
Mass [M] 0.973 0.617 0.483 0.922 (0.07)
log(Luminosity) [L]
Cooling age [Gyr] 0.0973
log(H/He) <-5.209
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] 1.33 (0.9) 1.18 (1) 1.33 (0.9)
Distance [pc] 753.01 (501) 849.81 (817) 753.01 (501)
Composition He
Proper motion (right ascension) [mas/yr] 2.883151037 (1) 2.732760484 (3) 2.883 (1) 1.5
Proper motion (declination) [mas/yr] -1.439975542 (1) -2.591667795 (3) -1.44 (1) -6.7
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 20.21 (0.04) 20.19 (0.05) 20.17 (0.05) 20.17 20.19 (0.05)
g magnitude 20.32 (0.02) 20.32 (0.02) 20.33 (0.03) 20.33 20.34 (0.03)
r magnitude 20.63 (0.04) 20.63 (0.04) 20.62 (0.03) 20.62 20.62 (0.03)
i magnitude 20.87 (0.06) 20.87 (0.06) 20.86 (0.06) 20.86 20.86 (0.06)
z magnitude 21.20 (0.3) 21.21 (0.3) 21.33 (0.3) 21.33 21.32 (0.3)
G magnitude 20.45 (0.09) 20.51 20.45 (0.01)
BP magnitude 20.16 (0.09) 20.19
RP magnitude 20.12 (0.2) 20.18
Pan g magnitude 20.26 (0.07)
Pan r magnitude 20.56 (0.02)
Pan i magnitude 20.85 (0.02)
Pan z magnitude 21.09 (0.2)
Pan y magnitude
E(B-V) 0.036

* 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.