SDSS J154100.78+431112.2

All names: Gaia DR3 1390480445012503936, Gaia DR2 1390480445012503936, GALEX J154100.8+431113, WD 1539+433, Gaia EDR3 1390480445012503936, SDSS J154100.78+431112.3, SDSS J154100.78+431112.30, SDSS J154100.78+431112.2

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 Genest-Beaulieu & Bergeron 2019 (spectroscopic) Genest-Beaulieu & Bergeron 2019 (photometric) MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Eisenstein et al. 2006 White Dwarf Catalog (McCook & Sion 1999) Kleinman et al. 2013 Vincent et al. 2023
Right ascension 15 41 00.78 (0.1) 15 41 00.78 15 41 00.78 (0.2) 15 41 00.78 15 41 00.79 (0.1) 15 41 00.79 15 41 00.24 15 41 00.78
Declination 43 11 12.13 (0.2) 43 11 12.27 43 11 12.14 (0.2) 43 11 12.13 43 11 12.32 (0.2) 43 11 12.27 43 11 07.80 43 11 12.27
Spectral type DB_A: DB DB_A DB_A: DB DBH: DB+MS
Effective temperature [K] 16128.0 17543.0 14496.0 14923.0 (1112) 16890.0 (204) 16422.0 (225)
log(g) [cgs] 8.07 8.24 8.00 7.97 (0.1) 8.33 (0.1) 8.32 (0.1)
Mass [M] 0.632 0.744 0.59 0.572 (0.09)
log(Luminosity) [L]
Cooling age [Gyr] 0.2220
log(H/He) -5.484
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] 3.04 (0.2) 3.10 (0.2) 3.04 3.04 (0.2)
Distance [pc] 329.49 (19) 322.17 (25) 329.49 329.49 (19)
Composition He
Proper motion (right ascension) [mas/yr] -4.487828162 (0.2) -4.80197704 (0.3) -4.488 (0.2) -5.2
Proper motion (declination) [mas/yr] -11.68220844 (0.2) -11.43486205 (0.5) -11.682 (0.2) -12.7
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 18.66 (0.02) 18.66 (0.02) 18.68 (0.02) 18.68 18.68 (0.02)
g magnitude 18.72 (0.009) 18.72 (0.009) 18.72 (0.02) 18.72 18.71 (0.02)
r magnitude 19.06 (0.01) 19.06 (0.01) 19.06 (0.02) 19.06 19.06 (0.02)
i magnitude 19.30 (0.02) 19.30 (0.02) 19.30 (0.03) 19.30 19.30 (0.03)
z magnitude 19.54 (0.08) 19.54 (0.08) 19.54 (0.07) 19.54 19.54 (0.07)
G magnitude 18.88 (0.02) 18.92 18.88 18.88 (0.003)
BP magnitude 18.84 (0.02) 18.80
RP magnitude 18.94 (0.03) 18.99
Pan g magnitude 18.79 (0.009)
Pan r magnitude 19.05 (0.01)
Pan i magnitude 19.29 (0.01)
Pan z magnitude 19.55 (0.03)
Pan y magnitude 19.62 (0.04)
E(B-V) 0.020

* 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.