EGGR 409

All names: WD 0112+104, WISE J011437.64+104104.2, UCAC4 504-001928, PG 0112+104, SDSS J011437.63+104104.3, EPIC 220670436, 0112+104, Gaia DR3 2580358214759857664, WISEA J011437.63+104104.3, GALEX J011437.6+104105, 2MASS J01143765+1041049, EGGR 409, Gaia EDR3 2580358214759857664, Gaia DR2 2580358214759857664, TIC 376920914

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Leggett et al. 2018 MWDD HE Gaia DR2 Stilism Bergeron et al. 2011 Dufour et al. 2010 Provencal et al. 2000 Beauchamp et al. 1999 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999)
Right ascension 01 14 37.63 (0.04) 01 14 37.63 (0.05) 01 14 37.63 01 14 37.65 (0.04) 01 14 37.68
Declination 10 41 04.04 (0.03) 10 41 04.06 (0.04) 10 41 04.04 10 41 04.76 (0.03) 10 41 03.48
Spectral type DB1.8 DB DB DB DB DB DB2.5 DB3
Effective temperature [K] 27861.0 (1507) 25845.0 31040.0 (1058) 31300.0 (500) 30000.0 (1000) 31500.0 28630.0 (531)
log(g) [cgs] 7.82 (0.07) 7.82 7.83 (0.06) 7.80 (0.1) 7.82 7.91 (0.01)
Mass [M] 0.517 (0.05) 0.516 0.53 (0.03) 0.52 0.568 (0.01)
log(Luminosity) [L] -0.74
Cooling age [Gyr] 0.0130 (0.003) 0.0165 0.0148
log(H/He) <-3.84 (0.8) <-4.0 -3.75 (0.2)
log(C/He) -6.15 (0.2) -5.5 (0.3)
log(Ca/He)
log(Ca/H)
log(N/He) <-7.0
log(O/He)
log(Na/He)
log(Mg/He)
log(Al/He)
log(Si/He) <-8.7
log(P/He) <-7.8
log(S/He) <-7.2
log(Cl/He) <-8.3
log(Sc/He)
log(Ti/He)
log(V/He) <-7.6
log(Cr/He) <-7.2
log(Mn/He) <-7.4
log(Fe/He) <-7.4
log(Co/He) <-7.2
log(Ni/He)
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He)
Parallax [mas] 9.01 (0.05) 8.60 (0.5) 8.99 (0.06) 9.01 9.01 (0.05)
Distance [pc] 110.93 (0.6) 116.28 (7) 111.24 (0.8) 124.00 110.93 110.93 (0.6)
Composition He He He He
Proper motion (right ascension) [mas/yr] -25.39323308 (0.05) -25.70066723 (0.1) -25.393 (0.06)
Proper motion (declination) [mas/yr] -45.0105142 (0.04) -44.9946225 (0.09) -45.011 (0.04)
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 15.27 (0.01)
V magnitude 15.36 15.41 (0.02)
R magnitude 15.69 (0.1)
I magnitude
J magnitude 15.84 (0.07)
H magnitude
K magnitude
u magnitude
g magnitude 15.21 (0.02)
r magnitude 15.62 (0.04)
i magnitude 15.69 (0.1)
z magnitude
G magnitude 15.37 (0.002) 15.38 15.37 15.37 (0.003)
BP magnitude 15.25 (0.002) 15.22
RP magnitude 15.58 (0.003) 15.58
Pan g magnitude 15.22 (0.002)
Pan r magnitude 15.58 (0.003)
Pan i magnitude 15.91 (0.001)
Pan z magnitude 16.16 (0.003)
Pan y magnitude 16.35 (0.006)
E(B-V) 0.008

* 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.