GD 362

All names: G 204-14, GD 362, WDJ173134.32+370520.71, PG 1729+371, LSPM J1731+3705, 2MASS J17313433+3705209, J1731+3705, Gaia DR3 1336442472164656000, GALEX J173134.3+370519, USNO-B1.0 1270-00310327, WISE J173134.34+370518.5, GD362, 1729+371, WD 1729+371, EGGR 545, Gaia DR2 1336442472164656000, TIC 88844987, NLTT 44986, WISEA J173134.33+370518.4, Gaia EDR3 1336442472164656000

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Caron et al. 2023 Leggett et al. 2018 MWDD H Gaia DR2 Stilism Xu et al. 2013 Giammichele et al. 2012 Zuckerman et al. 2011 Farihi et al. 2010 Farihi et al. 2008 Zuckerman et al. 2007 Kilic et al. 2006 Kawka et Vennes 2006 Gianninas et al. 2004 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 17 31 34.35 (0.03) 17 31 34.35 (0.04) 17 31 34.35 17 31 34.32 (0.03) 17 31 34.35 17 31 34.66
Declination 37 05 17.24 (0.03) 37 05 17.35 (0.04) 37 05 17.24 37 05 20.71 (0.03) 37 05 17.35 37 05 28.32
Spectral type DAZB DAZB4.9 DAZB DAZB DAZB DAZB DAZB DAZ DAZ DAZ DA DAZB DA
Effective temperature [K] 9825.0 (59) 10057.0 (374) 10263.0 10540.0 10560.0 (149) 10500.0 10500.0 10500.0 10540.0 (200) 9740.0 9760.0 (70) 9740.0 (50) 10717.0 (74)
log(g) [cgs] 7.99 (0.009) 7.95 (0.05) 8.13 8.24 8.10 (0.04) 8.24 8.24 (0.04) 9.10 9.19 (0.08) 9.12 (0.07) 8.20 (0.009)
Mass [M] 0.574 (0.007) 0.551 (0.04) 0.682 0.72 0.64 (0.03) 1.26 (0.03) 1.24 0.727 (0.008)
log(Luminosity) [L] -2.80
Cooling age [Gyr] 0.6800 0.5740 (0.07) 0.6813 0.6500
log(H/He) -1.5 -1.14 (0.1) -1.14 (0.1)
log(C/He) -7.7 (0.3) <-5.64
log(Ca/He) -7.0 -6.24 (0.1) -6.24 -6.24 (0.1)
log(Ca/H) -5.1 -5.2 -5.2 (0.1)
log(N/He) <-4.14 <-4.14
log(O/He) <-5.14 <-5.14
log(Na/He) -7.79 (0.2) -7.79 (0.2)
log(Mg/He) -5.98 (0.2) -5.98 (0.2)
log(Al/He) -6.4 (0.2) -6.4 (0.2)
log(Si/He) -5.84 (0.3) -5.84 (0.3)
log(P/He)
log(S/He) <-6.70
log(Cl/He)
log(Sc/He) -10.19 (0.3) -10.19 (0.3)
log(Ti/He) -7.95 (0.1) -7.95 (0.1)
log(V/He) -8.74 (0.3) -8.74 (0.3)
log(Cr/He) -7.41 (0.1) -7.41 (0.1)
log(Mn/He) -7.47 (0.1) -7.47 (0.1)
log(Fe/He) -5.65 (0.1) -5.65 (0.1)
log(Co/He) -8.5 (0.4) -8.5 (0.4)
log(Ni/He) -7.07 (0.1) -7.07
log(Cu/He) -9.2 (0.4) -9.2 (0.4)
log(Zn/He)
log(Ga/He)
log(Ge/He)
log(Sr/He) -10.42 (0.3) -10.42 (0.3)
Parallax [mas] 17.81 (0.03) 17.78 (0.04) 17.49 (0.3) 17.78 (0.04) 19.90 (1) 17.81 17.81 (0.03) 17.78 (0.04) 45.00
Distance [pc] 56.13 (0.1) 56.24 (0.1) 57.18 (0.9) 56.25 (0.1) 51.00 50.30 (2) 22.00 25.00 56.13 56.13 (0.1) 56.25 (0.1) 22.22
Composition He H He He He He H H
Proper motion (right ascension) [mas/yr] 24.0097577 (0.03) 23.97489675 (0.08) 24.01 (0.03) 23.97489675
Proper motion (declination) [mas/yr] -216.9767687 (0.04) -216.8395583 (0.08) -216.977 (0.04) -216.8395583
Variability
Magnetic
Bd [MG]
Infrared excess (disk) yes yes yes
Binarity
B magnitude 16.30
V magnitude 16.23 16.23
R magnitude 16.40
I magnitude
J magnitude 16.01 (0.01) 16.16 (0.09)
H magnitude
K magnitude
u magnitude 16.29 (0.006) 16.28 (0.006)
g magnitude 16.02 (0.003)
r magnitude 16.14 (0.003)
i magnitude 16.24 (0.004)
z magnitude 16.43 (0.008)
G magnitude 16.03 (0.002) 16.05 16.03 16.03 (0.003) 16.05
BP magnitude 16.07 (0.002) 16.06 16.06
RP magnitude 15.96 (0.003) 15.97 15.97
Pan g magnitude 16.01 (0.009) 16.01 (0.009)
Pan r magnitude 16.14 (0.003) 16.14 (0.003)
Pan i magnitude 16.27 (0.001) 16.27 (0.002)
Pan z magnitude 16.45 (0.002) 16.45 (0.003)
Pan y magnitude 16.56 (0.004) 16.56 (0.004)
E(B-V) 0.007

* 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.