GD 408

All names: NLTT 141, 2MASS J00050686+7313094, J0005+7313, USNO 486, WD 0002+72, PLX 5821.01, Gaia DR3 537563127588521600, WDJ000506.82+731309.38, GD 408, LSPM J0005+7313, WD 0002+729, GEN# +9.85049275, Gaia DR2 537563127588521600, PM J00051+7313, USNO-B1.0 1632-00001328, GD408, 00051+7313, TIC 373132595, EGGR 305, Gaia EDR3 537563127588521600, 0002+729, LP 49-275

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 McCleery et al. 2020 Coutu et al. 2019 Leggett et al. 2018 MWDD HE Gaia DR2 Bedard et al. 2017 Stilism Limoges et al. 2015 Bergeron et al. 2011 Zuckerman et al. 2010 Desharnais et al. 2008 Wolff et al. 2002 Weidemann and Koester 1995 Sion et al. 1990 Wegner et al. 1987 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 00 05 07.52 (0.02) 00 05 07.49 (0.03) 00 05 06.82 00 05 07.49 (0.03) 00 05 07.52 00 05 06.82 (0.02) 00 05 07.49 00 05 05.40
Declination 73 13 11.34 (0.02) 73 13 11.28 (0.03) 73 13 09.38 73 13 11.28 (0.03) 73 13 11.34 73 13 09.38 (0.02) 73 13 11.28 73 13 05.88
Spectral type DBZA DBAZ DBZA DBA3.7 DB DBA DB DBA DBZ DBA DBZA? DB DB4 DB4
Effective temperature [K] 13700.0 (192) 13701.7 (100) 12673.0 (759) 13537.0 (733) 13059.0 14406.0 (235) 14490.0 (236) 14410.0 (353) 14200.0 14660.0 13750.0 (250) 13500.0 13000.0 13000.0 14028.0 (82)
log(g) [cgs] 8.07 (0.02) 8.07 (0.01) 7.95 8.04 (0.06) 8.01 8.26 (0.1) 8.34 (0.1) 8.26 (0.1) 8.00 (0.2) 8.11 (0.006)
Mass [M] 0.631 (0.01) 0.5559 0.61 (0.05) 0.593 0.87 (0.4) 0.8 (0.08) 0.75 (0.07) 0.652 (0.006)
log(Luminosity) [L] -2.40 -2.36
Cooling age [Gyr] 0.3050 0.2900 (0.05) 0.3070 0.3467 2.7000
log(H/He) -6.1078 (0) -5.97 (0.8) -6 (0.3) <-5
log(C/He) -8.8 <-7.0 <-6.5 <-7
log(Ca/He) -10.0735 (0.4) -9.3 -9.0 -9.6 (0.3)
log(Ca/H)
log(N/He) <-8
log(O/He) <-6.6
log(Na/He)
log(Mg/He) -8.5 (0.5)
log(Al/He)
log(Si/He) -8 <-8.0
log(P/He) <-8.8
log(S/He) <-8.0
log(Cl/He) <-8.1
log(Sc/He)
log(Ti/He)
log(V/He) <-8.1
log(Cr/He) <-7.7
log(Mn/He)
log(Fe/He) -8.2 -7.5 (0.8)
log(Co/He) <-7.3
log(Ni/He) <-8.1
log(Cu/He)
log(Zn/He)
log(Ga/He)
log(Ge/He) <-9.4
log(Sr/He)
Parallax [mas] 28.98 (0.02) 28.98 (0.02) 28.84 (0.03) 28.84 28.35 (0.5) 28.84 (0.03) 28.80 (5) 28.98 28.98 (0.02) 28.84 (0.03) 28.80 (32)
Distance [pc] 34.50 (0.03) 34.51 (0.02) 34.67 (0.04) 34.67 (0.04) 35.27 (0.6) 34.67 (0.04) 34.70 (6) 34.70 (6) 32.00 34.50 34.50 (0.03) 34.67 (0.04) 34.72 (39)
Composition He He He He He He
Proper motion (right ascension) [mas/yr] 188.1610999 (0.02) 188.0896996 (0.06) 188.161 (0.02) 188.0896996
Proper motion (declination) [mas/yr] 122.1075491 (0.02) 122.0073107 (0.05) 122.108 (0.02) 122.0073107
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 14.27
V magnitude 14.33
R magnitude 14.40
I magnitude
J magnitude 14.62 (0.04)
H magnitude 14.60 (0.06)
K magnitude 14.76 (0.1)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 14.27 (0.001) 14.29 14.29 14.27 14.27 (0.003) 14.29
BP magnitude 14.22 (0.001) 14.19 14.19
RP magnitude 14.33 (0.001) 14.33 14.33
Pan g magnitude 14.23 (0.002)
Pan r magnitude 14.45 (0.002)
Pan i magnitude 14.68 (0.002)
Pan z magnitude 14.87 (0.002)
Pan y magnitude 15.02 (0.005)
E(B-V) 0.002

* 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.