HZ 4

All names: UBV 3811, FB 32, KUV 03526+0939, Cl* Melotte 25 HZ 4, WD 0352+09, EGGR 26, HG 7-41, Cl* Melotte 25 LEID 1, HZ 4, UBV M 41451, LAMOST J035521.89+094718.2, WDJ035521.99+094718.13, GEN# +5.20252001, UBV 3825, GSC 00659-00027, LSPM J0355+0947, USNO-B1.0 0997-00053517, Gaia DR3 3302846072717868416, PM J03553+0947, Gaia DR2 3302846072717868416, WD 0352+096, TIC 415339071, 2MASS J03552198+0947180, Gaia EDR3 3302846072717868416, GALEX J035522.0+094718, GCRV 54606, 03553+0947, CSI+09-03521, GEN# +5.20257041

Parameter Unit Gaia EDR3 Pan-STARRS DR1 O'Brien et al. 2024 McCleery et al. 2020 MWDD H Gaia DR2 Stilism Guo et al. 2015 Limoges et al. 2015 Gianninas et al. 2011 Koester et al. 2009 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 03 55 22.18 (0.03) 03 55 22.17 (0.04) 03 55 22.17 (0.04) 03 55 22.18 03 55 21.99 (0.03) 03 55 22.17 03 55 21.50
Declination 09 47 18.05 (0.02) 09 47 18.05 (0.03) 09 47 18.05 (0.03) 09 47 18.05 09 47 18.14 (0.02) 09 47 18.05 09 47 13.56
Spectral type DA DA DA DA DA DA DA DA3.4 DA4
Effective temperature [K] 14518.0 (205) 14638.9 (92) 14015.0 14000.0 (906) 14550.0 (379) 14670.0 (377) 14440.0 (47) 14473.0 (113)
log(g) [cgs] 8.29 (0.02) 8.31 (0.009) 8.27 8.08 (0.08) 8.31 (0.05) 8.30 (0.05) 8.18 (0.005) 8.29 (0.006)
Mass [M] 0.793 (0.01) 0.778 0.66 (0.05) 0.81 (0.03) 0.8 (0.03) 0.794 (0.005)
log(Luminosity) [L] -2.36
Cooling age [Gyr] 0.3667
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
log(C/H)
log(N/H)
log(O/H)
log(Na/H)
log(Mg/H)
log(Al/H)
log(Si/H)
log(P/H)
log(S/H)
log(Sc/H)
log(Ti/H)
log(Cr/H)
log(Mn/H)
log(Fe/H)
log(Ni/H)
Parallax [mas] 28.59 (0.04) 28.59 (0.04) 28.59 (0.05) 28.59 (0.05) 28.59 28.59 (0.04) 28.59 (0.05) 22.00 (5)
Distance [pc] 34.98 (0.05) 34.98 (0.05) 34.98 (0.07) 34.98 (0.07) 35.20 (1) 36.00 34.98 34.98 (0.05) 34.98 (0.07) 45.45 (10)
Composition H H H H
Proper motion (right ascension) [mas/yr] 173.2741012 (0.04) 173.2721846 (0.1) 173.274 (0.04) 173.2721846
Proper motion (declination) [mas/yr] -5.569188781 (0.02) -5.509866138 (0.08) -5.569 (0.03) -5.509866138
Variability NOV
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 14.59
V magnitude 14.47 14.51
R magnitude 14.58
I magnitude 14.64
J magnitude 14.83 (0.04)
H magnitude 14.87 (0.06)
K magnitude 15.06 (0.1)
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 14.55 (0.001) 14.56 14.56 14.55 14.55 (0.003) 14.56
BP magnitude 14.52 (0.001) 14.51 14.51
RP magnitude 14.63 (0.001) 14.64 14.64
Pan g magnitude 14.46 (0.005)
Pan r magnitude 14.68 (0.003)
Pan i magnitude 14.95 (0.002)
Pan z magnitude 15.18 (0.003)
Pan y magnitude 15.34 (0.003)
E(B-V) 0.000

* 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.