WD 1435+420

All names: J1437+4151, WDJ143718.19+415151.72, Gaia EDR3 1492944375984949504, WD 1435+420, LSPM J1437+4151, USNO-B1.0 1318-00279452, SDSS J143718.14+415151.5, SDSS J143718.15+415151.5, Gaia DR3 1492944375984949504, Gaia DR2 1492944375984949504

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 Caron et al. 2023 Bergeron et al. 2022 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 14 37 17.96 (0.08) 14 37 17.97 (0.1) 14 37 17.96 14 37 18.19 (0.08) 14 37 17.97 14 37 17.88
Declination 41 51 50.59 (0.1) 41 51 50.63 (0.1) 41 51 50.59 41 51 51.72 (0.1) 41 51 50.63 41 51 44.28
Spectral type DC-IRfaint DC DC DC DC DA: DC DC11.3
Effective temperature [K] 5134.0 (44) 5123.0 (45) 5134.0 (44) 5314.0 5010.0 5336.0 (63)
log(g) [cgs] 8.09 (0.01) 8.08 (0.01) 8.13 7.93 8.14 (0.03)
Mass [M☉] 0.623 (0.007) 0.617 (0.009) 0.623 (0.007) 0.662 0.528 0.669 (0.03)
log(Luminosity) [L☉]
Cooling age [Gyr] 6.0400 5.8430 5.4860 5.0660
log(H/He) -1.7 -1.69 -1.7
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] 18.02 (0.1) 17.97 (0.2) 17.97 (0.2) 18.02 18.02 (0.1) 17.97 (0.2)
Distance [pc] 55.49 (0.4) 55.65 (0.5) 55.66 (0.5) 55.49 55.49 (0.4) 55.66 (0.5)
Composition He
Proper motion (right ascension) [mas/yr] -158.5420964 (0.1) -158.6200699 (0.2) -158.542 (0.1) -158.6200699
Proper motion (declination) [mas/yr] -70.29871131 (0.1) -70.46438828 (0.2) -70.299 (0.1) -70.46438828
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 19.70
V magnitude
R magnitude 18.40
I magnitude
J magnitude 17.43 (0.04) 17.43 (0.04)
H magnitude 17.76 (0.05) 17.76 (0.05)
K magnitude 18.42 (0.08) 18.42 (0.08)
u magnitude 20.12 (0.04) 20.12 (0.04) 20.12 (0.04) 20.06
g magnitude 19.01 (0.009) 19.01 (0.009) 19.03
r magnitude 18.45 (0.009) 18.45 (0.009) 18.45
i magnitude 18.15 (0.009) 18.15 (0.009) 18.23
z magnitude 18.10 (0.02) 18.10 (0.02) 18.12
G magnitude 18.47 (0.02) 18.50 18.47 18.47 (0.003) 18.50
BP magnitude 18.90 (0.02) 18.90 18.90
RP magnitude 17.89 (0.01) 17.90 17.90
Pan g magnitude 18.95 (0.02) 18.95 (0.02)
Pan r magnitude 18.45 (0.005) 18.45 (0.006)
Pan i magnitude 18.24 (0.005) 18.24 (0.006)
Pan z magnitude 18.17 (0.003) 18.17 (0.004)
Pan y magnitude 18.16 (0.01) 18.16 (0.01)
E(B-V) 0.006

* Constant surface field

Special notes:

Spectra

Controls

Normalize at:
Normalize by mean flux

Range:

x: to
y: to

Spectra available:

Spectra without link are available upon request

Absorption lines

Photometric filters

BVRI
ugriz

Photometric fit




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.