WD 1755+408

All names: Gaia DR3 4611543459874840832, PSO J269.2686+40.8814, WDJ175704.46+405249.39, Gaia DR2 4611543459874840832, TIC 159850736, 2MASS J17570447+4052492, NLTT 45723, PM J17570+4052, Gaia EDR3 4611543459874840832, LP 228-12, J1757+4052, LSPM J1757+4052, WD 1755+408, USNO-B1.0 1308-00292083, 17570+4052, SDSS J175704.46+405249.9

Parameter Unit Gaia EDR3 Pan-STARRS DR1 Kilic et al. 2025 O'Brien et al. 2024 Caron et al. 2023 McCleery et al. 2020 Blouin et al. 2019 MWDD H MWDD HE Gaia DR2 Stilism Limoges et al. 2015 Kawka et Vennes 2006 Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018 White Dwarf Catalog (McCook & Sion 1999)
Right ascension 17 57 04.49 (0.04) 17 57 04.49 (0.06) 17 57 04.49 (0.06) 17 57 04.49 17 57 04.46 (0.04) 17 57 04.49 17 57 03.96
Declination 40 52 54.64 (0.05) 40 52 54.47 (0.07) 40 52 54.47 (0.07) 40 52 54.64 40 52 49.39 (0.05) 40 52 54.47 40 52 43.68
Spectral type DC DC DC DC DC DC DC DC DC DA DC DC9.3
Effective temperature [K] 5017.0 (16) 5337.0 (91) 5258.0 (16) 5378.1 (51) 5180.0 (60) 5504.0 5224.0 5920.0 (67) 5400.0 (600) 5749.0 (32)
log(g) [cgs] 7.76 (0.009) 7.98 (0.06) 7.95 (0.008) 8.02 (0.04) 7.91 (0.03) 8.11 7.93 8.00 (0) 8.00 8.21 (0.01)
Mass [M] 0.435 (0.007) 0.555 (0.04) 0.537 (0.007) 0.518 (0.02) 0.651 0.525 0.59 (0.1) 0.57 0.719 (0.01)
log(Luminosity) [L] -3.75
Cooling age [Gyr] 4.5900 4.3700 (0.3) 4.1520 4.3140
log(H/He) -5.0
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] 32.30 (0.05) 32.30 (0.05) 32.30 (0.07) 32.30 (0.07) 32.30 (0.07) 32.30 (0.07) 32.30 32.30 (0.05) 32.30 (0.07)
Distance [pc] 30.96 (0.05) 30.96 (0.05) 30.96 (0.07) 30.96 (0.07) 30.96 (0.07) 30.96 (0.07) 38.70 (6) 33.00 30.96 30.96 (0.05) 30.96 (0.07)
Composition He He He H
Proper motion (right ascension) [mas/yr] 17.66575084 (0.06) 17.70924354 (0.1) 17.666 (0.06) 17.70924354
Proper motion (declination) [mas/yr] 327.6069352 (0.07) 327.7209525 (0.1) 327.607 (0.07) 327.7209525
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.20
V magnitude
R magnitude 16.80
I magnitude
J magnitude 15.95 (0.01) 15.92 (0.07) 15.92 (0.07)
H magnitude 15.88 (0.1) 15.88 (0.1) 15.88 (0.1)
K magnitude 15.82 (0.2) 15.82 (0.2) 15.82 (0.2)
u magnitude 18.51 (0.02) 18.49 (0.02) 18.49 (0.02)
g magnitude 17.44 (0.003) 17.46 (0.005)
r magnitude 16.99 (0.004) 16.97 (0.005)
i magnitude 16.79 (0.004) 16.77 (0.005)
z magnitude 16.75 (0.005) 16.69 (0.01)
G magnitude 16.99 (0.01) 17.00 17.00 16.99 16.99 (0.003) 17.00
BP magnitude 17.32 (0.01) 17.35 17.35
RP magnitude 16.37 (0.01) 16.40 16.40
Pan g magnitude 17.44 (0.003) 17.44 (0.003) 17.44 (0.003)
Pan r magnitude 16.99 (0.004) 16.99 (0.004) 16.99 (0.004)
Pan i magnitude 16.79 (0.003) 16.79 (0.004) 16.79 (0.004)
Pan z magnitude 16.75 (0.006) 16.75 (0.006) 16.75 (0.006)
Pan y magnitude 16.76 (0.02) 16.76 (0.02) 16.75 (0.02)
E(B-V) 0.003

* 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.