Gaia DR2 44556579141068544

All names: Gaia DR3 44556579141068544, Gaia DR2 44556579141068544, GALEX J034439.1+173908, WDJ034439.14+173908.40, Gaia EDR3 44556579141068544, WDJ034439.14+173908.41

Parameter Unit Gaia EDR3 Pan-STARRS DR1 MWDD H MWDD HE Gaia DR2 Stilism Vincent et al. 2024 Simbad Gentile Fusillo et al. 2018
Right ascension 03 44 39.05 (0.08) 03 44 39.05 03 44 39.05 03 44 39.14 (0.08) 03 44 39.05
Declination 17 39 07.86 (0.06) 17 39 07.88 17 39 07.86 17 39 08.41 (0.06) 17 39 07.88
Spectral type DC D
Effective temperature [K] 7488.0 7210.0 7080.0 (100)
log(g) [cgs] 8.15 8.05 7.97 (0.02)
Mass [M] 0.687 0.603 0.557 (0.02)
log(Luminosity) [L]
Cooling age [Gyr] 1.5880 1.5420
log(H/He)
log(C/He)
log(Ca/He)
log(Ca/H)
Parallax [mas] 16.96 (0.09) 16.92 (0.1) 16.96 16.96 (0.09) 16.92 (0.1)
Distance [pc] 58.97 (0.3) 59.12 (0.4) 58.97 58.97 (0.3) 59.12 (0.4)
Composition
Proper motion (right ascension) [mas/yr] -80.21061877 (0.1) -80.00962698 (0.2) -80.211 (0.1) -80.00962698
Proper motion (declination) [mas/yr] -34.47798019 (0.08) -34.29248185 (0.2) -34.478 (0.08) -34.29248185
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude
V magnitude
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude
g magnitude
r magnitude
i magnitude
z magnitude
G magnitude 17.25 (0.009) 17.27 17.25 17.25 (0.003) 17.27
BP magnitude 17.39 (0.009) 17.39 17.39
RP magnitude 16.97 (0.008) 16.95 16.95
Pan g magnitude 17.41 (0.007)
Pan r magnitude 17.29 (0.002)
Pan i magnitude 17.30 (0.005)
Pan z magnitude 17.36 (0.004)
Pan y magnitude 17.42 (0.007)
E(B-V) 0.001

* 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.