WD 0927+394

All names: WD 0927+394, KUV 09272+3930, Gaia DR2 811489437279153024, SDSS J093019.43+391627.2, GALEX J093019.4+391627, Gaia DR3 811489441575819648, Gaia EDR3 811489441575819648

Parameter Unit Gaia EDR3 Pan-STARRS DR1 SDSS DR12 MWDD H Gaia DR2 Stilism Gianninas et al. 2011 Vincent et al. 2024 Simbad White Dwarf Catalog (McCook & Sion 1999) Vincent et al. 2023
Right ascension 09 30 19.44 (0.07) 09 30 19.44 09 30 19.44 (0.1) 09 30 19.44 09 30 19.44 (0.07) 09 30 19.37
Declination 39 16 27.28 (0.05) 39 16 27.23 39 16 27.27 (0.08) 39 16 27.28 39 16 27.19 (0.05) 39 16 24.24
Spectral type DA DA DA DA2.0 DA DA
Effective temperature [K] 22808.0 25000.0 (492) 23831.0 (699)
log(g) [cgs] 8.07 8.35 (0.07) 8.12 (0.03)
Mass [M] 0.672 0.85 (0.04) 0.704 (0.03)
log(Luminosity) [L]
Cooling age [Gyr] 0.0449
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] 4.66 (0.09) 4.64 (0.1) 4.66 4.66 (0.09)
Distance [pc] 214.69 (4) 215.38 (7) 227.00 214.69 214.69 (4)
Composition H H
Proper motion (right ascension) [mas/yr] -2.125541325 (0.07) -2.026078619 (0.2) -2.126 (0.07)
Proper motion (declination) [mas/yr] 5.558817761 (0.06) 5.534841825 (0.1) 5.559 (0.06)
Variability
Magnetic
Bd [MG]
Infrared excess (disk)
Binarity
B magnitude 17.50
V magnitude 17.70
R magnitude
I magnitude
J magnitude
H magnitude
K magnitude
u magnitude 17.01 (0.008) 17.01 (0.008)
g magnitude 17.07 (0.004) 17.07 (0.004)
r magnitude 17.53 (0.006) 17.53 (0.006)
i magnitude 17.79 (0.008) 17.79 (0.008)
z magnitude 18.08 (0.03) 18.08 (0.03)
G magnitude 17.33 (0.006) 17.35 17.33 17.33 (0.003)
BP magnitude 17.22 (0.006) 17.19
RP magnitude 17.56 (0.01) 17.55
Pan g magnitude 17.15 (0.004)
Pan r magnitude 17.52 (0.004)
Pan i magnitude 17.87 (0.003)
Pan z magnitude 18.13 (0.006)
Pan y magnitude 18.32 (0.02)
E(B-V) 0.011

* 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.