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
Spectra without link are available upon request
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.