All names: WDJ184335.59+274026.97, GD 381, UCAC4 589-067210, 18435+2740, PM J18435+2740, Gaia EDR3 4539136259802013952, J1843+2740, Gaia DR3 4539136259802013952, GALEX J184335.5+274026, Gaia DR2 4539136259802013952
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Vincent et al. 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Limoges et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 18 43 35.64 (0.01) | 18 43 35.64 (0.02) | 18 43 35.64 | 18 43 35.59 (0.01) | 18 43 35.64 | |||||||
Declination | 27 40 25.40 (0.02) | 27 40 25.45 (0.02) | 27 40 25.40 | 27 40 26.97 (0.02) | 27 40 25.45 | |||||||
Spectral type | DA | DA | DA | |||||||||
Effective temperature | [K] | 10566.0 (57) | 10566.0 | 10901.0 | 11060.0 (163) | 10793.0 (43) | ||||||
log(g) | [cgs] | 8.00 | 7.97 | 8.10 (0.05) | 8.04 (0.005) | |||||||
Mass | [M☉] | 0.603 (0.006) | 0.603 | 0.564 | 0.66 (0.03) | 0.626 (0.005) | ||||||
log(Luminosity) | [L☉] | -2.71 | ||||||||||
Cooling age | [Gyr] | 0.5231 | 0.4757 | |||||||||
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] | 24.89 (0.02) | 24.87 (0.03) | 24.89 | 24.89 (0.02) | 24.87 (0.03) | ||||||
Distance | [pc] | 40.17 (0.03) | 40.21 (0.04) | 39.70 (2) | 40.17 | 40.17 (0.03) | 40.21 (0.04) | |||||
Composition | H | |||||||||||
Proper motion (right ascension) | [mas/yr] | 45.20999359 (0.02) | 45.31539996 (0.04) | 45.21 (0.02) | 45.31539996 | |||||||
Proper motion (declination) | [mas/yr] | -98.1378444 (0.02) | -98.12607313 (0.05) | -98.138 (0.02) | -98.12607313 | |||||||
Variability | VAR | |||||||||||
Magnetic | ||||||||||||
Bd | [MG] | |||||||||||
Infrared excess (disk) | ||||||||||||
Binarity | ||||||||||||
B magnitude | ||||||||||||
V magnitude | ||||||||||||
R magnitude | 15.18 (0.09) | |||||||||||
I magnitude | ||||||||||||
J magnitude | 13.98 | |||||||||||
H magnitude | 13.34 | |||||||||||
K magnitude | 13.14 | |||||||||||
u magnitude | ||||||||||||
g magnitude | ||||||||||||
r magnitude | ||||||||||||
i magnitude | ||||||||||||
z magnitude | ||||||||||||
G magnitude | 15.02 (0.001) | 15.04 | 15.02 | 15.02 (0.003) | 15.04 | |||||||
BP magnitude | 15.05 (0.001) | 15.05 | 15.05 | |||||||||
RP magnitude | 14.97 (0.002) | 14.98 | 14.98 | |||||||||
Pan g magnitude | 14.98 (0.003) | |||||||||||
Pan r magnitude | 15.14 (0.002) | |||||||||||
Pan i magnitude | 15.29 (0.005) | |||||||||||
Pan z magnitude | 15.46 (0.006) | |||||||||||
Pan y magnitude | 15.58 (0.004) | |||||||||||
E(B-V) | 0.004 |
* 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.