All names: Gaia DR2 2833106904006692608, GALEX J223913.4+181945, UCAC4 542-145354, GALEX J223913.5+181946, 2MASS J22391361+1819462, ATO J339.8067+18.3294, Gaia DR3 2833106904006692608, CRTS J223913.6+181946, GALEXJ22392+1819
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 22 39 13.45 | 22 39 13.61 (0.04) | ||
Declination | 18 19 45.69 | 18 19 46.21 (0.03) | ||
Spectral type | sdB | sdB | ||
Effective temperature | [K] | 28970.0 (390) | ||
log(g) | [cgs] | 5.44 (0.08) | ||
Mass | [M☉] | |||
log(Luminosity) | [L☉] | |||
Cooling age | [Gyr] | |||
log(H/He) | ||||
log(C/He) | ||||
log(Ca/He) | ||||
log(Ca/H) | ||||
Parallax | [mas] | 0.98 (0.07) | 1.14 (0.04) | |
Distance | [pc] | 1025.54 (77) | 874.81 (34) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | 3.57 (0.1) | 3.746 (0.04) | |
Proper motion (declination) | [mas/yr] | -5.54 (0.09) | -5.543 (0.04) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | 13.92 (0.03) | |||
V magnitude | 14.17 (0.07) | |||
R magnitude | 14.45 (0.2) | |||
I magnitude | ||||
J magnitude | 14.50 (0.04) | 14.50 (0.04) | ||
H magnitude | 14.67 (0.06) | 14.67 (0.06) | ||
K magnitude | 14.53 (0.1) | 14.53 (0.1) | ||
u magnitude | 14.16 (0.005) | |||
g magnitude | 14.37 (0.005) | 13.92 (0.01) | ||
r magnitude | 14.45 (0.003) | 14.41 (0.1) | ||
i magnitude | 14.80 (0.006) | 14.63 (0.1) | ||
z magnitude | 14.87 (0.007) | |||
G magnitude | 14.07 (0.003) | 14.06 (0.004) | ||
BP magnitude | 13.90 (0.01) | |||
RP magnitude | 14.27 (0.01) | |||
Pan g magnitude | 13.94 (0.004) | |||
Pan r magnitude | 14.31 (0.01) | |||
Pan i magnitude | 14.63 (0.01) | |||
Pan z magnitude | 14.84 (0.01) | |||
Pan y magnitude | 15.08 (0.006) | |||
E(B-V) | 0.063 |
* 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.