All names: Gaia DR3 1877320760449993216, ATO J338.5895+24.9492, LAMOST J223421.49+245657.1, 2MASS J22342148+2456573, HS 2231+2441, Gaia EDR3 1877320760449993216, HS2231+2441, TIC 150713389, GALEX J223421.4+245656, Gaia DR2 1877320760449993216, ZTF J223421.49+245657.1, CRTS J223421.4+245656
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 22 34 21.50 (0.03) | 22 34 21.43 | 22 34 21.48 (0.03) | ||
| Declination | 24 56 57.08 (0.03) | 24 56 58.45 | 24 56 57.39 (0.03) | ||
| Spectral type | sdB+dM | sdB+dM | |||
| Effective temperature | [K] | 27400.0 (700) | |||
| log(g) | [cgs] | 5.30 (0.1) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 1.08 (0.05) | 0.93 (0.07) | 1.08 (0.05) | |
| Distance | [pc] | 922.25 (39) | 1071.70 (84) | 922.25 (39) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | 13.098 (0.05) | 12.467 (0.2) | 13.098 (0.05) | |
| Proper motion (declination) | [mas/yr] | -19.379 (0.05) | -19.217 (0.2) | -19.379 (0.05) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | 14.20 | ||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 14.67 (0.04) | 14.67 (0.04) | |||
| H magnitude | 14.73 (0.05) | 14.73 (0.05) | |||
| K magnitude | 14.83 (0.1) | 14.83 (0.1) | |||
| u magnitude | 13.80 (0.003) | ||||
| g magnitude | 13.92 (0.003) | 14.01 | |||
| r magnitude | 14.37 (0.004) | 14.46 | |||
| i magnitude | 14.70 (0.004) | ||||
| z magnitude | 14.98 (0.005) | ||||
| G magnitude | 14.17 (0.004) | 14.19 (0.003) | 14.17 (0.004) | ||
| BP magnitude | 14.05 (0.005) | 14.01 (0.008) | |||
| RP magnitude | 14.40 (0.009) | 14.42 (0.02) | |||
| Pan g magnitude | 14.02 (0.009) | ||||
| Pan r magnitude | 14.40 (0.007) | ||||
| Pan i magnitude | 14.76 (0.006) | ||||
| Pan z magnitude | 15.01 (0.005) | ||||
| Pan y magnitude | 15.15 (0.007) | ||||
| E(B-V) | 0.055 | ||||
* 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.