All names: Gaia DR2 682072009543970688, SDSS J080127.57+255742.9, SDSS J080127.55+255742.8, TIC 392092589, 2MASS J08012757+2557428, Gaia EDR3 682072009543970688, Gaia DR3 682072009543970688, GALEX J080127.5+255741, GALEXJ08014+2557, Ton 4
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 08 01 27.57 (0.04) | 08 01 27.58 | 08 01 27.58 (0.04) | ||
| Declination | 25 57 42.94 (0.03) | 25 57 41.56 | 25 57 42.94 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | ||||
| log(g) | [cgs] | ||||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.79 (0.05) | 0.71 (0.06) | 0.79 (0.05) | |
| Distance | [pc] | 1273.40 (75) | 1404.10 (124) | 1273.40 (75) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -4.512 (0.04) | -4.665 (0.1) | -4.512 (0.04) | |
| Proper motion (declination) | [mas/yr] | -0.379 (0.04) | -0.466 (0.07) | -0.379 (0.04) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | |||||
| V magnitude | |||||
| R magnitude | |||||
| I magnitude | |||||
| J magnitude | 15.39 (0.05) | 15.42 (0.004) | |||
| H magnitude | 15.38 (0.1) | 15.53 (0.01) | |||
| K magnitude | 15.43 (0.2) | 15.64 (0.02) | |||
| u magnitude | 14.51 (0.004) | 14.42 (0.02) | |||
| g magnitude | 14.62 (0.004) | 14.55 (0.02) | |||
| r magnitude | 15.16 (0.008) | 15.05 (0.01) | |||
| i magnitude | 15.38 (0.005) | 15.38 (0.02) | |||
| z magnitude | 15.64 (0.007) | 15.70 (0.02) | |||
| G magnitude | 14.83 (0.003) | 14.85 (0.0007) | 14.83 (0.003) | ||
| BP magnitude | 14.70 (0.003) | 14.65 (0.01) | |||
| RP magnitude | 15.08 (0.004) | 15.07 (0.003) | |||
| Pan g magnitude | 14.67 (0.002) | ||||
| Pan r magnitude | 15.08 (0.002) | ||||
| Pan i magnitude | 15.42 (0.003) | ||||
| Pan z magnitude | 15.68 (0.004) | ||||
| Pan y magnitude | 15.85 (0.005) | ||||
| E(B-V) | 0.037 | ||||
* 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.