All names: Gaia DR2 895907607894131840, Gaia DR3 895907607894131840, 2MASS J07435822+3727282, FBS 0740+375, GALEX J074358.2+372729, TIC 21343832, SDSS J074358.22+372728.2, FBS B 48, HS0740+3734, HS 0740+3734
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 43 58.21 | 07 43 58.23 (0.03) | ||
| Declination | 37 27 28.60 | 37 27 28.22 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 20400.0 (900) | ||
| log(g) | [cgs] | 5.00 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.73 (0.05) | 0.76 (0.03) | |
| Distance | [pc] | 1374.76 (104) | 1317.70 (55) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 4.259 (0.09) | 4.465 (0.03) | |
| Proper motion (declination) | [mas/yr] | -6.868 (0.06) | -6.825 (0.02) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 15.17 (0.04) | 15.17 (0.04) | ||
| H magnitude | 15.20 (0.1) | 15.20 (0.1) | ||
| K magnitude | 15.32 (0.2) | 15.32 (0.2) | ||
| u magnitude | 14.68 (0.004) | 14.69 (0.01) | ||
| g magnitude | 14.60 (0.003) | 14.61 (0.01) | ||
| r magnitude | 15.00 (0.004) | 15.00 (0.01) | ||
| i magnitude | 15.30 (0.004) | 15.31 (0.02) | ||
| z magnitude | 15.58 (0.006) | 15.59 (0.02) | ||
| G magnitude | 14.85 (0.0007) | 14.83 (0.003) | ||
| BP magnitude | 14.68 (0.009) | |||
| RP magnitude | 14.99 (0.003) | |||
| Pan g magnitude | 14.69 (0.003) | |||
| Pan r magnitude | 15.04 (0.002) | |||
| Pan i magnitude | 15.35 (0.002) | |||
| Pan z magnitude | 15.58 (0.006) | |||
| Pan y magnitude | 15.71 (0.004) | |||
| E(B-V) | 0.041 | |||
* 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.