All names: SDSS J074508.05+381106.7, FBS 0741+383, LAMOST J074508.04+381106.7, TIC 21372970, Gaia DR3 919963474904219776, HS 0741+3818, 2MASS J07450808+3811065, Gaia DR2 919963474904219776, GALEX J074507.9+381107, FBS B 49, HS0741+3818
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 45 08.05 | 07 45 08.05 (0.03) | ||
| Declination | 38 11 06.42 | 38 11 06.76 (0.02) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 31700.0 (1100) | ||
| log(g) | [cgs] | 5.35 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.61 (0.06) | 0.59 (0.04) | |
| Distance | [pc] | 1628.13 (162) | 1682.65 (106) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -6.403 (0.09) | -6.48 (0.04) | |
| Proper motion (declination) | [mas/yr] | -0.32 (0.07) | -0.31 (0.03) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 14.71 (0.07) | |||
| V magnitude | 14.91 (0.1) | |||
| R magnitude | 14.91 (0.1) | |||
| I magnitude | ||||
| J magnitude | 15.12 | |||
| H magnitude | 15.48 (0.1) | 15.48 (0.1) | ||
| K magnitude | 15.27 | |||
| u magnitude | 14.35 (0.003) | 14.37 (0.01) | ||
| g magnitude | 14.51 (0.003) | 14.54 (0.01) | ||
| r magnitude | 14.95 (0.004) | 14.94 (0.01) | ||
| i magnitude | 15.26 (0.004) | 15.27 (0.01) | ||
| z magnitude | 15.56 (0.006) | 15.55 (0.02) | ||
| G magnitude | 14.84 (0.0007) | 14.83 (0.003) | ||
| BP magnitude | 14.64 (0.006) | |||
| RP magnitude | 15.04 (0.003) | |||
| Pan g magnitude | 14.67 (0.002) | |||
| Pan r magnitude | 15.05 (0.002) | |||
| Pan i magnitude | 15.39 (0.004) | |||
| Pan z magnitude | 15.63 (0.005) | |||
| Pan y magnitude | 15.78 (0.01) | |||
| E(B-V) | 0.040 | |||
* 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.