All names: SDSS J081354.35-003833.67, UCAC4 447-044101, SDSS J081354.34-003833.6, Gaia DR3 3071397878637938304, Gaia EDR3 3071397878637938304, Gaia DR2 3071397878637938304, GALEX J081354.3-003832, SDSS J081354.35-003833.6, SDSSJ081354.34-003833.6
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 13 54.34 (0.04) | 08 13 54.35 | 08 13 54.35 | 08 13 54.34 (0.07) | 08 13 54.34 (0.04) | ||||
| Declination | -00 38 33.73 (0.03) | -00 38 33.67 | -00 38 33.68 | -00 38 33.73 (0.06) | -00 38 33.70 (0.03) | ||||
| Spectral type | sdB | sdB | sdB | ||||||
| Effective temperature | [K] | 27971.0 (1160) | 29224.0 (139) | ||||||
| log(g) | [cgs] | 5.44 (0.2) | 5.46 (0.03) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.52 (0.05) | 0.60 (0.08) | 0.60 (0.08) | 0.52 (0.05) | ||||
| Distance | [pc] | 1909.49 (188) | 1655.36 (225) | 1655.23 (225) | 1909.49 (187) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -4.648113982 (0.05) | -4.316 (0.1) | -4.315736578 (0.1) | -4.648 (0.05) | ||||
| Proper motion (declination) | [mas/yr] | -1.790754455 (0.04) | -1.949 (0.1) | -1.948806765 (0.1) | -1.791 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.93 (0.08) | ||||||||
| V magnitude | 16.25 (0.02) | ||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 15.74 (0.004) | 15.73 (0.004) | 15.74 (0.01) | 15.73 (0.004) | |||||
| g magnitude | 15.88 (0.003) | 15.88 (0.003) | 15.91 (0.01) | 15.88 (0.003) | |||||
| r magnitude | 16.36 (0.004) | 16.36 (0.004) | 16.37 (0.01) | 16.36 (0.004) | |||||
| i magnitude | 16.66 (0.004) | 16.66 (0.004) | 16.67 (0.01) | 16.66 (0.004) | |||||
| z magnitude | 16.96 (0.01) | 16.95 (0.01) | 16.96 (0.02) | 16.95 (0.01) | |||||
| G magnitude | 16.14 (0.004) | 16.17 (0.002) | 16.17 | 16.14 (0.003) | |||||
| BP magnitude | 16.03 (0.004) | 15.96 (0.01) | 15.96 | ||||||
| RP magnitude | 16.36 (0.008) | 16.36 (0.005) | 16.36 | ||||||
| Pan g magnitude | 15.97 (0.002) | 15.97 (0.002) | |||||||
| Pan r magnitude | 16.36 (0.002) | 16.36 (0.002) | |||||||
| Pan i magnitude | 16.70 (0.002) | 16.70 (0.002) | |||||||
| Pan z magnitude | 16.94 (0.006) | 16.94 (0.006) | |||||||
| Pan y magnitude | 17.09 (0.009) | 17.09 (0.009) | |||||||
| E(B-V) | 0.034 | ||||||||
* 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.