All names: SDSS J083256.30-025537.8, SDSS J083256.30-025537.9, GALEX J083256.2-025538, 2MASS J08325628-0255382, SDSS J083256.31-025537.8, Gaia DR3 3072637990315089024, SDSS J083256.31-025537.89, Gaia DR2 3072637990315089024, SDSSJ083256.31-025537.9, Gaia EDR3 3072637990315089024, TIC 121234394
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Geier 2020 | Gaia DR2 | Stilism | Kepler et al. 2016 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 32 56.30 (0.05) | 08 32 56.31 | 08 32 56.31 | 08 32 56.30 (0.07) | 08 32 56.31 (0.05) | ||||
| Declination | -02 55 37.98 (0.03) | -02 55 37.91 | -02 55 37.90 | -02 55 37.98 (0.05) | -02 55 37.89 (0.03) | ||||
| Spectral type | sdB | sdB | sdB2He4 | ||||||
| Effective temperature | [K] | 27286.0 (1239) | 28219.0 (185) | ||||||
| log(g) | [cgs] | 5.23 (0.2) | 5.32 (0.03) | ||||||
| Mass | [M☉] | ||||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| Parallax | [mas] | 0.43 (0.06) | 0.44 (0.08) | 0.44 (0.08) | 0.43 (0.06) | ||||
| Distance | [pc] | 2311.96 (336) | 2259.38 (407) | 2259.53 (408) | 2312.14 (336) | ||||
| Composition | |||||||||
| Proper motion (right ascension) | [mas/yr] | -7.445484151 (0.06) | -7.549 (0.1) | -7.54866235 (0.1) | -7.445 (0.06) | ||||
| Proper motion (declination) | [mas/yr] | -5.595853481 (0.05) | -5.401 (0.1) | -5.400923159 (0.1) | -5.596 (0.04) | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.39 (0.1) | 16.39 (0.1) | |||||||
| H magnitude | 15.73 | ||||||||
| K magnitude | 16.52 | ||||||||
| u magnitude | 15.58 (0.005) | 15.57 (0.005) | 15.54 (0.01) | 15.57 (0.005) | |||||
| g magnitude | 15.68 (0.004) | 15.68 (0.004) | 15.69 (0.01) | 15.68 (0.004) | |||||
| r magnitude | 16.14 (0.004) | 16.14 (0.004) | 16.13 (0.01) | 16.14 (0.004) | |||||
| i magnitude | 16.46 (0.004) | 16.46 (0.004) | 16.47 (0.01) | 16.46 (0.004) | |||||
| z magnitude | 16.77 (0.009) | 16.77 (0.009) | 16.77 (0.02) | 16.77 (0.009) | |||||
| G magnitude | 15.90 (0.003) | 15.92 (0.001) | 15.92 | 15.90 (0.003) | |||||
| BP magnitude | 15.78 (0.003) | 15.72 (0.008) | 15.72 | ||||||
| RP magnitude | 16.14 (0.004) | 16.15 (0.004) | 16.15 | ||||||
| Pan g magnitude | 15.74 (0.003) | 15.74 (0.003) | |||||||
| Pan r magnitude | 16.13 (0.002) | 16.14 (0.002) | |||||||
| Pan i magnitude | 16.49 (0.004) | 16.49 (0.004) | |||||||
| Pan z magnitude | 16.75 (0.006) | 16.75 (0.006) | |||||||
| Pan y magnitude | 16.92 (0.007) | 16.92 (0.007) | |||||||
| E(B-V) | 0.030 | ||||||||
* 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.