All names: Gaia DR2 1191689807863866112, SDSS J155758.77+140220.5, Gaia DR3 1191689807863866112, UCAC4 521-058563, GALEX J155758.8+140221, 2MASS J15575877+1402203, LAMOST J155758.77+140220.5, TIC 393642634, SDSS J155758.77+140220.4, PG 1555+142, UCAC2 36835356, Gaia EDR3 1191689807863866112, PG1555+142
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|---|
| Right ascension | 15 57 58.77 (0.03) | 15 57 58.78 | 15 57 58.77 (0.03) | ||
| Declination | 14 02 20.51 (0.03) | 14 02 20.13 | 14 02 20.43 (0.03) | ||
| Spectral type | sdB | sdB | |||
| Effective temperature | [K] | 30520.0 (310) | |||
| log(g) | [cgs] | 5.85 (0.03) | |||
| Mass | [M☉] | ||||
| log(Luminosity) | [L☉] | ||||
| Cooling age | [Gyr] | ||||
| log(H/He) | |||||
| log(C/He) | |||||
| log(Ca/He) | |||||
| log(Ca/H) | |||||
| Parallax | [mas] | 0.90 (0.04) | 0.87 (0.06) | 0.90 (0.04) | |
| Distance | [pc] | 1109.75 (49) | 1143.90 (74) | 1109.75 (49) | |
| Composition | |||||
| Proper motion (right ascension) | [mas/yr] | -1.263 (0.04) | -1.308 (0.08) | -1.263 (0.04) | |
| Proper motion (declination) | [mas/yr] | 4.523 (0.03) | 4.554 (0.06) | 4.523 (0.03) | |
| Variability | |||||
| Magnetic | |||||
| Bd | [MG] | ||||
| Infrared excess (disk) | |||||
| Binarity | |||||
| B magnitude | 15.16 (0.09) | ||||
| V magnitude | 15.41 (0.01) | ||||
| R magnitude | 15.69 (0.2) | ||||
| I magnitude | |||||
| J magnitude | 15.79 (0.07) | 15.79 (0.07) | |||
| H magnitude | 15.85 (0.2) | 15.85 (0.2) | |||
| K magnitude | 16.13 | ||||
| u magnitude | 14.95 (0.004) | 14.95 (0.004) | |||
| g magnitude | 15.09 (0.003) | 15.09 (0.003) | |||
| r magnitude | 15.62 (0.004) | 15.62 (0.004) | |||
| i magnitude | 15.87 (0.004) | 15.87 (0.004) | |||
| z magnitude | 16.16 (0.007) | 16.16 (0.007) | |||
| G magnitude | 15.35 (0.003) | 15.37 (0.0006) | 15.35 (0.003) | ||
| BP magnitude | 15.23 (0.004) | 15.17 (0.006) | |||
| RP magnitude | 15.57 (0.004) | 15.57 (0.003) | |||
| Pan g magnitude | 15.21 (0.006) | ||||
| Pan r magnitude | 15.57 (0.003) | ||||
| Pan i magnitude | 15.91 (0.003) | ||||
| Pan z magnitude | 16.15 (0.003) | ||||
| Pan y magnitude | 16.32 (0.006) | ||||
| E(B-V) | 0.036 | ||||
* 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.