All names: SDSS J135754.49+181058.2, LAMOST J135754.45+181058.0, SDSS J135754.50+181058.3, GALEX J135754.4+181057, Gaia DR3 1244869882467388672, SDSS J135754.45+181058.0, Gaia EDR3 1244869882467388672, LAMOST J135754.50+181058.2, LAMOST J135754.45+181057.7, Gaia DR2 1244869882467388672, WIRED J135754.50+181058.2
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Gaia DR2 | Stilism | Guo et al. 2015 | Koester & Kepler 2015 | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 57 54.42 (0.07) | 13 57 54.50 | 13 57 54.42 (0.09) | 13 57 54.42 | 13 57 54.53 (0.07) | 13 57 54.50 | ||||||
| Declination | 18 10 58.00 (0.06) | 18 10 58.25 | 18 10 58.01 (0.09) | 18 10 58.00 | 18 10 58.39 (0.06) | 18 10 58.27 | ||||||
| Spectral type | DB | DB | DB | DB+M | DB+MS | |||||||
| Effective temperature | [K] | 15553.0 (49) | 11619.0 (211) | 15780.0 (84) | ||||||||
| log(g) | [cgs] | 8.00 (0) | 7.51 (0.03) | 8.26 (0.05) | ||||||||
| Mass | [M☉] | 0.347 (0.02) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | |||||||||||
| log(H/He) | <-5.56 | |||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | <-7.51 | |||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 5.69 (0.1) | 5.73 (0.1) | 5.69 | 5.69 (0.1) | |||||||
| Distance | [pc] | 175.75 (3) | 174.45 (4) | 179.00 | 175.75 | 175.75 (3) | ||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -99.99508837 (0.1) | -100.184081 (0.3) | -99.995 (0.1) | ||||||||
| Proper motion (declination) | [mas/yr] | -24.33783766 (0.09) | -24.30807968 (0.2) | -24.338 (0.09) | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | ||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 17.34 (0.01) | 17.34 (0.01) | 17.36 (0.02) | |||||||||
| g magnitude | 17.41 (0.005) | 17.41 (0.005) | 17.41 (0.02) | |||||||||
| r magnitude | 17.69 (0.006) | 17.69 (0.006) | 17.71 (0.02) | |||||||||
| i magnitude | 17.78 (0.007) | 17.78 (0.007) | 17.85 (0.02) | |||||||||
| z magnitude | 17.70 (0.02) | 17.70 (0.02) | 17.77 (0.02) | |||||||||
| G magnitude | 17.55 (0.008) | 17.58 | 17.55 | 17.55 (0.003) | ||||||||
| BP magnitude | 17.49 (0.008) | 17.47 | ||||||||||
| RP magnitude | 17.33 (0.008) | 17.35 | ||||||||||
| Pan g magnitude | 17.45 (0.005) | |||||||||||
| Pan r magnitude | 17.68 (0.004) | |||||||||||
| Pan i magnitude | 17.81 (0.01) | |||||||||||
| Pan z magnitude | 17.76 (0.02) | |||||||||||
| Pan y magnitude | 17.52 (0.01) | |||||||||||
| E(B-V) | 0.016 | |||||||||||
* 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.