All names: Gaia DR2 4414809875835433216, GALEX J152025.9-023837, J1520-0238, WDJ152025.87-023837.94, LAMOST J152025.87-023837.9, SDSS J152025.87-023837.9, Gaia DR3 4414809875835433216, Gaia EDR3 4414809875835433216
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Gaia DR2 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 20 25.89 (0.08) | 15 20 25.88 | 15 20 25.89 | 15 20 25.87 (0.08) | |||||
| Declination | -02 38 38.36 (0.07) | -02 38 38.34 | -02 38 38.36 | -02 38 37.95 (0.07) | |||||
| Spectral type | DA | DA | DA | DA | |||||
| Effective temperature | [K] | 10305.0 (59) | 10131.0 (184) | ||||||
| log(g) | [cgs] | 8.06 (0.01) | 8.03 (0.03) | ||||||
| Mass | [M☉] | 0.639 (0.01) | 0.62 (0.03) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | 0.6400 | |||||||
| log(H/He) | |||||||||
| log(C/He) | |||||||||
| log(Ca/He) | |||||||||
| log(Ca/H) | |||||||||
| log(C/H) | |||||||||
| log(N/H) | |||||||||
| log(O/H) | |||||||||
| log(Na/H) | |||||||||
| log(Mg/H) | |||||||||
| log(Al/H) | |||||||||
| log(Si/H) | |||||||||
| log(P/H) | |||||||||
| log(S/H) | |||||||||
| log(Sc/H) | |||||||||
| log(Ti/H) | |||||||||
| log(Cr/H) | |||||||||
| log(Mn/H) | |||||||||
| log(Fe/H) | |||||||||
| log(Ni/H) | |||||||||
| Parallax | [mas] | 9.93 (0.09) | 9.91 (0.1) | 9.91 (0.1) | 9.93 | 9.93 (0.09) | |||
| Distance | [pc] | 100.72 (0.9) | 100.91 (1) | 100.89 (1) | 100.72 | 100.72 (0.9) | |||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 14.38503968 (0.1) | 14.25086687 (0.2) | 14.385 (0.1) | |||||
| Proper motion (declination) | [mas/yr] | -25.77034938 (0.09) | -25.67862794 (0.2) | -25.77 (0.09) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 17.19 (0.03) | 17.19 (0.03) | |||||||
| H magnitude | 17.06 (0.05) | 17.06 (0.05) | |||||||
| K magnitude | 17.14 (0.1) | 17.14 (0.1) | |||||||
| u magnitude | 17.60 (0.01) | 17.60 (0.01) | |||||||
| g magnitude | 17.16 (0.004) | ||||||||
| r magnitude | 17.27 (0.005) | ||||||||
| i magnitude | 17.40 (0.006) | ||||||||
| z magnitude | 17.62 (0.02) | ||||||||
| G magnitude | 17.19 (0.006) | 17.21 | 17.19 | 17.19 (0.003) | |||||
| BP magnitude | 17.26 (0.006) | 17.24 | |||||||
| RP magnitude | 17.13 (0.009) | 17.11 | |||||||
| Pan g magnitude | 17.17 (0.003) | 17.17 (0.003) | |||||||
| Pan r magnitude | 17.27 (0.005) | 17.27 (0.005) | |||||||
| Pan i magnitude | 17.43 (0.005) | 17.43 (0.005) | |||||||
| Pan z magnitude | 17.60 (0.006) | 17.60 (0.006) | |||||||
| Pan y magnitude | 17.72 (0.01) | 17.72 (0.01) | |||||||
| E(B-V) | 0.021 | ||||||||
* 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.