All names: SDSS J133947.04+082237.7, Gaia DR2 3724814029588711424, GALEX J133947.1+082237, SDSS J133947.03+082237.6, Gaia EDR3 3724814029588711424, Gaia DR3 3724814029588711424, SDSS J133947.04+082237.6
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 39 47.02 (0.5) | 13 39 47.04 | 13 39 47.02 (0.8) | 13 39 47.04 (0.5) | 13 39 47.04 | |||
| Declination | 08 22 37.62 (0.3) | 08 22 37.68 | 08 22 37.62 (0.4) | 08 22 37.77 (0.3) | 08 22 37.68 | |||
| Spectral type | DA | DA | DA | |||||
| Effective temperature | [K] | 23596.0 (530) | ||||||
| log(g) | [cgs] | 7.87 (0.08) | ||||||
| Mass | [M☉] | 0.568 (0.04) | ||||||
| log(Luminosity) | [L☉] | |||||||
| Cooling age | [Gyr] | |||||||
| log(H/He) | ||||||||
| log(C/He) | ||||||||
| log(Ca/He) | ||||||||
| log(Ca/H) | ||||||||
| Parallax | [mas] | 0.95 (0.5) | 1.70 (0.7) | 0.95 (0.5) | ||||
| Distance | [pc] | 1048.56 (510) | 586.88 (228) | 1048.55 (509) | ||||
| Composition | ||||||||
| Proper motion (right ascension) | [mas/yr] | -16.64886226 (0.7) | -16.35220185 (1) | -16.649 (0.7) | ||||
| Proper motion (declination) | [mas/yr] | -9.837964745 (0.4) | -10.6357731 (0.7) | -9.838 (0.4) | ||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | ||||||||
| V magnitude | ||||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | ||||||||
| H magnitude | ||||||||
| K magnitude | ||||||||
| u magnitude | 19.71 (0.03) | 19.71 (0.04) | 19.72 (0.04) | |||||
| g magnitude | 19.84 (0.02) | 19.84 (0.02) | 19.84 (0.03) | |||||
| r magnitude | 20.12 (0.02) | 20.12 (0.03) | 20.12 (0.03) | |||||
| i magnitude | 20.50 (0.04) | 20.50 (0.04) | 20.48 (0.05) | |||||
| z magnitude | 21.39 (0.3) | 21.39 (0.3) | 21.42 (0.3) | |||||
| G magnitude | 19.96 (0.04) | 20.03 | 19.96 (0.005) | |||||
| BP magnitude | 19.87 (0.04) | 19.83 | ||||||
| RP magnitude | 20.12 (0.09) | 20.18 | ||||||
| Pan g magnitude | ||||||||
| Pan r magnitude | ||||||||
| Pan i magnitude | ||||||||
| Pan z magnitude | ||||||||
| Pan y magnitude | ||||||||
| 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.