All names: SDSS J130835.71+634601.1, SDSS J130835.69+634600.9, WD 1306+640, Gaia EDR3 1676332745016114944, SDSS J130835.70+634600.9, SDSS J130835.69+634601.0, Gaia DR2 1676332745016114944, GALEX J130835.6+634601, Gaia DR3 1676332745016114944
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Kleinman et al. 2004 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 13 08 35.70 (0.3) | 13 08 35.71 | 13 08 35.70 (0.5) | 13 08 35.70 (0.3) | 13 08 35.70 | 13 08 35.09 | 13 08 35.71 | 13 08 35.71 | |||
| Declination | 63 46 01.15 (0.4) | 63 46 01.00 | 63 46 01.14 (0.4) | 63 46 00.94 (0.4) | 63 46 01.07 | 63 45 55.44 | 63 46 01.12 | 63 46 01.13 | |||
| Spectral type | DA | DA | DA3.9 | DA | DA | ||||||
| Effective temperature | [K] | 12926.0 (653) | 12907.0 (800) | 12973.0 (634) | |||||||
| log(g) | [cgs] | 7.98 (0.2) | 8.13 (0.2) | 7.96 (0.2) | |||||||
| Mass | [M☉] | 0.68 (0.1) | |||||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | ||||||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 1.42 (0.4) | 2.12 (0.6) | 1.42 (0.4) | |||||||
| Distance | [pc] | 704.15 (212) | 472.55 (124) | 704.18 (212) | |||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.983678056 (0.5) | 1.933503696 (0.9) | 2.984 (0.5) | |||||||
| Proper motion (declination) | [mas/yr] | 12.94738473 (0.5) | 13.61800944 (0.8) | 12.947 (0.5) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 20.53 (0.06) | 20.54 (0.06) | 20.52 (0.07) | 20.51 | 20.53 (0.07) | 20.51 (0.07) | |||||
| g magnitude | 20.10 (0.02) | 20.10 (0.02) | 20.11 (0.05) | 20.09 | 20.12 (0.05) | 20.09 (0.04) | |||||
| r magnitude | 20.34 (0.03) | 20.34 (0.03) | 20.35 (0.04) | 20.34 | 20.35 (0.03) | 20.34 (0.03) | |||||
| i magnitude | 20.57 (0.05) | 20.57 (0.05) | 20.48 (0.1) | 20.43 | 20.48 (0.1) | 20.43 (0.09) | |||||
| z magnitude | 21.67 (0.5) | 21.67 (0.5) | 21.64 (0.5) | 21.58 | 21.65 (0.5) | 21.58 (0.5) | |||||
| G magnitude | 20.22 (0.08) | 20.29 | 20.22 (0.006) | ||||||||
| BP magnitude | 20.05 (0.08) | 20.17 | |||||||||
| RP magnitude | 20.23 (0.08) | 20.12 | |||||||||
| Pan g magnitude | |||||||||||
| Pan r magnitude | |||||||||||
| Pan i magnitude | |||||||||||
| Pan z magnitude | |||||||||||
| Pan y magnitude | |||||||||||
| E(B-V) | 0.017 | ||||||||||
* 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.