All names: SDSS J004056.25-080912.4, Gaia DR2 2522649728500964608, NLTT 2219, LP 645-70, WDJ004056.17-080908.56, Gaia DR2 2522401586766106624, PB 8467, PSO J004056.257-080912.664, 2MASS J00405616-0809081, WD 0038-084, PSO J004056.278-080913.497
| Parameter | Unit | Blouin et al. 2019 | MWDD H | MWDD HE | Pan-STARRS DR1 | Pan-STARRS DR1 | Gaia DR2 | Ferrario et al. 2015 | SDSS DR12 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 40 56.30 | 00 40 56.30 (0.1) | 00 40 56.25 | 00 40 56.16 | 00 40 56.30 | ||||||
| Declination | -08 09 14.61 | -08 09 14.61 (0.06) | -08 09 12.48 | -08 09 08.10 | -08 09 14.61 | ||||||
| Spectral type | DA | DA | |||||||||
| Effective temperature | [K] | 6040.0 (40) | 5946.0 | 5678.0 | 6000.0 (180) | ||||||
| log(g) | [cgs] | 8.27 (0.02) | 8.22 | 8.07 | |||||||
| Mass | [M☉] | 0.757 (0.01) | 0.73 | 0.614 | 0.59 | ||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 4.0540 (0.1) | 3.9660 | 4.0110 | |||||||
| log(H/He) | |||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| Parallax | [mas] | 26.90 (0.1) | 26.90 (0.1) | 26.90 (0.1) | |||||||
| Distance | [pc] | 37.17 (0.2) | 37.17 (0.2) | 37.17 (0.2) | |||||||
| Composition | |||||||||||
| Proper motion (right ascension) | [mas/yr] | 124.8998831 (0.3) | 129.0 | 124.8998831 | |||||||
| Proper motion (declination) | [mas/yr] | -390.0531687 (0.1) | -405.0 | -390.0531687 | |||||||
| Variability | |||||||||||
| Magnetic | yes | ||||||||||
| Bd | [MG] | 0.307 * | |||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | |||||||||||
| B magnitude | 17.50 | ||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | 16.39 (0.1) | 16.39 | |||||||||
| H magnitude | 16.29 (0.2) | 16.29 | |||||||||
| K magnitude | |||||||||||
| u magnitude | 18.45 (0.02) | 18.44 | 18.44 (0.02) | ||||||||
| g magnitude | 17.58 (0.005) | 17.57 | 17.57 (0.005) | ||||||||
| r magnitude | 17.22 (0.005) | 17.21 | 17.21 (0.005) | ||||||||
| i magnitude | 17.11 (0.006) | 17.11 | 17.11 (0.006) | ||||||||
| z magnitude | 17.10 (0.01) | 17.07 | 17.07 (0.01) | ||||||||
| G magnitude | 17.23 | 17.23 | |||||||||
| BP magnitude | 17.51 | 17.51 | |||||||||
| RP magnitude | 16.77 | 16.77 | |||||||||
| Pan g magnitude | 17.53 (0.005) | 17.57 (0.03) | 17.57 (0.03) | ||||||||
| Pan r magnitude | 17.22 (0.002) | 17.22 (0.004) | 17.22 (0.004) | ||||||||
| Pan i magnitude | 17.09 (0.004) | 17.09 (0.005) | 17.09 (0.005) | ||||||||
| Pan z magnitude | 17.09 (0.006) | 17.08 (0.01) | 17.08 (0.01) | ||||||||
| Pan y magnitude | 17.09 (0.006) | 17.09 (0.01) | 17.09 (0.01) |
* Constant surface field
Spectra without link are available upon request
The Montreal White Dwarf Database is produced and maintained by Prof. Patrick Dufour at Université de Montréal. Please send database updates, corrections, suggestions or bug reports to dufourpa@astro.umontreal.ca.