All names: SDSS J081548.70+364950.8, Gaia DR3 907596412929066240, GALEX 2684015661368217737, Gaia DR2 907596412929066240, USNO-A2.0 1200-05990409, Gaia EDR3 907596412929066240, SDSS J081548.70+364950.7, SDSS J081548.70+364950.80
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 15 48.71 (0.4) | 08 15 48.71 | 08 15 48.71 (0.5) | 08 15 48.71 (0.5) | 08 15 48.70 | |||||
| Declination | 36 49 50.58 (0.3) | 36 49 50.74 | 36 49 50.59 (0.3) | 36 49 50.74 (0.3) | 36 49 50.75 | |||||
| Spectral type | DBAZ | DBAZ: | DB | |||||||
| Effective temperature | [K] | 14555.0 | 13992.0 (474) | |||||||
| log(g) | [cgs] | 8.72 | 8.78 (0.3) | |||||||
| Mass | [M☉] | 1.043 | ||||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | |||||||||
| log(H/He) | -4.636 | |||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| Parallax | [mas] | 1.69 (0.5) | 1.67 (0.6) | 1.67 (0.6) | ||||||
| Distance | [pc] | 590.84 (162) | 598.90 (199) | 598.91 (199) | ||||||
| Composition | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -0.563342843 (0.5) | -0.044190866 (1) | -0.044 (1) | ||||||
| Proper motion (declination) | [mas/yr] | -9.943277872 (0.3) | -10.16568292 (0.7) | -10.166 (0.7) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 19.20 (0.3) | |||||||||
| V magnitude | ||||||||||
| R magnitude | 19.20 (0.3) | |||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 19.82 (0.03) | 19.82 (0.03) | 19.82 (0.04) | |||||||
| g magnitude | 19.82 (0.01) | 19.82 (0.01) | 19.83 (0.02) | |||||||
| r magnitude | 20.05 (0.02) | 20.05 (0.02) | 20.05 (0.02) | |||||||
| i magnitude | 20.30 (0.03) | 20.30 (0.03) | 20.30 (0.03) | |||||||
| z magnitude | 20.42 (0.1) | 20.42 (0.1) | 20.39 (0.1) | |||||||
| G magnitude | 19.93 (0.07) | 20.00 | 20.00 (0.007) | |||||||
| BP magnitude | 20.02 (0.07) | 19.76 | ||||||||
| RP magnitude | 19.90 (0.08) | 19.79 | ||||||||
| Pan g magnitude | 19.84 (0.01) | |||||||||
| Pan r magnitude | 20.06 (0.02) | |||||||||
| Pan i magnitude | 20.27 (0.01) | |||||||||
| Pan z magnitude | 20.47 (0.06) | |||||||||
| Pan y magnitude | 20.08 (0.07) | |||||||||
| E(B-V) | 0.035 | |||||||||
* 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.