All names: SDSS J083629.26-040640.2, Gaia EDR3 3071542150883820416, GALEX J083629.2-040640, Gaia DR3 3071542150883820416, SDSS J083629.27-040640.2, SDSS J083629.27-040640.20, Gaia DR2 3071542150883820416
| Parameter | Unit | Gaia EDR3 | SDSS DR12 | Bedard et al. 2020 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | Genest-Beaulieu & Bergeron 2019 (photometric) | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 36 29.27 (0.5) | 08 36 29.26 | 08 36 29.27 (0.5) | 08 36 29.27 (0.5) | 08 36 29.27 | ||||||
| Declination | -04 06 40.24 (0.3) | -04 06 40.23 | -04 06 40.24 (0.3) | -04 06 40.19 (0.3) | -04 06 40.23 | ||||||
| Spectral type | DB | DB | DB | DB+MS | |||||||
| Effective temperature | [K] | 33841.0 (1791) | 31572.0 | 27850.0 | 30620.0 (912) | ||||||
| log(g) | [cgs] | 7.82 (0.2) | 7.67 | 7.54 | 7.86 (0.1) | ||||||
| Mass | [M☉] | 0.53 (0.09) | 0.464 | 0.405 | 0.543 (0.05) | ||||||
| log(Luminosity) | [L☉] | -0.59 (0.1) | |||||||||
| Cooling age | [Gyr] | 0.0065 (0.001) | |||||||||
| log(H/He) | -3.191 | ||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| log(N/He) | |||||||||||
| log(O/He) | |||||||||||
| log(Na/He) | |||||||||||
| log(Mg/He) | |||||||||||
| log(Al/He) | |||||||||||
| log(Si/He) | |||||||||||
| log(P/He) | |||||||||||
| log(S/He) | |||||||||||
| log(Cl/He) | |||||||||||
| log(Sc/He) | |||||||||||
| log(Ti/He) | |||||||||||
| log(V/He) | |||||||||||
| log(Cr/He) | |||||||||||
| log(Mn/He) | |||||||||||
| log(Fe/He) | |||||||||||
| log(Co/He) | |||||||||||
| log(Ni/He) | |||||||||||
| log(Cu/He) | |||||||||||
| log(Zn/He) | |||||||||||
| log(Ga/He) | |||||||||||
| log(Ge/He) | |||||||||||
| log(Sr/He) | |||||||||||
| Parallax | [mas] | 0.71 (0.5) | 0.86 (0.6) | 0.71 (0.5) | |||||||
| Distance | [pc] | 1404.37 (986) | 1156.67 (767) | 1404.30 (986) | |||||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -5.468018336 (0.6) | -5.729189798 (1) | -5.468 (0.6) | |||||||
| Proper motion (declination) | [mas/yr] | -3.607701758 (0.5) | -3.611860382 (0.6) | -3.608 (0.5) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | ||||||||||
| B magnitude | |||||||||||
| V magnitude | |||||||||||
| R magnitude | |||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.61 (0.03) | 19.61 (0.04) | 19.61 (0.04) | ||||||||
| g magnitude | 19.78 (0.01) | 19.79 (0.01) | 19.80 (0.02) | ||||||||
| r magnitude | 20.19 (0.02) | 20.19 (0.02) | 20.18 (0.02) | ||||||||
| i magnitude | 20.43 (0.04) | 20.43 (0.04) | 20.45 (0.04) | ||||||||
| z magnitude | 21.23 (0.4) | 21.23 (0.4) | 21.02 (0.3) | ||||||||
| G magnitude | 19.99 (0.05) | 20.05 | 19.99 (0.005) | ||||||||
| BP magnitude | 19.80 (0.05) | 19.69 | |||||||||
| RP magnitude | 19.94 (0.09) | 20.03 | |||||||||
| Pan g magnitude | |||||||||||
| Pan r magnitude | |||||||||||
| Pan i magnitude | |||||||||||
| Pan z magnitude | |||||||||||
| Pan y magnitude | |||||||||||
| E(B-V) | 0.029 | ||||||||||
* 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.