All names: GALEX J084535.1+234806, Gaia EDR3 689469077099114368, WD 0842+239, WIRED J084535.15+234806.0, SDSS J084535.15+234806.0, WISE J084535.15+234807.4, SDSS J084535.04+234806.1, WISEA J084535.15+234807.4
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 08 45 35.14 (0.3) | 08 45 35.15 | 08 45 35.15 | 08 45 35.15 | 08 45 35.06 | 08 45 35.15 | ||||
| Declination | 23 48 05.83 (0.2) | 23 48 06.02 | 23 48 06.01 | 23 48 06.02 | 23 48 02.16 | 23 48 06.03 | ||||
| Spectral type | DA+M | DA+M | DA+M | DA dM | DA+M | |||||
| Effective temperature | [K] | 42380.0 (3123) | 45515.0 (4199) | 10192.0 (109) | ||||||
| log(g) | [cgs] | 7.76 (0.3) | 7.70 (0.4) | 8.66 (0.6) | ||||||
| Mass | [M☉] | 0.56 (0.1) | 0.55 (0.2) | |||||||
| log(Luminosity) | [L☉] | -0.11 (0.3) | ||||||||
| Cooling age | [Gyr] | 0.0031 (0.001) | ||||||||
| log(H/He) | ||||||||||
| log(C/He) | ||||||||||
| log(Ca/He) | ||||||||||
| log(Ca/H) | ||||||||||
| log(C/H) | ||||||||||
| log(N/H) | ||||||||||
| log(O/H) | ||||||||||
| log(Na/H) | ||||||||||
| log(Mg/H) | ||||||||||
| log(Al/H) | ||||||||||
| log(Si/H) | ||||||||||
| log(P/H) | ||||||||||
| log(S/H) | ||||||||||
| log(Sc/H) | ||||||||||
| log(Ti/H) | ||||||||||
| log(Cr/H) | ||||||||||
| log(Mn/H) | ||||||||||
| log(Fe/H) | ||||||||||
| log(Ni/H) | ||||||||||
| Parallax | [mas] | 1.17 (0.4) | ||||||||
| Distance | [pc] | 854.17 (271) | 411.00 (127) | |||||||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -2.230593462 (0.4) | ||||||||
| Proper motion (declination) | [mas/yr] | 2.067980378 (0.3) | ||||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | WDMS | WDMS | ||||||||
| B magnitude | ||||||||||
| V magnitude | ||||||||||
| R magnitude | ||||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 18.70 (0.02) | 18.80 | 18.70 (0.02) | 18.79 | 18.76 (0.03) | |||||
| g magnitude | 18.96 (0.01) | 19.03 | 18.96 (0.01) | 19.02 | 19.00 (0.02) | |||||
| r magnitude | 19.12 (0.01) | 19.26 | 19.12 (0.01) | 19.25 | 19.25 (0.02) | |||||
| i magnitude | 18.82 (0.01) | 19.03 | 18.82 (0.01) | 19.02 | 19.03 (0.02) | |||||
| z magnitude | 18.47 (0.03) | 18.57 | 18.47 (0.03) | 18.55 | 18.57 (0.04) | |||||
| G magnitude | 19.37 (0.02) | |||||||||
| BP magnitude | 19.03 (0.02) | |||||||||
| RP magnitude | 18.52 (0.03) | |||||||||
| Pan g magnitude | 19.11 (0.009) | |||||||||
| Pan r magnitude | 19.28 (0.01) | |||||||||
| Pan i magnitude | 18.97 (0.02) | |||||||||
| Pan z magnitude | 18.68 (0.02) | |||||||||
| Pan y magnitude | 18.49 (0.03) | |||||||||
| E(B-V) | 0.027 | |||||||||
* 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.