All names: SDSS J093420.06+051209.3, WD 0931+054, [HHD2009] SDSS J0934+0512, SDSS J093420.06+051209.2, SDSS J093420.05+051209.3, [SGR2010] J0934+0512, GALEX J093420.0+051209, WIRED J093420.06+051209.3, Gaia DR3 3852283951649817344, Gaia EDR3 3852283951649817344, Gaia DR2 3852283951649817344
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | sdss-wdms.org (29/04/2016) | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 34 20.05 (0.4) | 09 34 20.06 | 09 34 20.05 (0.8) | 09 34 20.06 | 09 34 20.06 (0.4) | 09 34 20.06 | 09 34 19.46 | 09 34 20.06 | ||||
| Declination | 05 12 09.29 (0.3) | 05 12 09.31 | 05 12 09.29 (0.7) | 05 12 09.29 | 05 12 09.25 (0.3) | 05 12 09.30 | 05 12 06.84 | 05 12 09.31 | ||||
| Spectral type | DA+M | DA+M | DA+dM | DA+M | DA d | DA+M | ||||||
| Effective temperature | [K] | 61062.0 (3008) | 63555.0 (8428) | 10317.0 (175) | 10385.0 (186) | |||||||
| log(g) | [cgs] | 7.41 (0.2) | 7.83 (0.4) | 7.96 (0.5) | 8.27 (0.4) | |||||||
| Mass | [M☉] | 0.49 (0.05) | 0.65 (0.2) | |||||||||
| log(Luminosity) | [L☉] | 0.82 (0.1) | ||||||||||
| Cooling age | [Gyr] | 0.0001 | ||||||||||
| 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] | 0.58 (0.4) | 0.58 (0.4) | |||||||||
| Distance | [pc] | 1719.32 (1130) | 123.00 (6) | 1719.39 (1130) | ||||||||
| Composition | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -6.332419346 (0.5) | -6.332 (0.5) | 2.1 | ||||||||
| Proper motion (declination) | [mas/yr] | 2.903948366 (0.4) | 2.904 (0.4) | 3.1 | ||||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | WDMS | WDMS | WDMS | |||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | 16.48 (0.03) | |||||||||||
| K magnitude | 16.37 (0.04) | |||||||||||
| u magnitude | 18.29 (0.01) | 18.31 | 18.29 (0.02) | 18.31 (0.03) | 18.31 | 18.32 (0.03) | ||||||
| g magnitude | 18.59 (0.008) | 18.60 | 18.59 (0.008) | 18.60 (0.03) | 18.60 | 18.60 (0.03) | ||||||
| r magnitude | 18.72 (0.01) | 18.73 | 18.72 (0.01) | 18.73 (0.02) | 18.73 | 18.72 (0.02) | ||||||
| i magnitude | 18.44 (0.01) | 18.44 | 18.43 (0.01) | 18.44 (0.02) | 18.44 | 18.43 (0.02) | ||||||
| z magnitude | 18.18 (0.02) | 18.18 | 18.18 (0.02) | 18.18 (0.03) | 18.18 | 18.18 (0.03) | ||||||
| G magnitude | 18.57 (0.02) | 18.56 | 18.57 (0.005) | |||||||||
| BP magnitude | 18.62 (0.02) | 18.62 | ||||||||||
| RP magnitude | 18.09 (0.02) | 18.08 | ||||||||||
| Pan g magnitude | 18.66 (0.008) | |||||||||||
| Pan r magnitude | 18.75 (0.005) | |||||||||||
| Pan i magnitude | 18.45 (0.005) | |||||||||||
| Pan z magnitude | 18.26 (0.008) | |||||||||||
| Pan y magnitude | 18.12 (0.01) | |||||||||||
| 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.