All names: SDSS J094904.72+013744.3, SDSS J094904.72+013745.2, GALEX J094904.7+013744, Gaia DR2 3846712382635089536, WD 0946+018, WISEA J094904.72+013744.2, Gaia EDR3 3846712382635089536, Gaia DR3 3846712382635089536, LAMOST J094904.72+013745.1, UCAC4 459-046178, WISE J094904.71+013744.1, SDSS J094904.72+013745.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Stilism | Guo et al. 2015 | Tremblay et al. 2011 | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Kleinman et al. 2004 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 09 49 04.71 (0.2) | 09 49 04.72 | 09 49 04.71 | 09 49 04.72 (0.2) | 09 49 04.72 | 09 49 03.86 | 09 49 04.72 | 09 49 04.72 | ||||||
| Declination | 01 37 44.00 (0.2) | 01 37 45.19 | 01 37 44.00 | 01 37 45.19 (0.2) | 01 37 45.18 | 01 37 41.88 | 01 37 45.19 | 01 37 45.19 | ||||||
| Spectral type | DA | DA | DA | DA | DA | DA2.8 | DA | DA | ||||||
| Effective temperature | [K] | 19090.0 (110) | 15464.0 (278) | 18195.0 (72) | 18625.0 (76) | 18261.0 (60) | ||||||||
| log(g) | [cgs] | 7.84 (0.02) | 7.81 (0.03) | 7.78 (0.01) | 7.79 (0.01) | 7.81 (0.01) | ||||||||
| Mass | [M☉] | 0.54 (0.01) | 0.509 (0.02) | 0.519 (0.005) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 0.0589 | ||||||||||||
| 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] | 7.85 (0.2) | 7.85 | 7.85 (0.2) | ||||||||||
| Distance | [pc] | 127.42 (3) | 127.42 | 127.42 (3) | ||||||||||
| Composition | H | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | -9.730520394 (0.2) | -9.731 (0.2) | -5.7 | -7.0 | |||||||||
| Proper motion (declination) | [mas/yr] | -74.30836315 (0.2) | -74.308 (0.2) | -75.2 | -75.0 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 16.51 (0.05) | |||||||||||||
| V magnitude | 16.57 (0.01) | |||||||||||||
| R magnitude | ||||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 16.72 (0.01) | |||||||||||||
| H magnitude | 16.68 (0.03) | |||||||||||||
| K magnitude | 16.83 (0.05) | |||||||||||||
| u magnitude | 16.64 (0.007) | 16.64 (0.007) | 16.66 (0.02) | 16.66 | 16.67 (0.02) | 16.66 (0.02) | ||||||||
| g magnitude | 16.39 (0.004) | 16.39 (0.004) | 16.42 (0.02) | 16.42 | 16.43 (0.02) | 16.42 (0.02) | ||||||||
| r magnitude | 16.65 (0.004) | 16.64 (0.004) | 16.69 (0.02) | 16.69 | 16.69 (0.02) | 16.69 (0.02) | ||||||||
| i magnitude | 16.88 (0.005) | 16.88 (0.005) | 16.88 (0.02) | 16.88 | 16.88 (0.02) | 16.88 (0.02) | ||||||||
| z magnitude | 17.13 (0.01) | 17.13 (0.01) | 17.15 (0.02) | 17.15 | 17.16 (0.02) | 17.15 (0.02) | ||||||||
| G magnitude | 16.66 (0.005) | 16.66 | 16.66 (0.004) | |||||||||||
| BP magnitude | 16.50 (0.005) | |||||||||||||
| RP magnitude | 16.60 (0.005) | |||||||||||||
| Pan g magnitude | 16.43 (0.004) | |||||||||||||
| Pan r magnitude | 16.68 (0.002) | |||||||||||||
| Pan i magnitude | 16.92 (0.004) | |||||||||||||
| Pan z magnitude | 17.14 (0.008) | |||||||||||||
| Pan y magnitude | 17.27 (0.005) | |||||||||||||
| E(B-V) | 0.006 | |||||||||||||
* 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.