All names: 2220+121, SDSS J222230.79+122154.8, 22225+1221, Gaia DR2 2730707290168343680, WD 2220+121, Gaia DR3 2730707290168343680, Gaia EDR3 2730707290168343680, 2MASS J22223080+1221550, TIC 404576931, SDSS J222230.78+122154.8
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Leggett et al. 2018 | Stilism | Limoges et al. 2015 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 22 30.79 (0.1) | 22 22 30.79 (0.1) | 22 22 32.74 | |||||
| Declination | 12 21 54.69 (0.09) | 12 21 54.80 (0.09) | 12 21 40.68 | |||||
| Spectral type | DC12.5 | DC | DC | DC | ||||
| Effective temperature | [K] | 4032.0 (98) | 4250.0 (128) | |||||
| log(g) | [cgs] | 7.79 (0.06) | 7.74 (0.08) | |||||
| Mass | [M☉] | 0.453 (0.04) | 0.43 (0.04) | |||||
| log(Luminosity) | [L☉] | -4.20 | ||||||
| Cooling age | [Gyr] | 6.8890 (0.6) | ||||||
| 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] | -0.08 (0.1) | 27.38 (0.4) | 24.00 (1) | ||||
| Distance | [pc] | 36.52 (0.6) | 41.70 (3) | |||||
| Composition | H | |||||||
| Proper motion (right ascension) | [mas/yr] | 0.172528613 (0.1) | 0.173 (0.1) | |||||
| Proper motion (declination) | [mas/yr] | -6.659751301 (0.1) | -6.66 (0.1) | |||||
| Variability | ||||||||
| Magnetic | ||||||||
| Bd | [MG] | |||||||
| Infrared excess (disk) | ||||||||
| Binarity | ||||||||
| B magnitude | 17.92 | |||||||
| V magnitude | 17.58 | |||||||
| R magnitude | ||||||||
| I magnitude | ||||||||
| J magnitude | 16.04 (0.09) | |||||||
| H magnitude | 15.70 (0.1) | |||||||
| K magnitude | ||||||||
| u magnitude | 19.49 (0.03) | 19.48 | ||||||
| g magnitude | 17.91 (0.006) | 17.90 | ||||||
| r magnitude | 17.31 (0.006) | 17.30 | ||||||
| i magnitude | 17.07 (0.006) | 17.07 | ||||||
| z magnitude | 16.95 (0.01) | 16.97 | ||||||
| G magnitude | 17.33 (0.01) | 17.33 (0.003) | ||||||
| BP magnitude | 17.79 (0.01) | |||||||
| RP magnitude | 16.78 (0.01) | |||||||
| Pan g magnitude | 17.83 (0.006) | |||||||
| Pan r magnitude | 17.30 (0.002) | |||||||
| Pan i magnitude | 17.10 (0.003) | |||||||
| Pan z magnitude | 17.01 (0.004) | |||||||
| Pan y magnitude | 16.95 (0.005) | |||||||
| E(B-V) | 0.001 | |||||||
* 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.