EGGR 439
All names: PG 1422+028, Gaia EDR3 3666701575885221632, WD 1422+028, EGGR 439, Gaia DR3 3666701575885221632, SDSS J142437.34+023418.8, GALEX J142437.3+023419, USNO-B1.0 0925-00313262, WD 1421+028, Gaia DR2 3666701575885221632
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 14 24 37.36 (0.06) | 14 24 37.36 (0.08) | 14 24 37.36 | 14 24 37.35 (0.06) | 14 24 36.94 | |||||
| Declination | 02 34 18.72 (0.05) | 02 34 18.73 (0.07) | 02 34 18.72 | 02 34 18.81 (0.05) | 02 34 27.48 | |||||
| Spectral type | DA | DA | DA | DA2.3 | DA2 | |||||
| Effective temperature | [K] | 18429.0 | 22230.0 (397) | 20677.0 (568) | ||||||
| log(g) | [cgs] | 7.23 | 7.94 (0.05) | 7.32 (0.03) | ||||||
| Mass | [M☉] | 0.309 | 0.59 (0.03) | 0.343 (0.01) | ||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.0449 | ||||||||
| 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] | 4.10 (0.07) | 4.19 (0.1) | 4.10 | 4.10 (0.07) | |||||
| Distance | [pc] | 243.79 (4) | 238.52 (5) | 180.00 | 243.79 | 243.80 (4) | ||||
| Composition | H | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 5.172356393 (0.08) | 5.14164149 (0.2) | 5.172 (0.08) | ||||||
| Proper motion (declination) | [mas/yr] | -5.240112493 (0.06) | -5.111528664 (0.1) | -5.24 (0.06) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 16.90 | |||||||||
| V magnitude | 16.77 | |||||||||
| R magnitude | 16.60 | |||||||||
| I magnitude | ||||||||||
| J magnitude | ||||||||||
| H magnitude | ||||||||||
| K magnitude | ||||||||||
| u magnitude | 16.43 (0.007) | |||||||||
| g magnitude | 16.45 (0.004) | |||||||||
| r magnitude | 16.84 (0.005) | |||||||||
| i magnitude | 17.11 (0.006) | |||||||||
| z magnitude | 16.98 (0.01) | |||||||||
| G magnitude | 16.65 (0.005) | 16.69 | 16.65 | 16.65 (0.003) | ||||||
| BP magnitude | 16.58 (0.005) | 16.55 | ||||||||
| RP magnitude | 16.84 (0.01) | 16.86 | ||||||||
| Pan g magnitude | 16.50 (0.004) | |||||||||
| Pan r magnitude | 16.85 (0.002) | |||||||||
| Pan i magnitude | 17.16 (0.002) | |||||||||
| Pan z magnitude | 17.42 (0.008) | |||||||||
| Pan y magnitude | 17.59 (0.01) | |||||||||
| E(B-V) | 0.028 | |||||||||
* Constant surface field
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