GD 8
All names: WD 0037+312, 2MASS J00395215+3132292, Gaia DR2 361416691890856704, GALEX J003952.2+313226, GD 8, [WXD99] J003951.92+313231.7, Gaia EDR3 361416691890856704, 1SWASP J003952.15+313229.3, UCAC4 608-001929, [ZEH2003] RX J0039.8+3132 1, TIC 267738889, 1RXS J003952.8+313228, Gaia DR3 361416691890856704, GCRV 21683, RX J0039.8+3132, WD 0037+31, EGGR 204, GEN# +6.10060008
| 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 | 00 39 52.26 (0.04) | 00 39 52.26 (0.05) | 00 39 52.26 | 00 39 52.17 (0.04) | 00 39 55.61 | |||||
| Declination | 31 32 28.17 (0.03) | 31 32 28.20 (0.04) | 31 32 28.17 | 31 32 29.13 (0.03) | 31 32 34.08 | |||||
| Spectral type | DA | DA | DA | DA1.0 | DA1 | |||||
| Effective temperature | [K] | 27779.0 | 51350.0 (994) | 55845.0 (3480) | ||||||
| log(g) | [cgs] | 7.23 | 7.77 (0.07) | 7.89 (0.03) | ||||||
| Mass | [M☉] | 0.349 | 0.59 (0.03) | 0.651 (0.02) | ||||||
| log(Luminosity) | [L☉] | |||||||||
| Cooling age | [Gyr] | 0.0119 | ||||||||
| 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] | 6.94 (0.05) | 6.92 (0.06) | 6.94 | 6.94 (0.05) | |||||
| Distance | [pc] | 144.11 (0.9) | 144.53 (1) | 152.00 | 144.11 | 144.11 (0.9) | ||||
| Composition | H | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 75.03841176 (0.05) | 74.81608601 (0.09) | 75.038 (0.05) | ||||||
| Proper motion (declination) | [mas/yr] | -60.33602471 (0.04) | -60.74904291 (0.09) | -60.336 (0.04) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 14.42 (0.001) | |||||||||
| V magnitude | 14.70 (0.001) | |||||||||
| R magnitude | 14.84 (0.001) | |||||||||
| I magnitude | 15.05 (0.002) | |||||||||
| J magnitude | 15.36 (0.04) | |||||||||
| H magnitude | 15.48 (0.1) | |||||||||
| K magnitude | 15.48 (0.2) | |||||||||
| u magnitude | ||||||||||
| g magnitude | 14.47 (0.03) | |||||||||
| r magnitude | 14.94 (0.03) | |||||||||
| i magnitude | 15.32 (0.2) | |||||||||
| z magnitude | ||||||||||
| G magnitude | 14.65 (0.002) | 14.66 | 14.65 | 14.65 (0.003) | ||||||
| BP magnitude | 14.49 (0.002) | 14.45 | ||||||||
| RP magnitude | 14.95 (0.002) | 14.96 | ||||||||
| Pan g magnitude | 14.49 (0.003) | |||||||||
| Pan r magnitude | 14.92 (0.003) | |||||||||
| Pan i magnitude | 15.29 (0.002) | |||||||||
| Pan z magnitude | 15.56 (0.005) | |||||||||
| Pan y magnitude | 15.76 (0.004) | |||||||||
| E(B-V) | 0.022 | |||||||||
* Constant surface field
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