GD 234
All names: GD 234, TIC 330101285, USNO-B1.0 1120-00603151, 1SWASP J213636.12+220433.5, Gaia DR3 1793946026371051648, Gaia EDR3 1793946026371051648, EGGR 227, WD 2134+218, uvby98 610060234, WDJ213636.12+220433.34, WD 2134+21, GEN# +6.10060234, Gaia DR2 1793946026371051648, 2MASS J21363611+2204334, GALEX J213636.0+220432
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | MWDD H | Gaia DR2 | Stilism | Koester et al. 2014 | Gianninas et al. 2011 | Koester et al. 2009 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 21 36 36.01 (0.03) | 21 36 36.02 (0.04) | 21 36 36.01 | 21 36 36.12 (0.03) | 21 36 36.02 | 21 36 35.88 | |||||||
| Declination | 22 04 33.37 (0.03) | 22 04 33.37 (0.04) | 22 04 33.37 | 22 04 33.35 (0.03) | 22 04 33.37 | 22 04 35.40 | |||||||
| Spectral type | DA | DA | DA | DA2.6 | DA3 | ||||||||
| Effective temperature | [K] | 16720.0 | 17970.0 (244) | 19180.0 (314) | 18001.0 (19) | 17569.0 (195) | |||||||
| log(g) | [cgs] | 7.93 | 8.04 (0.09) | 8.14 (0.05) | 7.86 (0.004) | 7.99 (0.009) | |||||||
| Mass | [M☉] | 0.579 | 0.639 (0.05) | 0.7 (0.03) | 0.611 (0.007) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.1220 | |||||||||||
| log(H/He) | |||||||||||||
| log(C/He) | |||||||||||||
| log(Ca/He) | |||||||||||||
| log(Ca/H) | |||||||||||||
| log(C/H) | <-8.10 | ||||||||||||
| log(N/H) | |||||||||||||
| log(O/H) | |||||||||||||
| log(Na/H) | |||||||||||||
| log(Mg/H) | |||||||||||||
| log(Al/H) | |||||||||||||
| log(Si/H) | -8.1 (0.1) | ||||||||||||
| 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] | 20.15 (0.03) | 20.09 (0.05) | 20.15 | 20.15 (0.03) | 20.09 (0.05) | |||||||
| Distance | [pc] | 49.62 (0.08) | 49.77 (0.1) | 48.00 | 49.62 | 49.62 (0.08) | 49.77 (0.1) | ||||||
| Composition | H | H | |||||||||||
| Proper motion (right ascension) | [mas/yr] | -97.85552296 (0.03) | -97.92847534 (0.08) | -97.856 (0.03) | -97.92847534 | ||||||||
| Proper motion (declination) | [mas/yr] | 1.569731032 (0.03) | 1.65140788 (0.08) | 1.57 (0.03) | 1.65140788 | ||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | |||||||||||||
| Binarity | |||||||||||||
| B magnitude | 14.41 | ||||||||||||
| V magnitude | 14.48 (0.09) | 14.45 | 14.45 | ||||||||||
| R magnitude | 14.80 | ||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 14.80 (0.04) | ||||||||||||
| H magnitude | 15.02 (0.08) | ||||||||||||
| K magnitude | 14.90 (0.1) | ||||||||||||
| u magnitude | |||||||||||||
| g magnitude | |||||||||||||
| r magnitude | |||||||||||||
| i magnitude | |||||||||||||
| z magnitude | |||||||||||||
| G magnitude | 14.48 (0.002) | 14.51 | 14.48 | 14.48 (0.003) | 14.51 | ||||||||
| BP magnitude | 14.42 (0.002) | 14.40 | 14.40 | ||||||||||
| RP magnitude | 14.64 (0.001) | 14.64 | 14.64 | ||||||||||
| Pan g magnitude | 14.35 (0.004) | ||||||||||||
| Pan r magnitude | 14.67 (0.0008) | ||||||||||||
| Pan i magnitude | 14.96 (0.003) | ||||||||||||
| Pan z magnitude | 15.21 (0.003) | ||||||||||||
| Pan y magnitude | 15.37 (0.004) | ||||||||||||
| E(B-V) | 0.003 | ||||||||||||
* Constant surface field
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