WD J1557+0916
All names: SDSS J155720.78+091624.7, Gaia DR3 4454599238843776128, Gaia DR2 4454599238843776128, SDSS J155720.77+091624.7, SDSS J1557, Gaia EDR3 4454599238843776128, WD 1554+094
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Farihi et al. 2012 | Tremblay et al. 2011 | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 15 57 20.77 (0.2) | 15 57 20.78 | 15 57 20.77 (0.2) | 15 57 21.60 | 15 57 20.78 | 15 57 20.35 | 15 57 20.78 | ||||||
| Declination | 09 16 24.37 (0.2) | 09 16 24.70 | 09 16 24.38 (0.2) | 09 16 12.00 | 09 16 24.70 | 09 16 18.48 | 09 16 24.70 | ||||||
| Spectral type | DAZ | DAZ | DA | DA_auto | DA | DA | DA | ||||||
| Effective temperature | [K] | 13428.0 | 22810.0 (40) | 23240.0 (630) | 21990.0 (403) | 22212.0 (392) | |||||||
| log(g) | [cgs] | 6.87 | 7.54 (0.01) | 7.67 (0.09) | 7.67 (0.06) | 7.69 (0.06) | |||||||
| Mass | [M☉] | 0.216 | 0.42 (0.01) | 0.47 (0.04) | 0.493 (0.03) | ||||||||
| log(Luminosity) | [L☉] | ||||||||||||
| Cooling age | [Gyr] | 0.0240 | |||||||||||
| 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] | 1.78 (0.2) | 1.73 (0.2) | ||||||||||
| Distance | [pc] | 562.85 (63) | 578.27 (80) | 566.00 (2) | |||||||||
| Composition | H | H | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | -10.2019975 (0.2) | -10.22348519 (0.4) | -9.4 | |||||||||
| Proper motion (declination) | [mas/yr] | -25.9882726 (0.2) | -26.10860738 (0.3) | -23.2 | |||||||||
| Variability | |||||||||||||
| Magnetic | |||||||||||||
| Bd | [MG] | ||||||||||||
| Infrared excess (disk) | yes | ||||||||||||
| Binarity | |||||||||||||
| B magnitude | |||||||||||||
| V magnitude | |||||||||||||
| R magnitude | |||||||||||||
| I magnitude | |||||||||||||
| J magnitude | 18.82 (0.06) | ||||||||||||
| H magnitude | 19.03 (0.1) | ||||||||||||
| K magnitude | 18.35 (0.1) | ||||||||||||
| u magnitude | 18.51 (0.02) | 18.50 (0.02) | 18.53 (0.03) | 18.53 | 18.53 (0.03) | ||||||||
| g magnitude | 18.43 (0.007) | 18.45 (0.01) | 18.43 (0.01) | 18.43 | 18.44 (0.01) | ||||||||
| r magnitude | 18.81 (0.01) | 18.81 (0.01) | 18.77 (0.02) | 18.77 | 18.79 (0.02) | ||||||||
| i magnitude | 19.10 (0.01) | 19.13 (0.01) | 19.10 (0.02) | 19.09 | 19.12 (0.02) | ||||||||
| z magnitude | 19.23 (0.05) | 19.34 (0.04) | 19.23 (0.05) | 19.23 | 19.23 (0.05) | ||||||||
| G magnitude | 18.61 (0.02) | 18.64 | |||||||||||
| BP magnitude | 18.52 (0.02) | 18.51 | |||||||||||
| RP magnitude | 18.81 (0.04) | 18.80 | |||||||||||
| Pan g magnitude | 18.47 (0.006) | ||||||||||||
| Pan r magnitude | 18.80 (0.007) | ||||||||||||
| Pan i magnitude | 19.08 (0.008) | ||||||||||||
| Pan z magnitude | 19.27 (0.02) | ||||||||||||
| Pan y magnitude | 19.33 (0.02) | ||||||||||||
| E(B-V) | 0.036 | ||||||||||||
* Constant surface field
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