All names: SDSS J225932.23+140439.0, Gaia DR3 2815944352131513088, SDSS J225932.21+140439.2, WD 2257+138, PG 2257+138, Gaia EDR3 2815944352131513088, Gaia DR2 2815944352131513088, SDSS J225932.24+140439.0, ** SLN 46B, J225932.21+140439.2, WDS J22595+1405B, KUV 22570+1349
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Barrientos et al. 2024 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 22 59 32.24 (0.07) | 22 59 32.21 | 22 59 32.24 (0.09) | 22 59 32.24 | 22 59 32.21 (0.07) | 22 59 31.37 | ||||||||
Declination | 14 04 39.04 (0.05) | 14 04 39.28 | 14 04 39.05 (0.07) | 14 04 39.04 | 14 04 39.28 (0.05) | 14 04 36.12 | ||||||||
Spectral type | DA | DA | DA | DA | DA1.8 | DA | DA | |||||||
Effective temperature | [K] | 27799.0 (402) | 23271.0 | 28340.0 (413) | 27560.0 (403) | 28198.0 (828) | ||||||||
log(g) | [cgs] | 8.33 (0.02) | 8.15 | 8.39 (0.05) | 8.33 (0.05) | 8.38 (0.03) | ||||||||
Mass | [M☉] | 0.84 (0.02) | 0.717 | 0.87 (0.03) | 0.84 (0.03) | 0.864 (0.03) | ||||||||
log(Luminosity) | [L☉] | -1.25 | ||||||||||||
Cooling age | [Gyr] | 0.0300 | 0.0508 | 0.0525 | ||||||||||
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] | 6.73 (0.07) | 6.71 (0.1) | 6.73 | 6.73 (0.07) | |||||||||
Distance | [pc] | 148.68 (2) | 149.00 (2) | 164.00 | 158.00 | 148.68 | 148.68 (2) | |||||||
Composition | H | H | ||||||||||||
Proper motion (right ascension) | [mas/yr] | 26.68990153 (0.08) | 26.62265595 (0.2) | 26.69 (0.08) | ||||||||||
Proper motion (declination) | [mas/yr] | -15.0007933 (0.07) | -15.08019609 (0.1) | -15.001 (0.07) | ||||||||||
Variability | ||||||||||||||
Magnetic | ||||||||||||||
Bd | [MG] | |||||||||||||
Infrared excess (disk) | ||||||||||||||
Binarity | ||||||||||||||
B magnitude | 16.50 | |||||||||||||
V magnitude | 16.65 | 16.65 | ||||||||||||
R magnitude | ||||||||||||||
I magnitude | ||||||||||||||
J magnitude | ||||||||||||||
H magnitude | ||||||||||||||
K magnitude | ||||||||||||||
u magnitude | 16.15 (0.006) | 16.15 (0.006) | ||||||||||||
g magnitude | 16.35 (0.004) | 16.35 (0.004) | ||||||||||||
r magnitude | 16.79 (0.005) | 16.79 (0.005) | ||||||||||||
i magnitude | 17.12 (0.006) | 17.12 (0.006) | ||||||||||||
z magnitude | 17.44 (0.02) | 17.44 (0.02) | ||||||||||||
G magnitude | 16.59 (0.004) | 16.60 | 16.59 | 16.59 (0.003) | ||||||||||
BP magnitude | 16.48 (0.004) | 16.45 | ||||||||||||
RP magnitude | 16.84 (0.008) | 16.83 | ||||||||||||
Pan g magnitude | 16.42 (0.002) | |||||||||||||
Pan r magnitude | 16.81 (0.003) | |||||||||||||
Pan i magnitude | 17.16 (0.003) | |||||||||||||
Pan z magnitude | 17.42 (0.007) | |||||||||||||
Pan y magnitude | 17.58 (0.02) | |||||||||||||
E(B-V) | 0.018 |
* 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.