All names: SDSS J140821.99+443008.0, Gaia DR2 1505397066724973312, LAMOST J140822.00+443007.9, SDSS J140821.99+443007.9, SDSS J140822.00+443007.9, SDSS J140822.00+443008.0, Gaia DR3 1505397066724973312, GALEX J140821.9+443006, WD 1406+447, Gaia EDR3 1505397066724973312
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Tremblay et al. 2011 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 14 08 21.94 (0.1) | 14 08 22.00 | 14 08 21.94 (0.2) | 14 08 22.02 (0.1) | 14 08 22.00 | 14 08 21.98 | 14 08 22.00 | |||||||
Declination | 44 30 08.30 (0.2) | 44 30 08.02 | 44 30 08.29 (0.2) | 44 30 07.94 (0.2) | 44 30 07.96 | 44 30 00.72 | 44 30 07.96 | |||||||
Spectral type | DA | DA | DA | DA | DA_auto | DA | DAH | DA | ||||||
Effective temperature | [K] | 11801.0 | 17350.0 (610) | 15799.0 (272) | 15859.0 (279) | |||||||||
log(g) | [cgs] | 7.03 | 7.38 (0.1) | 7.15 (0.08) | 7.21 (0.08) | |||||||||
Mass | [M☉] | 0.235 | 0.38 (0.03) | |||||||||||
log(Luminosity) | [L☉] | |||||||||||||
Cooling age | [Gyr] | 0.1451 | 0.1288 | |||||||||||
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] | 1.96 (0.2) | 1.77 (0.3) | 1.96 (0.2) | ||||||||||
Distance | [pc] | 511.48 (52) | 566.17 (84) | 511.48 (52) | ||||||||||
Composition | H | H | ||||||||||||
Proper motion (right ascension) | [mas/yr] | -51.39412162 (0.2) | -51.51481766 (0.3) | -51.394 (0.2) | -50.0 | |||||||||
Proper motion (declination) | [mas/yr] | 22.86181858 (0.2) | 23.28554505 (0.3) | 22.862 (0.2) | 28.6 | |||||||||
Variability | ||||||||||||||
Magnetic | ||||||||||||||
Bd | [MG] | |||||||||||||
Infrared excess (disk) | ||||||||||||||
Binarity | ||||||||||||||
B magnitude | ||||||||||||||
V magnitude | ||||||||||||||
R magnitude | ||||||||||||||
I magnitude | ||||||||||||||
J magnitude | ||||||||||||||
H magnitude | ||||||||||||||
K magnitude | ||||||||||||||
u magnitude | 19.35 (0.02) | 19.35 (0.02) | 19.33 (0.03) | 19.32 | 19.33 (0.03) | |||||||||
g magnitude | 19.00 (0.009) | 19.00 (0.009) | 19.02 (0.02) | 19.01 | 19.02 (0.02) | |||||||||
r magnitude | 19.28 (0.01) | 19.28 (0.01) | 19.26 (0.02) | 19.26 | 19.27 (0.02) | |||||||||
i magnitude | 19.53 (0.02) | 19.53 (0.02) | 19.52 (0.03) | 19.52 | 19.52 (0.03) | |||||||||
z magnitude | 19.59 (0.07) | 19.59 (0.07) | 19.59 (0.07) | 19.59 | 19.60 (0.07) | |||||||||
G magnitude | 19.14 (0.02) | 19.18 | 19.14 (0.004) | |||||||||||
BP magnitude | 19.14 (0.02) | 19.11 | ||||||||||||
RP magnitude | 19.25 (0.04) | 19.17 | ||||||||||||
Pan g magnitude | 19.04 (0.008) | |||||||||||||
Pan r magnitude | 19.27 (0.008) | |||||||||||||
Pan i magnitude | 19.52 (0.01) | |||||||||||||
Pan z magnitude | 19.73 (0.02) | |||||||||||||
Pan y magnitude | 19.74 (0.04) | |||||||||||||
E(B-V) | 0.020 |
* 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.