All names: WD 1544+404, Gaia EDR3 1377776717728521600, GALEX J154641.1+401916, Gaia DR3 1377776717728521600, SDSS J154641.07+401916.8, SDSS J154641.06+401916.8, Gaia DR2 1377776717728521600
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 15 46 41.07 (0.3) | 15 46 41.08 | 15 46 41.07 (0.4) | 15 46 41.08 (0.3) | 15 46 41.07 | 15 46 40.39 | 15 46 41.07 | ||||
Declination | 40 19 16.67 (0.4) | 40 19 16.74 | 40 19 16.67 (0.6) | 40 19 16.74 (0.4) | 40 19 16.85 | 40 19 10.20 | 40 19 16.85 | ||||
Spectral type | DA | DA | DA_auto | DA | DA | ||||||
Effective temperature | [K] | 23208.0 | 27969.0 (978) | 27616.0 (1074) | |||||||
log(g) | [cgs] | 6.46 | 7.16 (0.3) | 7.19 (0.3) | |||||||
Mass | [M☉] | 0.181 | 0.39 (0.06) | ||||||||
log(Luminosity) | [L☉] | ||||||||||
Cooling age | [Gyr] | ||||||||||
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] | 0.01 (0.4) | -0.39 (0.5) | 0.01 (0.4) | |||||||
Distance | [pc] | 81029.49 (2832063) | 81300.81 (2850816) | ||||||||
Composition | H | ||||||||||
Proper motion (right ascension) | [mas/yr] | -4.140545841 (0.4) | -4.919284833 (1) | -4.141 (0.4) | -1.1 | ||||||
Proper motion (declination) | [mas/yr] | -4.507593924 (0.6) | -5.421283641 (1) | -4.508 (0.6) | -5.2 | ||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | |||||||||||
H magnitude | |||||||||||
K magnitude | |||||||||||
u magnitude | 19.84 (0.04) | 19.73 (0.04) | 19.74 (0.04) | 19.74 | 19.76 (0.04) | ||||||
g magnitude | 19.92 (0.02) | 19.92 (0.02) | 19.94 (0.02) | 19.94 | 19.94 (0.02) | ||||||
r magnitude | 20.37 (0.03) | 20.37 (0.03) | 20.38 (0.03) | 20.38 | 20.39 (0.03) | ||||||
i magnitude | 20.64 (0.05) | 20.67 (0.05) | 20.68 (0.05) | 20.67 | 20.68 (0.05) | ||||||
z magnitude | 20.95 (0.2) | 20.84 (0.2) | 20.79 (0.2) | 20.78 | 20.79 (0.2) | ||||||
G magnitude | 20.14 (0.05) | 20.22 | 20.14 (0.006) | ||||||||
BP magnitude | 20.03 (0.05) | 20.00 | |||||||||
RP magnitude | 20.15 (0.09) | 20.09 | |||||||||
Pan g magnitude | 19.98 (0.02) | ||||||||||
Pan r magnitude | 20.35 (0.01) | ||||||||||
Pan i magnitude | 20.72 (0.02) | ||||||||||
Pan z magnitude | 20.95 (0.04) | ||||||||||
Pan y magnitude | |||||||||||
E(B-V) | 0.022 |
* 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.