All names: SDSS J154038.66+450710.0, GALEX J154038.7+450710, WD 1539+452, Gaia EDR3 1397586515647055616, SDSS J154038.67+450710.1, SDSS J154038.67+450710.0, Gaia DR2 1397586515647055616, Gaia DR3 1397586515647055616, WIRED J154038.67+450710.0
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Eisenstein et al. 2006 | White Dwarf Catalog (McCook & Sion 1999) | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 15 40 38.64 (0.1) | 15 40 38.67 | 15 40 38.65 (0.1) | 15 40 38.64 | 15 40 38.67 (0.1) | 15 40 38.67 | 15 40 38.69 | 15 40 38.67 | |||||
Declination | 45 07 09.33 (0.1) | 45 07 10.04 | 45 07 09.36 (0.2) | 45 07 09.33 | 45 07 10.22 (0.1) | 45 07 10.07 | 45 07 06.60 | 45 07 10.07 | |||||
Spectral type | DA | DA | DA | DA_auto | DA | DA | DA | ||||||
Effective temperature | [K] | 8706.0 | 8555.0 (222) | 8943.0 (79) | 8824.0 (90) | ||||||||
log(g) | [cgs] | 7.89 | 7.91 (0.05) | 8.14 (0.2) | 8.03 (0.2) | ||||||||
Mass | [M☉] | 0.535 | 0.541 (0.04) | 0.614 (0.1) | |||||||||
log(Luminosity) | [L☉] | ||||||||||||
Cooling age | [Gyr] | 0.7478 | |||||||||||
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] | 6.19 (0.1) | 5.99 (0.2) | 6.19 | 6.19 (0.1) | ||||||||
Distance | [pc] | 161.44 (4) | 166.86 (5) | 161.44 | 161.44 (4) | ||||||||
Composition | H | ||||||||||||
Proper motion (right ascension) | [mas/yr] | -19.77531155 (0.1) | -19.58951714 (0.3) | -19.775 (0.1) | -17.3 | ||||||||
Proper motion (declination) | [mas/yr] | -55.4532311 (0.2) | -55.32859276 (0.3) | -55.453 (0.2) | -53.4 | ||||||||
Variability | |||||||||||||
Magnetic | |||||||||||||
Bd | [MG] | ||||||||||||
Infrared excess (disk) | |||||||||||||
Binarity | |||||||||||||
B magnitude | |||||||||||||
V magnitude | |||||||||||||
R magnitude | |||||||||||||
I magnitude | |||||||||||||
J magnitude | |||||||||||||
H magnitude | |||||||||||||
K magnitude | |||||||||||||
u magnitude | 19.08 (0.02) | 19.08 (0.02) | 19.08 (0.03) | 19.08 | 19.08 (0.03) | ||||||||
g magnitude | 18.67 (0.008) | 18.67 (0.008) | 18.69 (0.02) | 18.69 | 18.69 (0.02) | ||||||||
r magnitude | 18.65 (0.009) | 18.65 (0.009) | 18.64 (0.02) | 18.63 | 18.64 (0.02) | ||||||||
i magnitude | 18.72 (0.01) | 18.72 (0.01) | 18.70 (0.01) | 18.69 | 18.71 (0.01) | ||||||||
z magnitude | 18.94 (0.04) | 18.95 (0.04) | 18.94 (0.04) | 18.93 | 18.96 (0.04) | ||||||||
G magnitude | 18.61 (0.02) | 18.64 | 18.61 | 18.61 (0.003) | |||||||||
BP magnitude | 18.77 (0.02) | 18.72 | |||||||||||
RP magnitude | 18.43 (0.02) | 18.39 | |||||||||||
Pan g magnitude | 18.67 (0.009) | ||||||||||||
Pan r magnitude | 18.68 (0.007) | ||||||||||||
Pan i magnitude | 18.74 (0.004) | ||||||||||||
Pan z magnitude | 18.87 (0.009) | ||||||||||||
Pan y magnitude | 18.94 (0.03) | ||||||||||||
E(B-V) | 0.016 |
* 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.