All names: 2MASS J07402413+2029372, Gaia EDR3 672856143597851520, SDSS J074024.13+202936.9, TIC 70549080, SDSS J074024.13+202937.0, LAMOST J074024.22+202936.6, SDSS J074024.12+202936.9, GALEX J074024.2+202938, Gaia DR3 672856143597851520, Gaia DR2 672856143597851520
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | MWDD H | Gaia DR2 | Stilism | Guo et al. 2015 | Vincent et al. 2024 | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 07 40 24.08 (0.05) | 07 40 24.13 | 07 40 24.08 (0.07) | 07 40 24.08 | 07 40 24.14 (0.05) | 07 40 24.13 | ||||||
Declination | 20 29 36.82 (0.04) | 20 29 36.93 | 20 29 36.83 (0.05) | 20 29 36.82 | 20 29 37.00 (0.04) | 20 29 36.97 | ||||||
Spectral type | DA | DA | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 19173.0 | 23362.0 (295) | 21995.0 (412) | 22847.0 (114) | |||||||
log(g) | [cgs] | 7.99 | 8.02 (0.04) | 8.15 (0.02) | 8.13 (0.02) | |||||||
Mass | [M☉] | 0.618 | 0.64 (0.02) | 0.718 (0.01) | 0.698 (0.01) | |||||||
log(Luminosity) | [L☉] | |||||||||||
Cooling age | [Gyr] | 0.0816 | ||||||||||
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] | 9.62 (0.05) | 9.53 (0.07) | 9.62 | 9.62 (0.05) | |||||||
Distance | [pc] | 103.90 (0.6) | 104.93 (0.8) | 103.90 | 103.90 (0.6) | |||||||
Composition | H | |||||||||||
Proper motion (right ascension) | [mas/yr] | -56.64947703 (0.07) | -56.7369899 (0.1) | -56.649 (0.07) | ||||||||
Proper motion (declination) | [mas/yr] | -11.33412159 (0.05) | -11.44761 (0.1) | -11.334 (0.05) | ||||||||
Variability | ||||||||||||
Magnetic | ||||||||||||
Bd | [MG] | |||||||||||
Infrared excess (disk) | ||||||||||||
Binarity | ||||||||||||
B magnitude | ||||||||||||
V magnitude | ||||||||||||
R magnitude | ||||||||||||
I magnitude | ||||||||||||
J magnitude | 16.57 (0.1) | |||||||||||
H magnitude | 16.45 (0.3) | |||||||||||
K magnitude | ||||||||||||
u magnitude | 15.69 (0.005) | 15.70 (0.005) | 15.70 (0.01) | |||||||||
g magnitude | 15.72 (0.003) | 15.72 (0.003) | 15.74 (0.01) | |||||||||
r magnitude | 16.10 (0.004) | 16.11 (0.004) | 16.10 (0.01) | |||||||||
i magnitude | 16.43 (0.005) | 16.43 (0.005) | 16.43 (0.01) | |||||||||
z magnitude | 16.74 (0.01) | 16.74 (0.01) | 16.74 (0.02) | |||||||||
G magnitude | 15.93 (0.002) | 15.96 | 15.93 | 15.93 (0.003) | ||||||||
BP magnitude | 15.85 (0.002) | 15.81 | ||||||||||
RP magnitude | 16.14 (0.004) | 16.13 | ||||||||||
Pan g magnitude | 15.81 (0.007) | |||||||||||
Pan r magnitude | 16.13 (0.002) | |||||||||||
Pan i magnitude | 16.43 (0.004) | |||||||||||
Pan z magnitude | 16.72 (0.02) | |||||||||||
Pan y magnitude | 16.90 (0.01) | |||||||||||
E(B-V) | 0.003 |
* 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.