All names: SDSS J144846.72+253839.2, SDSS J144846.71+253839.2, Gaia DR2 1267332389626676480, GALEX J144846.7+253839, Gaia EDR3 1267332389626676480, SDSS J144846.70+253839.1, Gaia DR3 1267332389626676480
Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Bedard et al. 2020 | MWDD H | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
---|---|---|---|---|---|---|---|---|---|---|---|
Right ascension | 14 48 46.70 (0.2) | 14 48 46.72 | 14 48 46.70 (0.2) | 14 48 46.73 (0.2) | 14 48 46.72 | ||||||
Declination | 25 38 39.31 (0.2) | 25 38 39.24 | 25 38 39.31 (0.3) | 25 38 39.25 (0.2) | 25 38 39.22 | ||||||
Spectral type | DA | DA | DA | DA | DA | ||||||
Effective temperature | [K] | 30000.0 (286) | 21532.0 | 29525.0 (467) | |||||||
log(g) | [cgs] | 7.78 (0.08) | 7.01 | 7.63 (0.1) | |||||||
Mass | [M☉] | 0.54 (0.03) | 0.273 | 0.492 (0.04) | |||||||
log(Luminosity) | [L☉] | -0.75 (0.05) | |||||||||
Cooling age | [Gyr] | 0.0085 (0.0004) | 0.1171 | ||||||||
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] | 1.22 (0.3) | 0.89 (0.4) | 1.23 (0.3) | |||||||
Distance | [pc] | 816.36 (205) | 1118.40 (496) | 816.33 (205) | |||||||
Composition | H | H | |||||||||
Proper motion (right ascension) | [mas/yr] | -20.14258301 (0.2) | -19.66483623 (0.8) | -20.143 (0.2) | |||||||
Proper motion (declination) | [mas/yr] | 3.596895505 (0.3) | 4.051837627 (0.8) | 3.597 (0.3) | |||||||
Variability | |||||||||||
Magnetic | |||||||||||
Bd | [MG] | ||||||||||
Infrared excess (disk) | |||||||||||
Binarity | |||||||||||
B magnitude | |||||||||||
V magnitude | |||||||||||
R magnitude | |||||||||||
I magnitude | |||||||||||
J magnitude | |||||||||||
H magnitude | |||||||||||
K magnitude | |||||||||||
u magnitude | 18.95 (0.02) | 18.95 (0.02) | 18.93 (0.03) | ||||||||
g magnitude | 19.11 (0.01) | 19.11 (0.01) | 19.13 (0.02) | ||||||||
r magnitude | 19.58 (0.02) | 19.58 (0.01) | 19.55 (0.02) | ||||||||
i magnitude | 19.85 (0.03) | 19.85 (0.03) | 19.88 (0.03) | ||||||||
z magnitude | 20.17 (0.1) | 20.17 (0.1) | 20.20 (0.1) | ||||||||
G magnitude | 19.32 (0.02) | 19.37 | 19.32 (0.004) | ||||||||
BP magnitude | 19.24 (0.02) | 19.21 | |||||||||
RP magnitude | 19.66 (0.05) | 19.49 | |||||||||
Pan g magnitude | 19.15 (0.01) | ||||||||||
Pan r magnitude | 19.51 (0.006) | ||||||||||
Pan i magnitude | 19.89 (0.01) | ||||||||||
Pan z magnitude | 20.08 (0.05) | ||||||||||
Pan y magnitude | 19.97 (0.2) | ||||||||||
E(B-V) | 0.029 |
* 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.