All names: LAMOST J014934.47+240046.7, WDJ014934.37+240046.53, GD 17, SDSS J014934.48+240046.7, SDSS J014934.41+240046.6, Gaia EDR3 291186211300158592, Gaia DR2 291186211300158592, SDSS J014934.48+240046.76, J0149+2400, 2MASS J01493435+2400466, Gaia DR3 291186211300158592, UCAC4 571-003879, SDSS J014934.45+240046.7, TIC 26893392, GALEX J014934.4+240047
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Caron et al. 2023 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2015 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 49 34.52 (0.04) | 01 49 34.46 | 01 49 34.52 (0.06) | 01 49 34.52 | 01 49 34.37 (0.04) | 01 49 34.52 | ||||||||
| Declination | 24 00 46.86 (0.04) | 24 00 46.75 | 24 00 46.85 (0.06) | 24 00 46.86 | 24 00 46.53 (0.04) | 24 00 46.85 | ||||||||
| Spectral type | DZA | DAZ | DZ | DAZ | DZ | |||||||||
| Effective temperature | [K] | 8762.0 (28) | 9680.0 | 9547.0 | 6559.0 (12) | 8458.0 (73) | ||||||||
| log(g) | [cgs] | 8.09 (0.005) | 8.32 | 8.25 | 5.89 (0.05) | 7.97 (0.01) | ||||||||
| Mass | [M☉] | 0.631 (0.005) | 0.803 | 0.74 | 0.558 (0.01) | |||||||||
| log(Luminosity) | [L☉] | |||||||||||||
| Cooling age | [Gyr] | 1.0400 | 1.0730 | 1.0130 | ||||||||||
| log(H/He) | -3.0 | |||||||||||||
| log(C/He) | ||||||||||||||
| log(Ca/He) | -8.45 | |||||||||||||
| log(Ca/H) | ||||||||||||||
| log(N/He) | ||||||||||||||
| log(O/He) | ||||||||||||||
| log(Na/He) | ||||||||||||||
| log(Mg/He) | ||||||||||||||
| log(Al/He) | ||||||||||||||
| log(Si/He) | ||||||||||||||
| log(P/He) | ||||||||||||||
| log(S/He) | ||||||||||||||
| log(Cl/He) | ||||||||||||||
| log(Sc/He) | ||||||||||||||
| log(Ti/He) | ||||||||||||||
| log(V/He) | ||||||||||||||
| log(Cr/He) | ||||||||||||||
| log(Mn/He) | ||||||||||||||
| log(Fe/He) | ||||||||||||||
| log(Co/He) | ||||||||||||||
| log(Ni/He) | ||||||||||||||
| log(Cu/He) | ||||||||||||||
| log(Zn/He) | ||||||||||||||
| log(Ga/He) | ||||||||||||||
| log(Ge/He) | ||||||||||||||
| log(Sr/He) | ||||||||||||||
| Parallax | [mas] | 22.89 (0.05) | 23.01 (0.07) | 23.01 (0.07) | 22.89 | 22.89 (0.05) | 23.01 (0.07) | |||||||
| Distance | [pc] | 43.68 (0.1) | 43.46 (0.1) | 43.45 (0.1) | 43.68 | 43.68 (0.1) | 43.45 (0.1) | |||||||
| Composition | He | |||||||||||||
| Proper motion (right ascension) | [mas/yr] | 128.4844358 (0.06) | 128.4782745 (0.1) | 128.484 (0.06) | 128.4782745 | |||||||||
| Proper motion (declination) | [mas/yr] | 20.85143592 (0.07) | 21.00155995 (0.1) | 20.851 (0.07) | 21.00155995 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 16.12 (0.06) | |||||||||||||
| V magnitude | 16.03 (0.05) | |||||||||||||
| R magnitude | 16.02 | |||||||||||||
| I magnitude | ||||||||||||||
| J magnitude | 15.89 (0.01) | 15.97 (0.07) | ||||||||||||
| H magnitude | 15.74 (0.1) | 15.74 (0.1) | ||||||||||||
| K magnitude | ||||||||||||||
| u magnitude | 16.24 (0.006) | 16.21 (0.005) | 16.24 (0.02) | 16.24 (0.006) | 16.23 (0.005) | |||||||||
| g magnitude | 15.96 (0.003) | 15.99 (0.01) | 15.96 (0.003) | 15.96 (0.004) | ||||||||||
| r magnitude | 16.05 (0.003) | 16.07 (0.01) | 16.05 (0.003) | 16.05 (0.004) | ||||||||||
| i magnitude | 16.15 (0.004) | 16.16 (0.01) | 16.15 (0.004) | 16.15 (0.004) | ||||||||||
| z magnitude | 16.30 (0.007) | 16.32 (0.01) | 16.30 (0.007) | 16.31 (0.007) | ||||||||||
| G magnitude | 15.97 (0.004) | 15.99 | 15.97 | 15.97 (0.003) | 15.99 | |||||||||
| BP magnitude | 16.02 (0.004) | 16.01 | 16.01 | |||||||||||
| RP magnitude | 15.85 (0.006) | 15.86 | 15.86 | |||||||||||
| Pan g magnitude | 15.97 (0.004) | 15.97 (0.004) | ||||||||||||
| Pan r magnitude | 16.07 (0.003) | 16.07 (0.003) | ||||||||||||
| Pan i magnitude | 16.17 (0.002) | 16.17 (0.002) | ||||||||||||
| Pan z magnitude | 16.32 (0.003) | 16.32 (0.003) | ||||||||||||
| Pan y magnitude | 16.41 (0.003) | 16.41 (0.003) | ||||||||||||
| E(B-V) | 0.001 | |||||||||||||
* 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.