All names: Gaia DR3 306779618349361920, LSPM J0107+2650, Gaia EDR3 306779618349361920, SDSS J010728.47+265019.8, WDJ010728.61+265021.28, SDSS J010728.47+265019.94, SDSS J010728.47+265019.9, Gaia DR2 306779618349361920, J0107+2650, USNO-B1.0 1168-00015058
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Caron et al. 2023 | Coutu et al. 2019 | MWDD H | MWDD HE | Gaia DR2 | Hollands et al. 2017 | Stilism | Kepler et al. 2016 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 01 07 28.36 (0.2) | 01 07 28.47 | 01 07 28.51 | 01 07 28.37 (0.3) | 01 07 28.36 | 01 07 28.62 (0.2) | 01 07 28.37 | |||||||||
| Declination | 26 50 18.77 (0.1) | 26 50 19.94 | 26 50 21.60 | 26 50 18.85 (0.3) | 26 50 18.77 | 26 50 21.30 (0.1) | 26 50 18.85 | |||||||||
| Spectral type | DZH | DZ | NOTWD | NOTWD | DZ | NOTWD | DZ | DZ | DZ | |||||||
| Effective temperature | [K] | 5151.0 (18) | 5258.0 (80) | 6004.0 | 5757.0 | 6190.0 (140) | 5509.0 (21) | 5511.0 (92) | ||||||||
| log(g) | [cgs] | 8.11 (0.03) | 8.18 | 8.45 | 8.32 | 8.00 (0) | 8.23 (0.04) | |||||||||
| Mass | [M☉] | 0.641 (0.03) | 0.6858 | 0.881 | 0.779 | 0.72 (0.04) | ||||||||||
| log(Luminosity) | [L☉] | |||||||||||||||
| Cooling age | [Gyr] | 6.2100 | 6.0400 | 5.0670 | 5.3140 | 2.9000 | ||||||||||
| log(H/He) | -4.0 | <-3.0038 | ||||||||||||||
| log(C/He) | ||||||||||||||||
| log(Ca/He) | -9.5 | -9.4713 (0.2) | -8.44 | -9.303 | ||||||||||||
| log(Ca/H) | ||||||||||||||||
| log(N/He) | ||||||||||||||||
| log(O/He) | ||||||||||||||||
| log(Na/He) | -8.22 | |||||||||||||||
| log(Mg/He) | -7.93 | |||||||||||||||
| 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) | -7.73 | |||||||||||||||
| log(Co/He) | ||||||||||||||||
| log(Ni/He) | ||||||||||||||||
| log(Cu/He) | ||||||||||||||||
| log(Zn/He) | ||||||||||||||||
| log(Ga/He) | ||||||||||||||||
| log(Ge/He) | ||||||||||||||||
| log(Sr/He) | ||||||||||||||||
| Parallax | [mas] | 13.90 (0.2) | 14.64 (0.3) | 14.64 | 14.64 (0.3) | 13.90 | 13.90 (0.2) | 14.64 (0.3) | ||||||||
| Distance | [pc] | 71.96 (1) | 68.31 (2) | 68.29 (2) | 68.29 (2) | 101.00 (13) | 71.96 | 71.96 (1) | 68.29 (2) | |||||||
| Composition | He | He | He | He | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -213.9279379 (0.2) | -213.1061883 (0.6) | -213.928 (0.2) | -213.1061883 | |||||||||||
| Proper motion (declination) | [mas/yr] | -158.034033 (0.2) | -157.1684296 (0.5) | -158.034 (0.2) | -157.1684296 | |||||||||||
| Variability | ||||||||||||||||
| Magnetic | yes | |||||||||||||||
| Bd | [MG] | 3.37 (0.07) | ||||||||||||||
| Infrared excess (disk) | ||||||||||||||||
| Binarity | ||||||||||||||||
| B magnitude | 19.60 | |||||||||||||||
| V magnitude | ||||||||||||||||
| R magnitude | 18.50 | |||||||||||||||
| I magnitude | ||||||||||||||||
| J magnitude | 18.05 (0.04) | |||||||||||||||
| H magnitude | ||||||||||||||||
| K magnitude | ||||||||||||||||
| u magnitude | 23.44 (0.7) | 23.44 (0.7) | 23.27 (0.6) | 23.27 (0.6) | 23.44 (0.7) | 21.85 (0.3) | ||||||||||
| g magnitude | 19.36 (0.01) | 19.36 (0.02) | 19.36 (0.02) | 19.37 (0.01) | 19.34 (0.01) | |||||||||||
| r magnitude | 18.83 (0.01) | 18.83 (0.01) | 18.83 (0.01) | 18.82 (0.01) | 18.79 (0.01) | |||||||||||
| i magnitude | 18.67 (0.01) | 18.67 (0.02) | 18.67 (0.02) | 18.67 (0.01) | 18.71 (0.01) | |||||||||||
| z magnitude | 18.79 (0.05) | 18.78 (0.05) | 18.78 (0.05) | 18.79 (0.05) | 18.64 (0.04) | |||||||||||
| G magnitude | 18.88 (0.04) | 18.93 | 18.88 | 18.88 (0.004) | 18.93 | |||||||||||
| BP magnitude | 19.22 (0.04) | 19.33 | 19.33 | |||||||||||||
| RP magnitude | 18.47 (0.03) | 18.47 | 18.47 | |||||||||||||
| Pan g magnitude | 19.22 (0.008) | 19.22 (0.006) | ||||||||||||||
| Pan r magnitude | 18.81 (0.009) | 18.81 (0.01) | ||||||||||||||
| Pan i magnitude | 18.70 (0.007) | 18.70 (0.006) | ||||||||||||||
| Pan z magnitude | 18.77 (0.01) | 18.77 (0.01) | ||||||||||||||
| Pan y magnitude | 18.75 (0.02) | 18.75 (0.02) | ||||||||||||||
| 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.