All names: SDSS J004459.06+151821.7, SDSS J004459.06+151821.6, Gaia EDR3 2781085401124115328, Gaia DR3 2781085401124115328, GALEX J004459.1+151822, Gaia DR2 2781085401124115328, J0044+1518, WDJ004459.06+151821.69, SDSS J004459.05+151821.6
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 00 44 59.14 (0.2) | 00 44 59.13 | 00 44 59.14 | 00 44 59.06 (0.2) | |||||
| Declination | 15 18 22.29 (0.1) | 15 18 22.27 | 15 18 22.29 | 15 18 21.70 (0.1) | |||||
| Spectral type | DZ | DZ | DZ | DZ | |||||
| Effective temperature | [K] | 6133.0 (40) | 6333.0 (135) | ||||||
| log(g) | [cgs] | 8.07 (0.07) | 8.27 (0.05) | ||||||
| Mass | [M☉] | 0.619 (0.06) | 0.747 (0.04) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | 2.7500 | |||||||
| log(H/He) | -2.0 | ||||||||
| log(C/He) | |||||||||
| log(Ca/He) | -10.46 | ||||||||
| 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] | 9.93 (0.3) | 9.58 (0.6) | 9.58 (0.6) | 9.93 | 9.93 (0.3) | |||
| Distance | [pc] | 100.74 (3) | 104.38 (6) | 104.37 (6) | 100.74 | 100.74 (3) | |||
| Composition | He | ||||||||
| Proper motion (right ascension) | [mas/yr] | 68.86169288 (0.4) | 69.22904904 (0.7) | 68.862 (0.4) | |||||
| Proper motion (declination) | [mas/yr] | 36.91250437 (0.2) | 37.08548501 (0.4) | 36.913 (0.2) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | |||||||||
| V magnitude | |||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | |||||||||
| H magnitude | |||||||||
| K magnitude | |||||||||
| u magnitude | 20.11 (0.04) | 20.19 (0.04) | |||||||
| g magnitude | 19.43 (0.01) | ||||||||
| r magnitude | 19.14 (0.01) | ||||||||
| i magnitude | 19.05 (0.01) | ||||||||
| z magnitude | 19.11 (0.06) | ||||||||
| G magnitude | 19.14 (0.02) | 19.17 | 19.14 | 19.14 (0.003) | |||||
| BP magnitude | 19.38 (0.02) | 19.37 | |||||||
| RP magnitude | 18.76 (0.03) | 18.76 | |||||||
| Pan g magnitude | 19.37 (0.01) | 19.37 (0.01) | |||||||
| Pan r magnitude | 19.13 (0.01) | 19.13 (0.01) | |||||||
| Pan i magnitude | 19.08 (0.008) | 19.08 (0.008) | |||||||
| Pan z magnitude | 19.03 (0.01) | 19.03 (0.01) | |||||||
| Pan y magnitude | 19.05 (0.002) | 19.05 (0.002) | |||||||
| E(B-V) | 0.006 | ||||||||
* 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.