All names: 2MASS J19192767+3958392, TIC 122139438, Gaia DR2 2101051924795806464, Gaia DR3 2101051924795806464, LAMOST J191927.67+395839.30, LAMOST J191927.67+395839.2, EQ J1919.4+3958, KIC 4829241
| Parameter | Unit | Stilism | Guo et al. 2015 | Zhao et al. 2013 | Vincent et al. 2024 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 19 19 27.67 | 19 19 27.72 | 19 19 27.69 (0.03) | |||
| Declination | 39 58 39.30 | 39 58 40.21 | 39 58 39.47 (0.04) | |||
| Spectral type | DAZ | DA | DA3 | |||
| Effective temperature | [K] | 20221.0 (320) | 20376.0 (345) | 17516.0 (197) | ||
| log(g) | [cgs] | 7.89 (0.05) | 7.93 (0.06) | 7.66 (0.01) | ||
| Mass | [M☉] | 0.57 (0.03) | 0.59 (0.03) | 0.449 (0.007) | ||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | 0.0540 (0.008) | ||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 9.42 | 9.42 (0.04) | |||
| Distance | [pc] | 106.11 | 106.11 (0.4) | |||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 22.18 (0.04) | ||||
| Proper motion (declination) | [mas/yr] | 46.444 (0.05) | ||||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | ||||||
| V magnitude | ||||||
| R magnitude | ||||||
| I magnitude | ||||||
| J magnitude | 15.94 (0.09) | |||||
| H magnitude | 15.99 (0.2) | |||||
| K magnitude | 15.45 (0.2) | |||||
| u magnitude | ||||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | ||||||
| z magnitude | ||||||
| G magnitude | 15.68 | 15.68 (0.003) | ||||
| BP magnitude | ||||||
| RP magnitude | ||||||
| Pan g magnitude | ||||||
| Pan r magnitude | ||||||
| Pan i magnitude | ||||||
| Pan z magnitude | ||||||
| Pan y magnitude | ||||||
| E(B-V) | 0.017 | |||||
* 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.