All names: WD 0420-731, 2MASS J04193771-7303441, WDJ041937.77-730344.51, MCT 0420-7310, EC 04203-7310, GALEX J041937.6-730344, TIC 33840009, Gaia DR3 4653404070862114176, Gaia DR2 4653404070862114176, WISEA J041937.83-730344.3, WISE J041937.81-730344.3, Gaia EDR3 4653404070862114176, [DI91] 1592
| Parameter | Unit | Gaia EDR3 | Bergeron et al. 2021 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 04 19 37.85 (0.03) | 04 19 37.84 (0.05) | 04 19 37.85 | 04 19 37.77 (0.03) | 04 19 37.84 | 04 19 37.13 | |||
| Declination | -73 03 44.29 (0.04) | -73 03 44.29 (0.06) | -73 03 44.29 | -73 03 44.51 (0.04) | -73 03 44.29 | -73 03 38.16 | |||
| Spectral type | DA | DA | DA | DA | |||||
| Effective temperature | [K] | 18760.0 (428) | 17963.0 (241) | ||||||
| log(g) | [cgs] | 8.14 (0.07) | 7.95 (0.01) | ||||||
| Mass | [M☉] | 0.703 (0.04) | 0.589 (0.009) | ||||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | 0.1225 | |||||||
| 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] | 11.80 (0.04) | 11.75 (0.06) | 11.80 | 11.80 (0.04) | 11.75 (0.06) | |||
| Distance | [pc] | 84.75 (0.3) | 84.00 | 85.08 (0.4) | 84.75 | 84.75 (0.3) | 85.08 (0.4) | ||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 21.77744322 (0.04) | 21.77034955 (0.1) | 21.777 (0.04) | 21.77034955 | ||||
| Proper motion (declination) | [mas/yr] | 14.00241467 (0.05) | 14.13241851 (0.1) | 14.002 (0.04) | 14.13241851 | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 15.52 | ||||||||
| V magnitude | 15.61 | ||||||||
| R magnitude | |||||||||
| I magnitude | |||||||||
| J magnitude | 16.22 (0.1) | ||||||||
| H magnitude | 15.95 (0.2) | ||||||||
| K magnitude | |||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 15.54 (0.002) | 15.56 | 15.54 | 15.54 (0.003) | 15.56 | ||||
| BP magnitude | 15.48 (0.002) | 15.46 | 15.46 | ||||||
| RP magnitude | 15.71 (0.003) | 15.70 | 15.70 | ||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.002 | ||||||||
* 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.