All names: WISE J194454.76-360312.2, GALEX J194454.7-360311, Gaia DR2 6740493675455190784, Gaia EDR3 6740493675455190784, LEP1944-3603, DENIS J194454.7-360311, WISEA J194454.76-360312.3, WDJ194454.7-360310.91, UCAC4 270-189183, TIC 299749573, 2MASS J19445469-3603106, Gaia DR3 6740493675455190784, WDJ194454.70-360310.92
| Parameter | Unit | Gaia EDR3 | O'Brien et al. 2024 | Subasavage et al. 2022 | Gaia DR2 | Stilism | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 19 44 54.80 (0.02) | 19 44 54.79 | 19 44 54.80 | 19 44 54.70 (0.02) | 19 44 54.79 | ||||
| Declination | -36 03 13.11 (0.02) | -36 03 13.04 | -36 03 13.11 | -36 03 10.92 (0.02) | -36 03 13.04 | ||||
| Spectral type | DA | DA | DA | DA | |||||
| Effective temperature | [K] | 13084.0 (189) | 11869.0 (485) | 12342.0 (98) | |||||
| log(g) | [cgs] | 8.11 (0.01) | 8.02 (0.04) | 8.06 (0.005) | |||||
| Mass | [M☉] | 0.672 (0.009) | 0.62 (0.03) | 0.643 (0.005) | |||||
| log(Luminosity) | [L☉] | ||||||||
| Cooling age | [Gyr] | ||||||||
| 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] | 33.77 (0.03) | 33.77 (0.03) | 33.88 (0.08) | 33.88 (0.08) | 33.77 | 33.77 (0.03) | 33.88 (0.08) | |
| Distance | [pc] | 29.61 (0.03) | 29.61 (0.03) | 29.51 (0.06) | 29.51 (0.07) | 29.61 | 29.61 (0.03) | 29.51 (0.07) | |
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 68.67438227 (0.03) | 68.4798271 (0.1) | 68.674 (0.04) | 68.4798271 | ||||
| Proper motion (declination) | [mas/yr] | -136.7872742 (0.02) | -136.8228278 (0.05) | -136.787 (0.02) | -136.8228278 | ||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 14.21 | 14.15 (0.04) | |||||||
| V magnitude | 14.04 | 14.00 (0.04) | |||||||
| R magnitude | 14.09 | 14.52 (0.2) | |||||||
| I magnitude | 14.12 | 14.05 (0.03) | |||||||
| J magnitude | 14.23 | 14.23 (0.04) | |||||||
| H magnitude | 14.23 | 14.23 (0.05) | |||||||
| K magnitude | 14.39 | 14.39 (0.1) | |||||||
| u magnitude | |||||||||
| g magnitude | 13.96 (0.03) | ||||||||
| r magnitude | 14.16 (0.03) | ||||||||
| i magnitude | 14.68 (0.2) | ||||||||
| z magnitude | |||||||||
| G magnitude | 14.07 (0.001) | 14.08 | 14.07 | 14.07 (0.003) | 14.08 | ||||
| BP magnitude | 14.06 (0.001) | 14.05 | 14.05 | ||||||
| RP magnitude | 14.12 (0.001) | 14.12 | 14.12 | ||||||
| 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.