All names: WD 2235+082, TIC 399518437, UCAC4 493-149594, GALEX J223735.3+082848, 2MASS J22373544+0828484, Gaia EDR3 2716039358376761088, PG 2235+082, WISE J223735.36+082848.1, WD 2235+08, [ATZ98] F120, PM J22375+0828, RX J2237.5+0827, Gaia DR2 2716039358376761088, Gaia DR3 2716039358376761088, SDSS J223735.38+082848.3, WISEA J223735.36+082847.9
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Koester et al. 2009 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 22 37 35.34 (0.04) | 22 37 35.34 (0.07) | 22 37 35.34 | 22 37 35.44 (0.04) | 22 37 35.28 | |||||
| Declination | 08 28 47.90 (0.04) | 08 28 47.92 (0.07) | 08 28 47.90 | 08 28 48.77 (0.04) | 08 28 48.36 | |||||
| Spectral type | DA | DA | DA1.4 | DA1.5 | ||||||
| Effective temperature | [K] | 36140.0 (570) | 36519.0 (49) | 23070.0 (438) | 38088.0 (1896) | |||||
| log(g) | [cgs] | 7.98 (0.06) | 7.73 (0.007) | 7.86 (0.06) | 7.96 (0.03) | |||||
| Mass | [M☉] | 0.66 (0.03) | 0.56 (0.03) | 0.644 (0.02) | ||||||
| log(Luminosity) | [L☉] | -1.27 | ||||||||
| Cooling age | [Gyr] | 0.0355 | ||||||||
| 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] | 6.34 (0.05) | 6.30 (0.07) | 6.34 | 6.34 (0.05) | |||||
| Distance | [pc] | 157.71 (1) | 158.81 (2) | 148.00 | 182.00 | 157.71 | 157.71 (1) | |||
| Composition | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -89.34498573 (0.06) | -89.12886499 (0.1) | -89.345 (0.06) | ||||||
| Proper motion (declination) | [mas/yr] | -54.83218336 (0.06) | -54.84510836 (0.1) | -54.832 (0.06) | ||||||
| Variability | ||||||||||
| Magnetic | ||||||||||
| Bd | [MG] | |||||||||
| Infrared excess (disk) | ||||||||||
| Binarity | ||||||||||
| B magnitude | 15.34 (0.02) | |||||||||
| V magnitude | 15.42 | 16.58 | 15.47 (0.04) | |||||||
| R magnitude | 15.84 (0.08) | |||||||||
| I magnitude | ||||||||||
| J magnitude | 16.16 (0.1) | |||||||||
| H magnitude | 16.01 (0.2) | |||||||||
| K magnitude | 16.32 | |||||||||
| u magnitude | ||||||||||
| g magnitude | 15.29 (0.03) | |||||||||
| r magnitude | 15.79 (0.1) | |||||||||
| i magnitude | 15.88 (0.2) | |||||||||
| z magnitude | ||||||||||
| G magnitude | 15.45 (0.004) | 15.47 | 15.45 | 15.45 (0.003) | ||||||
| BP magnitude | 15.30 (0.004) | 15.27 | ||||||||
| RP magnitude | 15.75 (0.003) | 15.73 | ||||||||
| Pan g magnitude | ||||||||||
| Pan r magnitude | ||||||||||
| Pan i magnitude | ||||||||||
| Pan z magnitude | ||||||||||
| Pan y magnitude | ||||||||||
| E(B-V) | 0.027 | |||||||||
* 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.