All names: EGGR 330, LSPM J1813+3248E, WD 1811+327.2, Gaia DR2 4592910105037219072, GALEX J181335.3+324843, USNO-B1.0 1228-00384707, PSO J273.3970+32.8116, NLTT 46139, USNO 550, Gaia EDR3 4592910105037219072, WDS J18136+3249B, TIC 180849928, G 206-18, WDJ181335.45+324843.78, J1813+3248, Gaia DR3 4592910105037219072, ** GIC 150B, G206-18, 2MASS J18133545+3248437
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Caron et al. 2023 | Blouin et al. 2019 | MWDD H | Gaia DR2 | Stilism | Gianninas et al. 2011 | Bergeron et al. 2001 | Vincent et al. 2024 | Simbad | Gentile Fusillo et al. 2018 | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 18 13 35.21 (0.04) | 18 13 35.22 (0.05) | 18 13 35.21 | 18 13 35.45 (0.04) | 18 13 35.22 | 18 13 31.80 | ||||||||
| Declination | 32 48 40.99 (0.05) | 32 48 41.08 (0.07) | 32 48 40.99 | 32 48 43.78 (0.05) | 32 48 41.08 | 32 48 19.08 | ||||||||
| Spectral type | DA | DA | DA | DA | DA | DA | DA8 | DA8 | ||||||
| Effective temperature | [K] | 6510.0 (28) | 6415.0 (45) | 6493.0 | 6420.0 (219) | 6480.0 (160) | 6529.0 (39) | |||||||
| log(g) | [cgs] | 7.99 (0.007) | 7.97 (0.02) | 7.99 | 7.64 (0.6) | 7.75 (0.4) | 8.01 (0.01) | |||||||
| Mass | [M☉] | 0.586 (0.007) | 0.57 (0.01) | 0.581 | 0.42 (0.2) | 0.45 (0.2) | 0.595 (0.01) | |||||||
| log(Luminosity) | [L☉] | -3.45 (0.2) | ||||||||||||
| Cooling age | [Gyr] | 1.8700 | 1.7860 (0.06) | 1.7850 | 1.3200 (0.6) | |||||||||
| 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] | 22.61 (0.05) | 22.50 (0.07) | 22.50 (0.07) | 22.50 (0.07) | 19.50 (4) | 22.61 | 22.61 (0.05) | 22.50 (0.07) | 19.90 (76) | ||||
| Distance | [pc] | 44.22 (0.1) | 44.44 (0.1) | 44.44 (0.1) | 44.44 (0.1) | 58.00 | 51.28 (11) | 44.22 | 44.22 (0.1) | 44.44 (0.1) | 50.25 (192) | |||
| Composition | H | H | H | H | H | |||||||||
| Proper motion (right ascension) | [mas/yr] | -186.9031439 (0.05) | -186.6557424 (0.1) | -186.903 (0.05) | -186.6557424 | |||||||||
| Proper motion (declination) | [mas/yr] | -174.0266068 (0.06) | -174.2626554 (0.2) | -174.027 (0.06) | -174.2626554 | |||||||||
| Variability | ||||||||||||||
| Magnetic | ||||||||||||||
| Bd | [MG] | |||||||||||||
| Infrared excess (disk) | ||||||||||||||
| Binarity | ||||||||||||||
| B magnitude | 17.51 | 17.60 | ||||||||||||
| V magnitude | 17.07 | |||||||||||||
| R magnitude | 16.79 | 16.70 | ||||||||||||
| I magnitude | 16.48 | |||||||||||||
| J magnitude | 16.13 (0.01) | 16.21 (0.09) | 16.08 | 16.21 (0.09) | ||||||||||
| H magnitude | 15.95 (0.2) | 15.95 (0.2) | 15.94 | 15.95 (0.2) | ||||||||||
| K magnitude | 15.81 (0.2) | 15.81 (0.2) | 15.82 | 15.81 (0.2) | ||||||||||
| u magnitude | ||||||||||||||
| g magnitude | 17.19 (0.003) | |||||||||||||
| r magnitude | 16.95 (0.002) | |||||||||||||
| i magnitude | 16.87 (0.004) | |||||||||||||
| z magnitude | 16.88 (0.003) | |||||||||||||
| G magnitude | 16.93 (0.005) | 16.94 | 16.93 | 16.93 (0.003) | 16.94 | |||||||||
| BP magnitude | 17.18 (0.005) | 17.17 | 17.17 | |||||||||||
| RP magnitude | 16.53 (0.006) | 16.53 | 16.53 | |||||||||||
| Pan g magnitude | 17.17 (0.005) | 17.17 (0.005) | 17.19 (0.003) | |||||||||||
| Pan r magnitude | 16.94 (0.01) | 16.94 (0.01) | 16.95 (0.002) | |||||||||||
| Pan i magnitude | 16.87 (0.006) | 16.87 (0.004) | 16.87 (0.004) | |||||||||||
| Pan z magnitude | 16.89 (0.002) | 16.89 (0.003) | 16.88 (0.003) | |||||||||||
| Pan y magnitude | 16.90 (0.006) | 16.90 (0.006) | 16.88 (0.009) | |||||||||||
| E(B-V) | 0.005 | |||||||||||||
* 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.