All names: SBSS 1635+608, Gaia DR2 1624507268736224256, Gaia DR3 1624507268736224256, 2MASS J16363555+6042009, WISE J163635.64+604200.6, Gaia EDR3 1624507268736224256, WISEA J163635.66+604200.6, USNO-B1.0 1507-00226063, TIC 198239605, WD 1635+608, PG 1635+608
| Parameter | Unit | Gaia EDR3 | Gaia DR2 | Stilism | Gianninas et al. 2011 | Liebert et al. 2005 | Vincent et al. 2024 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 16 36 35.64 (0.03) | 16 36 35.64 (0.04) | 16 36 35.64 | 16 36 35.58 (0.03) | 16 36 31.30 | ||||
| Declination | 60 42 00.22 (0.03) | 60 42 00.24 (0.05) | 60 42 00.22 | 60 42 00.93 (0.03) | 60 43 07.68 | ||||
| Spectral type | DA | DA | DA1.9 | DA3 | |||||
| Effective temperature | [K] | 26560.0 (459) | 25750.0 (450) | 27374.0 (364) | |||||
| log(g) | [cgs] | 7.95 (0.06) | 7.91 (0.06) | 7.99 (0.01) | |||||
| Mass | [M☉] | 0.61 (0.03) | 0.59 (0.03) | 0.637 (0.01) | |||||
| log(Luminosity) | [L☉] | -1.10 | |||||||
| Cooling age | [Gyr] | 0.0219 | |||||||
| 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] | 7.33 (0.03) | 7.28 (0.05) | 7.33 | 7.33 (0.03) | ||||
| Distance | [pc] | 136.46 (0.6) | 137.34 (0.9) | 136.00 | 138.00 | 136.46 | 136.46 (0.6) | ||
| Composition | H | ||||||||
| Proper motion (right ascension) | [mas/yr] | 27.75254175 (0.04) | 27.91032473 (0.1) | 27.753 (0.04) | |||||
| Proper motion (declination) | [mas/yr] | -44.3674784 (0.04) | -44.28682606 (0.1) | -44.367 (0.04) | |||||
| Variability | |||||||||
| Magnetic | |||||||||
| Bd | [MG] | ||||||||
| Infrared excess (disk) | |||||||||
| Binarity | |||||||||
| B magnitude | 16.40 | ||||||||
| V magnitude | 15.82 | 15.82 | |||||||
| R magnitude | 16.20 | ||||||||
| I magnitude | |||||||||
| J magnitude | 16.46 (0.1) | ||||||||
| H magnitude | 16.08 (0.2) | ||||||||
| K magnitude | |||||||||
| u magnitude | |||||||||
| g magnitude | |||||||||
| r magnitude | |||||||||
| i magnitude | |||||||||
| z magnitude | |||||||||
| G magnitude | 15.84 (0.002) | 15.86 | 15.84 | 15.84 (0.003) | |||||
| BP magnitude | 15.73 (0.002) | 15.69 | |||||||
| RP magnitude | 16.08 (0.005) | 16.09 | |||||||
| Pan g magnitude | |||||||||
| Pan r magnitude | |||||||||
| Pan i magnitude | |||||||||
| Pan z magnitude | |||||||||
| Pan y magnitude | |||||||||
| E(B-V) | 0.015 | ||||||||
* 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.