All names: SDSS J081822.34+353618.9, EQ J0818+3536, Gaia DR2 904433388558598016, GALEX J081822.4+353620, SDSS J081822.33+353618.8, Gaia EDR3 904433388558598016, J0818+3536, GALEX J081822.1+353619, USNO-B1.0 1256-00162162, Gaia DR3 904433388558598016, WD 0815+357
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | Stilism | Gianninas et al. 2014 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|
| Right ascension | 08 18 22.35 (2) | 08 18 22.34 (2) | 08 18 22.42 | ||||
| Declination | 35 36 18.70 (1) | 35 36 18.92 (1) | 35 36 12.96 | ||||
| Spectral type | DA | DA | DA4.7 | ||||
| Effective temperature | [K] | 10360.0 (190) | |||||
| log(g) | [cgs] | 5.86 (0.09) | |||||
| Mass | [M☉] | 0.165 | |||||
| log(Luminosity) | [L☉] | ||||||
| Cooling age | [Gyr] | 1.6130 (0.2) | |||||
| 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] | -0.26 (2) | |||||
| Distance | [pc] | 3512.00 (659) | |||||
| Composition | H | ||||||
| Proper motion (right ascension) | [mas/yr] | 5.536456584 (2) | 5.536 (2) | ||||
| Proper motion (declination) | [mas/yr] | -13.69290914 (1) | -13.693 (1) | ||||
| Variability | |||||||
| Magnetic | |||||||
| Bd | [MG] | ||||||
| Infrared excess (disk) | |||||||
| Binarity | WDMS | yes | |||||
| B magnitude | 20.80 | ||||||
| V magnitude | |||||||
| R magnitude | 19.90 | ||||||
| I magnitude | |||||||
| J magnitude | |||||||
| H magnitude | |||||||
| K magnitude | |||||||
| u magnitude | 21.67 (0.2) | 21.24 | |||||
| g magnitude | 20.68 (0.03) | 20.48 | |||||
| r magnitude | 20.86 (0.05) | ||||||
| i magnitude | 21.12 (0.08) | ||||||
| z magnitude | 21.11 (0.3) | ||||||
| G magnitude | 20.84 (0.3) | 20.84 (0.02) | |||||
| BP magnitude | 21.11 (0.3) | ||||||
| RP magnitude | 20.76 (0.2) | ||||||
| Pan g magnitude | 20.77 (0.02) | ||||||
| Pan r magnitude | 20.88 (0.02) | ||||||
| Pan i magnitude | 21.05 (0.03) | ||||||
| Pan z magnitude | 20.97 (0.05) | ||||||
| Pan y magnitude | |||||||
| E(B-V) | 0.033 | ||||||
* 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.