All names: GALEX J115744.8+485617, LTNF 1, Gaia DR2 786919754746647424, PTF1 J115744.84+485618.2, TIC 11940011, GSC2 N21200127065, PG 1155+492, PK 144+65 1, ZTF J115744.84+485618.1, ZTF18aaadclg, LAMOST J115744.83+485618.1, Gaia DR3 786919754746647424, SDSS J115744.83+485618.2, SBC9 696, SDSS J115744.83+485618.19, CRTS J115744.8+485619, ATO J179.4368+48.9383, SBSS 1155+492, SDSS J115744.83+485618.4, WD 1155+492, Gaia EDR3 786919754746647424, SDSS J115744.83+485618.1, LINEAR 2639856, SV* SVS 1424, PN G144.8+65.8, WEB 10430, 2MASS J11574483+4856184, UCAC4 695-052298, V* BE UMa
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | SDSS DR12 | Bedard et al. 2020 | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | White Dwarf Catalog (McCook & Sion 1999) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 11 57 44.85 (0.01) | 11 57 44.83 | 11 57 44.83 | 11 57 44.84 (0.02) | 11 57 44.83 (0.01) | 11 57 44.95 | |||||
| Declination | 48 56 18.11 (0.02) | 48 56 18.27 | 48 56 18.27 | 48 56 18.12 (0.02) | 48 56 18.31 (0.02) | 48 56 12.12 | |||||
| Spectral type | DAO+M | CV_known | DO+M1/5e | WD/K | |||||||
| Effective temperature | [K] | 86881.0 (6139) | 11567.0 (1000) | ||||||||
| log(g) | [cgs] | 7.18 (0.2) | 8.00 (0) | ||||||||
| Mass | [M☉] | 0.51 (0.04) | |||||||||
| log(Luminosity) | [L☉] | 1.68 (0.2) | |||||||||
| Cooling age | [Gyr] | 0.0001 | |||||||||
| 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] | 0.71 (0.03) | 0.60 (0.03) | 0.71 (0.03) | |||||||
| Distance | [pc] | 1412.68 (51) | 1659.42 (92) | 1412.63 (51) | |||||||
| Composition | H | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 10.70575245 (0.01) | 10.65264654 (0.03) | 10.706 (0.01) | |||||||
| Proper motion (declination) | [mas/yr] | -12.78276647 (0.02) | -12.87847138 (0.04) | -12.783 (0.02) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | yes | ||||||||||
| B magnitude | 15.44 (0.4) | ||||||||||
| V magnitude | 15.37 (0.5) | ||||||||||
| R magnitude | 14.87 (0.2) | ||||||||||
| I magnitude | |||||||||||
| J magnitude | 13.96 (0.03) | ||||||||||
| H magnitude | 13.71 (0.04) | ||||||||||
| K magnitude | 13.63 (0.04) | ||||||||||
| u magnitude | 15.48 (0.004) | 15.47 (0.004) | 15.48 (0) | 15.48 (0.004) | |||||||
| g magnitude | 15.76 (0.003) | 15.76 (0.003) | 15.76 (0) | 15.77 (0.003) | |||||||
| r magnitude | 15.88 (0.004) | 15.87 (0.004) | 15.88 (0) | 15.88 (0.004) | |||||||
| i magnitude | 15.86 (0.004) | 15.86 (0.004) | 15.86 (0) | 15.86 (0.004) | |||||||
| z magnitude | 15.84 (0.006) | 15.83 (0.006) | 15.84 (0.01) | 15.85 (0.006) | |||||||
| G magnitude | 15.10 (0.05) | 15.19 | 15.10 (0.02) | ||||||||
| BP magnitude | 15.21 (0.05) | 15.27 | |||||||||
| RP magnitude | 14.80 (0.05) | 14.85 | |||||||||
| Pan g magnitude | 15.28 (0.1) | ||||||||||
| Pan r magnitude | 15.79 (0.1) | ||||||||||
| Pan i magnitude | 15.38 (0.09) | ||||||||||
| Pan z magnitude | 15.41 (0.1) | ||||||||||
| Pan y magnitude | 14.60 (0.007) | ||||||||||
| E(B-V) | 0.017 | ||||||||||
* 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.