All names: LAMOST J223913.45+133810.6, SDSS J223913.45+133810.6, GALEX J223913.3+133809, TIC 210094586, 2MASS J22391345+1338106, PG2236+134, UCAC2 36747617, Gaia DR2 2731836527264665856, USNO-B1.0 1036-00617032, LAMOST J223913.46+133810.6, Gaia DR3 2731836527264665856, PG 2236+134, UCAC4 519-141679
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 22 39 13.47 | 22 39 13.46 (0.04) | ||
| Declination | 13 38 10.79 | 13 38 10.56 (0.04) | ||
| Spectral type | sdB | sdB | ||
| Effective temperature | [K] | 31566.0 (995) | ||
| log(g) | [cgs] | 5.48 (0.1) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.52 (0.07) | 0.66 (0.05) | |
| Distance | [pc] | 1909.85 (244) | 1513.78 (110) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -0.684 (0.1) | -0.644 (0.05) | |
| Proper motion (declination) | [mas/yr] | -1.797 (0.08) | -1.807 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 15.00 | |||
| V magnitude | ||||
| R magnitude | 15.14 (0.05) | |||
| I magnitude | ||||
| J magnitude | 15.51 (0.06) | 15.51 (0.06) | ||
| H magnitude | 15.61 (0.1) | 15.61 (0.1) | ||
| K magnitude | 15.53 (0.2) | 15.53 (0.2) | ||
| u magnitude | 14.49 (0.004) | 14.49 (0.004) | ||
| g magnitude | 14.67 (0.004) | 14.67 (0.004) | ||
| r magnitude | 15.13 (0.005) | 15.13 (0.005) | ||
| i magnitude | 15.48 (0.005) | 15.48 (0.005) | ||
| z magnitude | 15.76 (0.007) | 15.76 (0.007) | ||
| G magnitude | 14.93 (0.0009) | 14.91 (0.003) | ||
| BP magnitude | 14.75 (0.007) | |||
| RP magnitude | 15.16 (0.003) | |||
| Pan g magnitude | 14.75 (0.006) | |||
| Pan r magnitude | 15.14 (0.002) | |||
| Pan i magnitude | 15.49 (0.002) | |||
| Pan z magnitude | 15.76 (0.003) | |||
| Pan y magnitude | 15.93 (0.004) | |||
| E(B-V) | 0.060 | |||
* 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.