All names: GALEX J074003.0+394630, HS0736+3953, HS 0736+3953, Gaia DR2 923342347152856576, FBS 0736+398, SDSS J074002.98+394633.0, 2MASS J07400295+3946333, Gaia DR3 923342347152856576, LAMOST J074002.98+394632.9, FBS B 47, TIC 67560362
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 07 40 02.99 | 07 40 02.99 (0.04) | ||
| Declination | 39 46 33.00 | 39 46 33.01 (0.04) | ||
| Spectral type | He-sdO | sdOHe | ||
| Effective temperature | [K] | 70179.0 (775) | ||
| log(g) | [cgs] | 5.24 (0.04) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.19 (0.07) | 0.09 (0.05) | |
| Distance | [pc] | 5219.21 (1896) | 10729.61 (6113) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | 1.138 (0.1) | 1.34 (0.06) | |
| Proper motion (declination) | [mas/yr] | -1.585 (0.08) | -1.514 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | ||||
| V magnitude | ||||
| R magnitude | ||||
| I magnitude | ||||
| J magnitude | 16.32 (0.1) | 16.32 (0.1) | ||
| H magnitude | 16.19 (0.2) | 16.19 (0.2) | ||
| K magnitude | 16.51 | |||
| u magnitude | 14.84 (0.004) | 14.84 (0.01) | ||
| g magnitude | 15.25 (0.003) | 15.26 (0.01) | ||
| r magnitude | 15.77 (0.004) | 15.77 (0.01) | ||
| i magnitude | 16.12 (0.005) | 16.10 (0.01) | ||
| z magnitude | 16.44 (0.009) | 16.44 (0.02) | ||
| G magnitude | 15.54 (0.0009) | 15.52 (0.003) | ||
| BP magnitude | 15.28 (0.009) | |||
| RP magnitude | 15.82 (0.004) | |||
| Pan g magnitude | 15.36 (0.005) | |||
| Pan r magnitude | 15.79 (0.002) | |||
| Pan i magnitude | 16.16 (0.002) | |||
| Pan z magnitude | 16.44 (0.004) | |||
| Pan y magnitude | 16.64 (0.006) | |||
| E(B-V) | 0.040 | |||
* 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.