All names: PG 1439-013, [TFW97] J144227.48-013246.13, 2MASS J14422747-0132459, TIC 272292605, UCAC4 443-060034, LAMOST J144227.47-013245.9, GALEX J144227.3-013245, BPS BS 16981-0073, Gaia DR3 3649025693813906304, LAMOST J144227.39-013245.5, PG1439-013, Gaia DR2 3649025693813906304, SBC9 3335, [HMD92] 867-7, SDSS J144227.48-013245.8
| Parameter | Unit | Geier 2020 | Stilism | Simbad |
|---|---|---|---|---|
| Right ascension | 14 42 27.49 | 14 42 27.48 (0.04) | ||
| Declination | -01 32 45.67 | -01 32 45.90 (0.03) | ||
| Spectral type | sdO+WD | sdO | ||
| Effective temperature | [K] | 43080.0 (2990) | ||
| log(g) | [cgs] | 4.92 (0.2) | ||
| Mass | [M☉] | |||
| log(Luminosity) | [L☉] | |||
| Cooling age | [Gyr] | |||
| log(H/He) | ||||
| log(C/He) | ||||
| log(Ca/He) | ||||
| log(Ca/H) | ||||
| Parallax | [mas] | 0.77 (0.06) | 0.81 (0.04) | |
| Distance | [pc] | 1292.32 (104) | 1237.62 (57) | |
| Composition | ||||
| Proper motion (right ascension) | [mas/yr] | -9.069 (0.2) | -8.887 (0.05) | |
| Proper motion (declination) | [mas/yr] | -0.437 (0.1) | -0.227 (0.04) | |
| Variability | ||||
| Magnetic | ||||
| Bd | [MG] | |||
| Infrared excess (disk) | ||||
| Binarity | ||||
| B magnitude | 13.68 (0.03) | |||
| V magnitude | 13.87 (0.04) | |||
| R magnitude | 14.29 (0.06) | |||
| I magnitude | ||||
| J magnitude | 14.51 (0.04) | 14.51 (0.04) | ||
| H magnitude | 14.69 (0.04) | 14.69 (0.04) | ||
| K magnitude | 14.78 (0.1) | 14.78 (0.1) | ||
| u magnitude | 13.85 (0.005) | 13.85 (0.005) | ||
| g magnitude | 14.27 (0.01) | 13.63 (0.02) | ||
| r magnitude | 14.18 (0.003) | 14.11 (0.04) | ||
| i magnitude | 15.04 (0.007) | 14.54 (0.1) | ||
| z magnitude | 15.26 (0.007) | 15.26 (0.007) | ||
| G magnitude | 13.87 (0.0008) | 13.85 (0.003) | ||
| BP magnitude | 13.65 (0.009) | |||
| RP magnitude | 14.16 (0.003) | |||
| Pan g magnitude | 13.69 (0.001) | |||
| Pan r magnitude | 14.15 (0.006) | |||
| Pan i magnitude | 14.51 (0.002) | |||
| Pan z magnitude | 14.77 (0.005) | |||
| Pan y magnitude | 14.96 (0.005) | |||
| E(B-V) | 0.046 | |||
* 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.