All names: GSC 01954-00398, [TFW97] J091251.66+272031.42, GALEX J091251.8+272031, Gaia DR2 695059062934110592, PG 0909+276, TYC 1954-398-1, PG0909+276, UCAC2 41367052, LAMOST J091251.66+272031.4, UCAC3 235-98168, TIC 117507370, Gaia DR3 695059062934110592, Gaia EDR3 695059062934110592, 2MASS J09125166+2720314
| Parameter | Unit | Gaia EDR3 | Geier 2020 | Stilism | Guo et al. 2015 | Simbad |
|---|---|---|---|---|---|---|
| Right ascension | 09 12 51.66 (0.05) | 09 12 51.65 | 09 12 51.66 (0.05) | |||
| Declination | 27 20 31.39 (0.04) | 27 20 31.54 | 27 20 31.40 (0.04) | |||
| Spectral type | sdOB | hot_subdwarf | sdB0.5VIIHe19 | |||
| Effective temperature | [K] | 35500.0 (500) | ||||
| log(g) | [cgs] | 6.09 (0.05) | ||||
| Mass | [M☉] | |||||
| log(Luminosity) | [L☉] | |||||
| Cooling age | [Gyr] | |||||
| log(H/He) | ||||||
| log(C/He) | ||||||
| log(Ca/He) | ||||||
| log(Ca/H) | ||||||
| Parallax | [mas] | 3.58 (0.06) | 3.73 (0.1) | 3.58 (0.06) | ||
| Distance | [pc] | 279.24 (5) | 267.77 (8) | 279.24 (5) | ||
| Composition | ||||||
| Proper motion (right ascension) | [mas/yr] | 1.496 (0.06) | 1.224 (0.2) | 1.496 (0.06) | ||
| Proper motion (declination) | [mas/yr] | -0.129 (0.05) | -0.186 (0.1) | -0.129 (0.05) | ||
| Variability | ||||||
| Magnetic | ||||||
| Bd | [MG] | |||||
| Infrared excess (disk) | ||||||
| Binarity | ||||||
| B magnitude | 11.92 (0.1) | |||||
| V magnitude | 12.10 (0.2) | |||||
| R magnitude | 12.62 (0.1) | |||||
| I magnitude | ||||||
| J magnitude | 12.86 (0.02) | 12.86 (0.02) | ||||
| H magnitude | 12.96 (0.02) | 12.96 (0.02) | ||||
| K magnitude | 13.14 (0.03) | 13.14 (0.03) | ||||
| u magnitude | 11.94 (0.001) | |||||
| g magnitude | ||||||
| r magnitude | ||||||
| i magnitude | 12.88 (0.002) | |||||
| z magnitude | 14.04 (0.009) | |||||
| G magnitude | 12.18 (0.003) | 12.21 (0.0006) | 12.18 (0.003) | |||
| BP magnitude | 12.04 (0.003) | 11.98 (0.01) | ||||
| RP magnitude | 12.48 (0.004) | 12.49 (0.002) | ||||
| Pan g magnitude | 11.97 | |||||
| Pan r magnitude | 12.46 | |||||
| Pan i magnitude | 12.81 | |||||
| Pan z magnitude | 13.11 (0.001) | |||||
| Pan y magnitude | 13.27 (0.004) | |||||
| E(B-V) | 0.020 | |||||
* 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.