All names: Gaia DR2 3308929464395407104, LAMOST J044829.79+150739.8, GALEX J044829.7+150740, TIC 436636292, Gaia DR3 3308929464395407104, 2MASS J04482979+1507396, KUV 04456+1502, KUV04456+1502
Parameter | Unit | Geier 2020 | Stilism | Simbad |
---|---|---|---|---|
Right ascension | 04 48 29.77 | 04 48 29.79 (0.04) | ||
Declination | 15 07 39.92 | 15 07 39.71 (0.02) | ||
Spectral type | He-sdOB | sdO | ||
Effective temperature | [K] | 43920.0 (350) | ||
log(g) | [cgs] | 5.62 (0.04) | ||
Mass | [M☉] | |||
log(Luminosity) | [L☉] | |||
Cooling age | [Gyr] | |||
log(H/He) | ||||
log(C/He) | ||||
log(Ca/He) | ||||
log(Ca/H) | ||||
Parallax | [mas] | 0.58 (0.06) | 0.75 (0.04) | |
Distance | [pc] | 1732.80 (191) | 1341.02 (74) | |
Composition | ||||
Proper motion (right ascension) | [mas/yr] | 5.625 (0.1) | 5.635 (0.05) | |
Proper motion (declination) | [mas/yr] | -3.078 (0.06) | -3.016 (0.04) | |
Variability | ||||
Magnetic | ||||
Bd | [MG] | |||
Infrared excess (disk) | ||||
Binarity | ||||
B magnitude | ||||
V magnitude | 16.10 | |||
R magnitude | ||||
I magnitude | ||||
J magnitude | 15.49 (0.06) | 15.49 (0.06) | ||
H magnitude | 15.28 (0.09) | 15.28 (0.09) | ||
K magnitude | 15.35 (0.2) | 15.35 (0.2) | ||
u magnitude | ||||
g magnitude | ||||
r magnitude | ||||
i magnitude | ||||
z magnitude | ||||
G magnitude | 15.59 (0.0006) | 15.57 (0.003) | ||
BP magnitude | 15.57 (0.007) | |||
RP magnitude | 15.48 (0.004) | |||
Pan g magnitude | 15.60 (0.009) | |||
Pan r magnitude | 15.68 (0.003) | |||
Pan i magnitude | 15.82 (0.006) | |||
Pan z magnitude | 15.94 (0.002) | |||
Pan y magnitude | 16.04 (0.007) | |||
E(B-V) | 0.250 |
* 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.