SDSS J122047.69+201942.1
All names: Gaia DR3 3952011924031788032, SDSSJ122047.69+201942.17, Gaia DR2 3952011924031788032, GALEX J122047.7+201943, SDSS J122047.69+201942.3, Gaia EDR3 3952011924031788032, SDSS J122047.69+201942.1, SDSS J122047.69+201942.17
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR10 | Geier 2020 | MWDD H | MWDD HE | Gaia DR2 | Stilism | Kepler et al. 2015 | Simbad | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 20 47.69 (0.4) | 12 20 47.69 | 12 20 47.69 | 12 20 47.69 (0.4) | 12 20 47.70 (0.4) | |||||||
| Declination | 20 19 42.28 (0.3) | 20 19 42.31 | 20 19 42.17 | 20 19 42.28 (0.2) | 20 19 42.34 (0.3) | |||||||
| Spectral type | He-sdB | He-sdB | He-sdB | He-sdB | sdBHe | sdOB | ||||||
| Effective temperature | [K] | 24000.0 | 29715.0 | 43040.0 (1286) | ||||||||
| log(g) | [cgs] | 7.31 | 7.46 | 5.71 (0.1) | ||||||||
| Mass | [M☉] | 0.353 | 0.385 | |||||||||
| log(Luminosity) | [L☉] | |||||||||||
| Cooling age | [Gyr] | 0.0178 | 0.0116 | |||||||||
| log(H/He) | ||||||||||||
| log(C/He) | ||||||||||||
| log(Ca/He) | ||||||||||||
| log(Ca/H) | ||||||||||||
| Parallax | [mas] | 0.81 (0.4) | 0.93 (0.4) | 0.93 (0.4) | 0.81 (0.4) | |||||||
| Distance | [pc] | 1231.91 (625) | 1079.91 (512) | 1079.87 (512) | 1231.98 (625) | |||||||
| Composition | ||||||||||||
| Proper motion (right ascension) | [mas/yr] | -3.925423037 (0.6) | -3.401 (1) | -3.400920043 (1) | -3.925 (0.6) | |||||||
| Proper motion (declination) | [mas/yr] | -3.767773278 (0.4) | -4.016 (0.5) | -4.015866316 (0.5) | -3.768 (0.4) | |||||||
| Variability | ||||||||||||
| Magnetic | ||||||||||||
| Bd | [MG] | |||||||||||
| Infrared excess (disk) | ||||||||||||
| Binarity | ||||||||||||
| B magnitude | ||||||||||||
| V magnitude | ||||||||||||
| R magnitude | ||||||||||||
| I magnitude | ||||||||||||
| J magnitude | ||||||||||||
| H magnitude | ||||||||||||
| K magnitude | ||||||||||||
| u magnitude | 18.89 (0.02) | 18.89 (0.02) | 18.87 (0.03) | 18.89 (0.02) | ||||||||
| g magnitude | 19.26 (0.01) | 19.26 (0.01) | 19.28 (0.03) | 19.26 (0.01) | ||||||||
| r magnitude | 19.76 (0.02) | 19.76 (0.02) | 19.76 (0.02) | 19.76 (0.02) | ||||||||
| i magnitude | 20.11 (0.02) | 20.11 (0.02) | 20.12 (0.03) | 20.11 (0.02) | ||||||||
| z magnitude | 20.60 (0.1) | 20.60 (0.1) | 20.58 (0.1) | 20.60 (0.1) | ||||||||
| G magnitude | 19.51 (0.04) | 19.55 (0.005) | 19.55 | 19.51 (0.005) | ||||||||
| BP magnitude | 19.49 (0.04) | 19.42 (0.04) | 19.42 | |||||||||
| RP magnitude | 19.92 (0.1) | 19.95 (0.09) | 19.95 | |||||||||
| Pan g magnitude | 19.34 (0.01) | 19.34 (0.01) | ||||||||||
| Pan r magnitude | 19.74 (0.009) | 19.74 (0.009) | ||||||||||
| Pan i magnitude | 20.13 (0.02) | 20.13 (0.02) | ||||||||||
| Pan z magnitude | 20.40 (0.03) | 20.40 (0.03) | ||||||||||
| Pan y magnitude | 20.14 (0.06) | 20.14 (0.06) | ||||||||||
| E(B-V) | 0.019 | |||||||||||
* Constant surface field
Special notes:
Spectra
Controls
Normalize at:
Normalize by mean flux
Range:
x:
to
y:
to
Spectra available:
Spectra without link are available upon request
Absorption lines
Photometric filters
BVRI
ugriz
Photometric fit
