GALEX 2697737570777827779
All names: Gaia DR3 3701841761350856704, USNO-A2.0 0900-07131528, Gaia DR2 3701841761350856704, SDSS J122117.91+035440.10, GALEX 2697737570777827779, Gaia EDR3 3701841761350856704, SDSS J122117.90+035440.1, SDSS J122117.91+035440.1
| Parameter | Unit | Gaia EDR3 | Pan-STARRS DR1 | SDSS DR12 | Genest-Beaulieu & Bergeron 2019 (spectroscopic) | MWDD HE | Gaia DR2 | Stilism | Simbad | Kleinman et al. 2013 | Vincent et al. 2023 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Right ascension | 12 21 17.91 (0.3) | 12 21 17.91 | 12 21 17.91 (0.3) | 12 21 17.91 (0.3) | 12 21 17.91 | ||||||
| Declination | 03 54 39.89 (0.2) | 03 54 40.12 | 03 54 39.89 (0.2) | 03 54 40.14 (0.2) | 03 54 40.10 | ||||||
| Spectral type | DB | DB | DB | DB+MS | |||||||
| Effective temperature | [K] | 17973.0 | 16769.0 | 17974.0 (327) | |||||||
| log(g) | [cgs] | 8.29 | 7.78 | 8.24 (0.1) | |||||||
| Mass | [M☉] | 0.776 | 0.478 | 0.734 (0.07) | |||||||
| log(Luminosity) | [L☉] | ||||||||||
| Cooling age | [Gyr] | 0.0949 | |||||||||
| log(H/He) | -5.02 | ||||||||||
| log(C/He) | |||||||||||
| log(Ca/He) | |||||||||||
| log(Ca/H) | |||||||||||
| log(N/He) | |||||||||||
| log(O/He) | |||||||||||
| log(Na/He) | |||||||||||
| log(Mg/He) | |||||||||||
| log(Al/He) | |||||||||||
| log(Si/He) | |||||||||||
| log(P/He) | |||||||||||
| log(S/He) | |||||||||||
| log(Cl/He) | |||||||||||
| log(Sc/He) | |||||||||||
| log(Ti/He) | |||||||||||
| log(V/He) | |||||||||||
| log(Cr/He) | |||||||||||
| log(Mn/He) | |||||||||||
| log(Fe/He) | |||||||||||
| log(Co/He) | |||||||||||
| log(Ni/He) | |||||||||||
| log(Cu/He) | |||||||||||
| log(Zn/He) | |||||||||||
| log(Ga/He) | |||||||||||
| log(Ge/He) | |||||||||||
| log(Sr/He) | |||||||||||
| Parallax | [mas] | 1.86 (0.3) | 2.02 (0.4) | 2.02 (0.4) | |||||||
| Distance | [pc] | 536.67 (92) | 494.91 (102) | 494.90 (102) | |||||||
| Composition | He | ||||||||||
| Proper motion (right ascension) | [mas/yr] | 2.970448252 (0.4) | 2.664264204 (0.9) | 2.664 (0.9) | |||||||
| Proper motion (declination) | [mas/yr] | -15.89812334 (0.3) | -15.94112802 (0.4) | -15.941 (0.4) | |||||||
| Variability | |||||||||||
| Magnetic | |||||||||||
| Bd | [MG] | ||||||||||
| Infrared excess (disk) | |||||||||||
| Binarity | WDMS | ||||||||||
| B magnitude | 18.70 (0.3) | ||||||||||
| V magnitude | |||||||||||
| R magnitude | 18.80 (0.3) | ||||||||||
| I magnitude | |||||||||||
| J magnitude | |||||||||||
| H magnitude | |||||||||||
| K magnitude | |||||||||||
| u magnitude | 19.00 (0.02) | 19.00 (0.02) | 18.98 (0.03) | ||||||||
| g magnitude | 19.05 (0.01) | 19.05 (0.01) | 19.07 (0.02) | ||||||||
| r magnitude | 19.38 (0.02) | 19.38 (0.01) | 19.34 (0.03) | ||||||||
| i magnitude | 19.67 (0.02) | 19.67 (0.02) | 19.67 (0.03) | ||||||||
| z magnitude | 19.85 (0.1) | 19.85 (0.1) | 19.84 (0.1) | ||||||||
| G magnitude | 19.18 (0.03) | 19.23 | 19.23 (0.004) | ||||||||
| BP magnitude | 19.12 (0.03) | 19.09 | |||||||||
| RP magnitude | 19.29 (0.05) | 19.24 | |||||||||
| Pan g magnitude | 19.06 (0.007) | ||||||||||
| Pan r magnitude | 19.30 (0.01) | ||||||||||
| Pan i magnitude | 19.62 (0.009) | ||||||||||
| Pan z magnitude | 19.87 (0.02) | ||||||||||
| Pan y magnitude | 19.97 (0.08) | ||||||||||
| E(B-V) | 0.025 | ||||||||||
* 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
