J14251+2022sdB
GALEXJ14251+2022 · 14:25:07.97 20:22:42.38 · Culpan knownhsd
χ²/N = 0.99
Spectrum
shaded: the intervals the fit used · │ a cancelled pixeldrag on either panel to zoom · dbl-click or Esc to reset · arrows to pan
The whole reduced spectrum above, the region marked on it below. Shaded bands are the intervals the fit used; a tick under the axis marks a pixel the rejection mask cancelled.
Line-profile fit — Bamberg
Results and provenance
Fit — Bamberg
| Teff [K] | 36856 ± 344 |
| log g | 5.902 ± 0.046 |
| log n(He)/n(H) | -1.529 ± 0.050 |
| reduced χ² | 0.992 over 639 points |
| radial velocity | -92.0 km s−1 |
| resolution (FWHM) | 2.50 Å |
| lines fitted | 12 |
| grids | HE-0.041.fits HE-0.125.fits HE-0.300.fits HE-0.550.fits +9 more |
| fitted | 04/09/2026 18:31:20 |
Fit — Lei (TLUSTY)
| Teff [K] | 35660 ± 450 |
| log g | 5.720 ± 0.080 |
| log n(He)/n(H) | -1.560 ± 0.090 |
| grids | Lei et al. 2018, ApJ 868, 70 SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid |
Observation
| S/N (classifier) | 24.6 |
| source file | spec-57064-HD141904N190355B02_sp12-154.fits.gz |
Gaia astrometry
| Gaia DR3 source | 1240306604269576704 |
| parallax [mas] | 0.8276 ± 0.0415 |
| G | 14.968 |
| Gabs | 4.598 |
| μα [mas/yr] | -8.018 |
| μδ [mas/yr] | -7.411 |
| l, b | 20.477, 67.565 |
Published (Culpan et al. 2022)
| class (Culpan) | sdOB |
| class (SIMBAD) | sdOB |
| Teff [K] | 36873 ± 95 |
| log g | 6.04 ± 0.03 |
| log y | -1.56 ± 0.02 |
| reference | 2021ApJS..256...28L |
Classifier
DISPUTED
fitted Teff 36873 logg 6.04 logY -1.56 2021ApJS..256...28L
auto: contrast 0.01, within the 0.22 a subdwarf reaches at 34 kK, Mg I b suggests a companion but Ca II does not (0.2 sigma)
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | -1.49 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | -1.33 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | -1.26 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | -1.22 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | -1.19 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | -1.18 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | -1.17 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | -1.16 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | -1.44 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He I 4472 | 4471.60 | -1.37 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | -1.24 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | -1.51 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |