J12483+0350sdO
PG1245+041 · 12:48:19.08 03:50:03.34 · Culpan knownhsd
outside the grid χ²/N = 1.00
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] | 58542 ± 596 |
| log g | 6.006 ± 0.114 |
| log n(He)/n(H) | -1.069 ± 0.118 |
| reduced χ² | 0.995 over 747 points |
| radial velocity | -65.0 km s−1 |
| resolution (FWHM) | 2.50 Å |
| lines fitted | 15 |
| grids | HE-0.041.fits HE-0.125.fits HE-0.300.fits HE-0.550.fits +9 more |
| settled | outside the grid |
| fitted | 04/09/2026 18:30:44 |
Fit — Lei (TLUSTY)
| Teff [K] | 74290 ± 18350 |
| log g | 5.850 ± 0.090 |
| log n(He)/n(H) | -1.320 ± 0.080 |
| grids | Lei et al. 2019, ApJ 881, 135 SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid |
Observation
| cosmic rays | 6 pixels cancelled |
| S/N (classifier) | 47.7 |
| source file | spec-57457-HD125136N030324M01_sp15-236.fits.gz |
Gaia astrometry
| Gaia DR3 source | 3703904449460695040 |
| parallax [mas] | 0.1945 ± 0.0819 |
| G | 16.796 |
| μα [mas/yr] | 8.663 |
| μδ [mas/yr] | -23.259 |
| l, b | 300.965, 66.694 |
Published (Culpan et al. 2022)
| class (Culpan) | sdO |
| class (SIMBAD) | sdOB |
| Teff [K] | 62000 ± 800 |
| log g | 5.92 ± 0.04 |
| log y | -0.60 ± 0.10 |
| reference | Geierprep |
Classifier
AGREES
fitted Teff 62000 logg 5.92 logY -0.6 Geierprep
auto: He II/He I 11.1, EW 1.67, red end too noisy for Ca II (S/N 15) -- a companion is neither seen nor excluded
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | -1.05 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | -0.94 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | -0.89 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | -0.86 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | -0.84 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | -0.83 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | -0.82 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | -0.82 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | -1.02 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He II 5412 | 5411.52 | -1.17 | -15.0, 15.0 | 5.6 | -15.0, 15.0 |
| He II 4542 | 4541.59 | -0.98 | -15.0, 20.0 | 4.7 | -20.0, 20.0 |
| He II 4200 | 4199.84 | -0.91 | -23.5, 33.8 | 4.3 | -20.0, 20.0 |
| He I 4472 | 4471.60 | -0.97 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | -0.87 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | -1.07 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |