J12053+2247
SDSSJ120521.48+224702.2 · 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] | 49567 ± 1090 |
| log g | 5.881 ± 0.130 |
| log n(He)/n(H) | -0.726 ± 0.104 |
| reduced χ² | 0.991 over 745 points |
| radial velocity | -200.0 km s−1 |
| resolution (FWHM) | 2.00 Å |
| lines fitted | 15 |
| grids | HE-0.041.fits HE-0.125.fits HE-0.300.fits HE-0.550.fits +9 more |
| fitted | 04/09/2026 19:08:42 |
Observation
| source file | spec-5969-56069-0137.fits |
Gaia astrometry
| Gaia DR3 source | 4000291720125290496 |
| parallax [mas] | 0.1692 ± 0.1522 |
| G | 18.011 |
| μα [mas/yr] | -6.939 |
| μδ [mas/yr] | -1.054 |
| l, b | 233.005, 78.695 |
Published (Culpan et al. 2022)
| class (Culpan) | He-sdOB |
| class (SIMBAD) | sdO |
| Teff [K] | 41400 ± 400 |
| log g | 5.40 ± 0.09 |
| log y | 0.00 ± 0.10 |
| reference | Geierprep |
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | -3.24 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | -2.90 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | -2.74 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | -2.65 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | -2.59 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | -2.56 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | -2.53 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | -2.52 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | -3.13 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He II 5412 | 5411.52 | -3.61 | -15.0, 15.0 | 5.6 | -15.0, 15.0 |
| He II 4542 | 4541.59 | -3.03 | -15.0, 20.0 | 4.7 | -20.0, 20.0 |
| He II 4200 | 4199.84 | -2.80 | -23.5, 33.8 | 4.3 | -20.0, 20.0 |
| He I 4472 | 4471.60 | -2.98 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | -2.69 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | -3.28 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |
Spectral energy distribution
Teff 49567 K · log g 5.881 · E(44−55) 0.008 · χ²r 0.40 over 9 bands
distance 5910 pc · parallax 0.1700 ± 0.1500 mas (88%) · R 0.1113 +0.1706 −0.0466 R☉ · M 0.342 +1.875 −0.227 M☉ · L 67.3 +364.4 −44.6 L☉
Photometry against the model, with the residual beneath it in units of the error. The horizontal bar on each point is the passband, not an error; a hollow point was not fitted and the tooltip says why. Drag a box to zoom, double-click or Esc to come back out.