J21107+0001
SDSSJ211045.16+000142.0 · 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] | 40081 ± 410 |
| log g | 5.699 ± 0.041 |
| log n(He)/n(H) | -2.503 ± 0.085 |
| reduced χ² | 0.988 over 745 points |
| radial velocity | 11.0 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 19:10:38 |
Observation
| cosmic rays | 3 pixels cancelled |
| source file | spec-4191-55444-0700.fits |
Gaia astrometry
| Gaia DR3 source | 2689963413627537792 |
| parallax [mas] | 0.1792 ± 0.0727 |
| G | 17.013 |
| μα [mas/yr] | 1.658 |
| μδ [mas/yr] | -7.569 |
| l, b | 50.562, -30.535 |
Published (Culpan et al. 2022)
| class (Culpan) | sdOB |
| class (SIMBAD) | sdO |
| Teff [K] | 36268 ± 1037 |
| log g | 5.35 ± 0.15 |
| log y | -2.10 ± 0.20 |
| reference | 2017OAst...26..164G |
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | 0.18 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | 0.16 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | 0.15 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | 0.15 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | 0.14 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | 0.14 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | 0.14 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | 0.14 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | 0.17 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He II 5412 | 5411.52 | 0.20 | -15.0, 15.0 | 5.6 | -15.0, 15.0 |
| He II 4542 | 4541.59 | 0.17 | -15.0, 20.0 | 4.7 | -20.0, 20.0 |
| He II 4200 | 4199.84 | 0.15 | -23.5, 33.8 | 4.3 | -20.0, 20.0 |
| He I 4472 | 4471.60 | 0.16 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | 0.15 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | 0.18 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |
Spectral energy distribution
Teff 40081 K · log g 5.699 · E(44−55) 0.094 · χ²r 0.15 over 31 bands
distance 5580 pc · parallax 0.1800 ± 0.0700 mas (39%) · R 0.2445 +0.1631 −0.0698 R☉ · M 1.093 +1.970 −0.542 M☉ — above the 0.47 canonical mass · L 139.3 +246.8 −68.4 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.