J22434+1339
SDSSJ224326.26+133904.09 · Culpan knownhsd
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] | 52436 ± 2392 |
| log g | 6.466 ± 0.308 |
| log n(He)/n(H) | 0.072 ± 0.201 |
| reduced χ² | 1.004 over 745 points |
| radial velocity | 251.0 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 19:10:57 |
Observation
| source file | spec-5044-56186-0896.fits |
Gaia astrometry
| Gaia DR3 source | 2731705337488054656 |
| parallax [mas] | 0.0415 ± 0.3236 |
| G | 18.999 |
| μα [mas/yr] | 1.810 |
| μδ [mas/yr] | -1.033 |
| l, b | 81.615, -38.742 |
Published (Culpan et al. 2022)
| class (Culpan) | He-sdO |
| class (SIMBAD) | sdOHe |
| Teff [K] | 45278 ± 5324 |
| log g | 5.85 ± 0.20 |
| log y | 2.00 ± 0.00 |
| reference | 2019MNRAS.486.2169K |
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | 4.07 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | 3.63 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | 3.43 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | 3.32 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | 3.26 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | 3.21 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | 3.18 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | 3.16 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | 3.92 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He II 5412 | 5411.52 | 4.53 | -15.0, 15.0 | 5.6 | -15.0, 15.0 |
| He II 4542 | 4541.59 | 3.80 | -15.0, 20.0 | 4.7 | -20.0, 20.0 |
| He II 4200 | 4199.84 | 3.52 | -23.5, 33.8 | 4.3 | -20.0, 20.0 |
| He I 4472 | 4471.60 | 3.74 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | 3.37 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | 4.12 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |
Spectral energy distribution
Teff 52436 K · log g 6.466 · E(44−55) 0.090 · χ²r 0.60 over 9 bands
distance 24096 pc · parallax 0.0400 ± 0.3200 mas (800%) · R 0.0649 +0.1480 −0.0334 R☉ · M 0.448 +4.291 −0.342 M☉ · L 28.7 +279.4 −21.9 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.