J12504+5053sdO
SDSSJ125029.51+505317.3 · 12:50:29.52 50:53:17.34 · 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] | 61711 ± 1174 |
| log g | 6.877 ± 0.188 |
| log n(He)/n(H) | -1.882 ± 0.304 |
| reduced χ² | 0.998 over 744 points |
| radial velocity | -48.0 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 |
| settled | outside the grid |
| fitted | 04/09/2026 19:08:52 |
Observation
| telescope | SDSS 2.5-M |
| survey / programme | boss |
| date | 2013-05-01 |
| exposure | 2703 s in 6 |
| pipeline | v5_13_2 |
| S/N (classifier) | 23.5 |
| source file | spec-6669-56413-0835.fits |
Gaia astrometry
| Gaia DR3 source | 1567936570854743040 |
| parallax [mas] | 0.3513 ± 0.1760 |
| G | 18.697 |
| μα [mas/yr] | 0.635 |
| μδ [mas/yr] | -4.127 |
| l, b | 123.302, 66.239 |
Published (Culpan et al. 2022)
| class (Culpan) | sdO |
| class (SIMBAD) | DAO |
| Teff [K] | 86658 ± 9000 |
| log g | 6.38 ± 0.20 |
| log y | -1.33 ± 0.40 |
| reference | 2009PhDT.......273H |
Classifier
AGREES
fitted Teff 86658 logg 6.38 logY -1.33 2009PhDT.......273H
auto: He II/He I 10.1, EW 1.52, red end too noisy for Ca II (S/N 7) -- a companion is neither seen nor excluded; contrast 0.04 over the 0.02 expected at 73 kK
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | -0.78 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | -0.69 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | -0.66 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | -0.64 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | -0.62 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | -0.61 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | -0.61 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | -0.60 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | -0.75 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He II 5412 | 5411.52 | -0.87 | -15.0, 15.0 | 5.6 | -15.0, 15.0 |
| He II 4542 | 4541.59 | -0.73 | -15.0, 20.0 | 4.7 | -20.0, 20.0 |
| He II 4200 | 4199.84 | -0.67 | -23.5, 33.8 | 4.3 | -20.0, 20.0 |
| He I 4472 | 4471.60 | -0.72 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | -0.64 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | -0.79 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |