J08362+1917sdB+cool
SDSSJ083612.02+191755.8 · 08:36:12.02 19:17:56.11 · Culpan knownhsd
χ²/N = 0.98
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] | 35403 ± 821 |
| log g | 5.721 ± 0.115 |
| log n(He)/n(H) | -1.801 ± 0.107 |
| reduced χ² | 0.981 over 637 points |
| radial velocity | -213.0 km s−1 |
| resolution (FWHM) | 2.50 Å |
| lines fitted | 12 |
| grids | HE-0.041.fits HE-0.125.fits HE-0.300.fits HE-0.550.fits +9 more |
| fitted | 04/09/2026 18:29:17 |
Fit — Lei (TLUSTY)
| Teff [K] | 35310 ± 470 |
| log g | 5.490 ± 0.070 |
| log n(He)/n(H) | -1.690 ± 0.100 |
| grids | Lei et al. 2019, ApJ 881, 135 SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid |
Observation
| cosmic rays | 3 pixels cancelled |
| S/N (classifier) | 67.9 |
| source file | spec-58075-KII084529N184902B01_sp14-232.fits.gz |
Gaia astrometry
| Gaia DR3 source | 662771594747150976 |
| parallax [mas] | 0.5334 ± 0.0652 |
| G | 15.690 |
| Gabs | 4.448 |
| μα [mas/yr] | -2.634 |
| μδ [mas/yr] | -15.326 |
| l, b | 205.918, 31.428 |
Published (Culpan et al. 2022)
| class (Culpan) | sdOB |
| class (SIMBAD) | sdO |
| Teff [K] | 35097 ± 824 |
| log g | 5.72 ± 0.11 |
| log y | -1.92 ± 0.19 |
| reference | 2019MNRAS.486.2169K |
Classifier
DISPUTED
fitted Teff 35097 logg 5.72 logY -1.92 2019MNRAS.486.2169K
auto: contrast 0.04, within the 0.24 a subdwarf reaches at 32 kK, cool companion 9.3 sigma
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | -3.45 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | -3.08 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | -2.91 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | -2.82 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | -2.76 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | -2.73 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | -2.70 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | -2.68 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | -3.33 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He I 4472 | 4471.60 | -3.18 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | -2.86 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | -3.50 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |