J08363+2057sdB
PG0833+211 · 08:36:19.70 20:57:47.48 · 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] | 30361 ± 726 |
| log g | 5.847 ± 0.114 |
| log n(He)/n(H) | -2.729 ± 0.316 |
| reduced χ² | 0.995 over 639 points |
| radial velocity | -163.0 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 18:29:18 |
Fit — Lei (TLUSTY)
| Teff [K] | 31370 ± 440 |
| log g | 5.520 ± 0.110 |
| log n(He)/n(H) | -2.440 ± 0.150 |
| grids | Lei et al. 2020, ApJ 889, 117 SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid |
Observation
| cosmic rays | 9 pixels cancelled |
| S/N (classifier) | 53.2 |
| source file | spec-58462-KII083141N185915B02_sp12-249.fits.gz |
Gaia astrometry
| Gaia DR3 source | 664631178147534720 |
| parallax [mas] | 0.5421 ± 0.0878 |
| G | 16.309 |
| Gabs | 5.002 |
| μα [mas/yr] | -0.810 |
| μδ [mas/yr] | -7.389 |
| l, b | 204.093, 32.030 |
Published (Culpan et al. 2022)
| class (Culpan) | sdB |
| class (SIMBAD) | sdB |
| Teff [K] | 33427 ± 225 |
| log g | 6.13 ± 0.05 |
| log y | -2.50 ± 0.08 |
| reference | 2021ApJS..256...28L |
Classifier
AGREES
fitted Teff 33427 logg 6.13 logY -2.5 2021ApJS..256...28L
auto: contrast 0.05, within the 0.29 a subdwarf reaches at 29 kK
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | -2.64 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | -2.36 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | -2.23 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | -2.16 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | -2.11 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | -2.09 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | -2.06 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | -2.05 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | -2.55 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He I 4472 | 4471.60 | -2.43 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | -2.19 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | -2.68 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |