J13465+2817sdB
PG1344+285 · 13:46:32.66 28:17:22.81 · Culpan knownhsd
χ²/N = 0.97
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] | 26580 ± 146 |
| log g | 5.354 ± 0.024 |
| log n(He)/n(H) | -2.945 ± 0.090 |
| reduced χ² | 0.970 over 658 points |
| radial velocity | -142.0 km s−1 |
| resolution (FWHM) | 2.50 Å |
| lines fitted | 13 |
| grids | HE-0.041.fits HE-0.125.fits HE-0.300.fits HE-0.550.fits +9 more |
| fitted | 04/09/2026 18:31:05 |
Fit — Lei (TLUSTY)
| Teff [K] | 28040 ± 360 |
| log g | 5.330 ± 0.020 |
| log n(He)/n(H) | -2.930 ± 0.070 |
| 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) | 30.1 |
| source file | spec-57477-HD135310N283853B01_sp03-239.fits.gz |
Gaia astrometry
| Gaia DR3 source | 1451833434359977216 |
| parallax [mas] | 0.6657 ± 0.0383 |
| G | 14.849 |
| Gabs | 4.012 |
| μα [mas/yr] | -11.969 |
| μδ [mas/yr] | -6.922 |
| l, b | 41.560, 77.755 |
Published (Culpan et al. 2022)
| class (Culpan) | sdB+WD |
| class (SIMBAD) | sdB |
| Teff [K] | 28800 ± 600 |
| log g | 5.46 ± 0.07 |
| log y | -2.60 ± 0.20 |
| reference | 2015A&A...577A..26G |
Classifier
AGREES
fitted Teff 28800 logg 5.46 logY -2.6 2015A&A...577A..26G
auto: contrast 0.15, within the 0.32 a subdwarf reaches at 26 kK, Mg I b suggests a companion but Ca II does not (0.9 sigma)
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | -2.30 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | -2.06 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | -1.94 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | -1.88 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | -1.84 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | -1.82 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | -1.80 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | -1.79 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| Hκ | 3750.15 | -1.78 | -10.0, 10.0 | 3.9 | -7.4, 8.7 |
| He II 4686 | 4685.70 | -2.22 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He I 4472 | 4471.60 | -2.12 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | -1.91 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | -2.33 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |