J14159-0227
SDSSJ141558.19-022714.3 · 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] | 37478 ± 620 |
| log g | 5.867 ± 0.074 |
| log n(He)/n(H) | -2.473 ± 0.130 |
| reduced χ² | 0.983 over 745 points |
| radial velocity | -130.0 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 19:09:06 |
Observation
| source file | spec-4035-55383-0112.fits |
Gaia astrometry
| Gaia DR3 source | 3646597074491788800 |
| parallax [mas] | 0.3963 ± 0.1977 |
| G | 18.458 |
| μα [mas/yr] | -5.691 |
| μδ [mas/yr] | -6.126 |
| l, b | 340.812, 54.081 |
Published (Culpan et al. 2022)
| class (Culpan) | sdB |
| class (SIMBAD) | sdB |
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | -2.11 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | -1.88 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | -1.78 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | -1.72 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | -1.69 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | -1.66 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | -1.65 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | -1.64 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | -2.03 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He II 5412 | 5411.52 | -2.35 | -15.0, 15.0 | 5.6 | -15.0, 15.0 |
| He II 4542 | 4541.59 | -1.97 | -15.0, 20.0 | 4.7 | -20.0, 20.0 |
| He II 4200 | 4199.84 | -1.82 | -23.5, 33.8 | 4.3 | -20.0, 20.0 |
| He I 4472 | 4471.60 | -1.94 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | -1.75 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | -2.13 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |
Spectral energy distribution
Teff 37478 K · log g 5.867 · E(44−55) 0.076 · χ²r 0.30 over 12 bands
distance 2523 pc · parallax 0.4000 ± 0.2000 mas (50%) · R 0.0583 +0.0517 −0.0190 R☉ · M 0.092 +0.235 −0.050 M☉ — below the 0.47 canonical mass · L 6.0 +15.5 −3.3 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.