J12418+1731

Feige67 · Culpan knownhsd

outside the grid 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

Observed spectrum in black, model in red, offset by line. Balmer series left, helium right.

Results and provenance

Fit — Bamberg

T_eff [K]	56212 ± 1735
log g	6.064 ± 0.097
log n(He)/n(H)	-1.590 ± 0.104
reduced χ²	0.978 over 742 points
radial velocity	-120.0 km s⁻¹
resolution (FWHM)	2.50 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 18:30:42

Observation

source file

spec-59200-HD124029N161645V01_sp09-108.fits.gz

Gaia astrometry

Gaia DR3 source	3935488605023787392
parallax [mas]	2.9149 ± 0.0735
G	11.755
G_abs	4.128
μ_α [mas/yr]	-7.170
μ_δ [mas/yr]	-37.278
l, b	289.479, 80.143

Published (Culpan et al. 2022)

class (Culpan)	sdO
class (SIMBAD)	sdOpec
T_eff [K]	61114 ± 318
log g	5.92 ± 0.01
log y	-1.59 ± 0.04
reference	2018A&A...609A..89L

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	-1.95	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	-1.74	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	-1.64	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	-1.59	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	-1.56	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	-1.54	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	-1.52	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	-1.51	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	-1.88	-11.9, 11.9	4.9	-15.0, 13.8
He II 5412	5411.52	-2.17	-15.0, 15.0	5.6	-15.0, 15.0
He II 4542	4541.59	-1.82	-15.0, 20.0	4.7	-20.0, 20.0
He II 4200	4199.84	-1.68	-23.5, 33.8	4.3	-20.0, 20.0
He I 4472	4471.60	-1.79	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	-1.61	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	-1.97	-15.0, 15.0	5.1	-15.0, 15.0