J17132+4041

SDSSJ171314.08+404108.9 · 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

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

Results and provenance

Fit — Bamberg

T_eff [K]	52380 ± 1805
log g	5.731 ± 0.158
log n(He)/n(H)	-0.529 ± 0.121
reduced χ²	0.985 over 748 points
radial velocity	102.0 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 19:09:54

Observation

source file

spec-4984-55827-0792.fits

Gaia astrometry

Gaia DR3 source	1341909823796956672
parallax [mas]	0.1242 ± 0.1004
G	18.186
μ_α [mas/yr]	-3.880
μ_δ [mas/yr]	-1.419
l, b	65.261, 35.287

Published (Culpan et al. 2022)

class (Culpan)	sdO
class (SIMBAD)	sdOHe
T_eff [K]	41926 ± 2000
log g	5.42 ± 0.20
log y	-0.04 ± 0.40
reference	2009PhDT.......273H

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	1.65	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	1.48	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	1.40	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	1.35	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	1.32	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	1.30	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	1.29	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	1.28	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	1.59	-11.9, 11.9	4.9	-15.0, 13.8
He II 5412	5411.52	1.84	-15.0, 15.0	5.6	-15.0, 15.0
He II 4542	4541.59	1.55	-15.0, 20.0	4.7	-20.0, 20.0
He II 4200	4199.84	1.43	-23.5, 33.8	4.3	-20.0, 20.0
He I 4472	4471.60	1.52	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	1.37	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	1.67	-15.0, 15.0	5.1	-15.0, 15.0

Spectral energy distribution

T_eff 52380 K · log g 5.731 · E(44−55) 0.062 · χ²_r 0.63 over 10 bands

distance 8052 pc · parallax 0.1200 ± 0.1000 mas (83%) · R 0.1515 +0.2179 −0.0614 R☉ · M 0.451 +2.260 −0.293 M☉ · L 156.0 +768.5 −101.0 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.