J11375+4600

PG1134+463 · Culpan knownhsd

χ²/N = 0.96

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]	50016 ± 924
log g	6.189 ± 0.126
log n(He)/n(H)	0.304 ± 0.089
reduced χ²	0.957 over 744 points
radial velocity	59.0 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 19:08:39

Observation

cosmic rays	11 pixels cancelled
source file	spec-100423-60065-27021597919315064.fits

Gaia astrometry

Gaia DR3 source	785980977968930560
parallax [mas]	0.5154 ± 0.0486
G	15.148
G_abs	3.747
μ_α [mas/yr]	-11.799
μ_δ [mas/yr]	-7.907
l, b	155.874, 66.114

Published (Culpan et al. 2022)

class (Culpan)	He-sdO
class (SIMBAD)	sdO
T_eff [K]	48889 ± 5000
log g	5.69 ± 0.20
log y	1.09 ± 0.40
reference	2009PhDT.......273H

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	0.96	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	0.85	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	0.81	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	0.78	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	0.77	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	0.75	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	0.75	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	0.74	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	0.92	-11.9, 11.9	4.9	-15.0, 13.8
He II 5412	5411.52	1.07	-15.0, 15.0	5.6	-15.0, 15.0
He II 4542	4541.59	0.89	-15.0, 20.0	4.7	-20.0, 20.0
He II 4200	4199.84	0.83	-23.5, 33.8	4.3	-20.0, 20.0
He I 4472	4471.60	0.88	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	0.79	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	0.97	-15.0, 15.0	5.1	-15.0, 15.0

Spectral energy distribution

T_eff 50016 K · log g 6.189 · E(44−55) 0.036 · χ²_r 0.46 over 39 bands

distance 1940 pc · parallax 0.5200 ± 0.0500 mas (10%) · R 0.1638 +0.0172 −0.0142 R☉ · M 1.515 +0.396 −0.296 M☉ — above the 0.47 canonical mass · L 151.5 +33.4 −25.4 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.