J10137+2606sdO

SDSSJ101342.12+260620.0 · 10:13:42.12 26:06:19.94 · Culpan knownhsd

χ²/N = 1.01

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]	53143 ± 1185
log g	6.002 ± 0.071
log n(He)/n(H)	-1.738 ± 0.090
reduced χ²	1.013 over 747 points
radial velocity	-67.0 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 19:08:17

Observation

telescope	SDSS 2.5-M
survey / programme	boss
date	2013-02-11
exposure	3603 s in 8
pipeline	v5_13_2
S/N (classifier)	45.7
source file	spec-6470-56334-0220.fits

Gaia astrometry

Gaia DR3 source	739156243780100352
parallax [mas]	0.5261 ± 0.0773
G	16.641
G_abs	5.212
μ_α [mas/yr]	-3.836
μ_δ [mas/yr]	-5.116
l, b	205.405, 54.876

Published (Culpan et al. 2022)

class (Culpan)	sdO
class (SIMBAD)	sdO
T_eff [K]	61120 ± 881
log g	6.05 ± 0.05
log y	-1.72 ± 0.06
reference	2021ApJS..256...28L

Classifier

AGREES

fitted Teff 61120 logg 6.05 logY -1.72 2021ApJS..256...28L

auto: He II/He I 7.4, EW 1.11, Mg I b suggests a companion but Ca II does not (0.2 sigma)

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	-1.09	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	-0.97	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	-0.92	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	-0.89	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	-0.87	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	-0.86	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	-0.85	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	-0.84	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	-1.05	-11.9, 11.9	4.9	-15.0, 13.8
He II 5412	5411.52	-1.21	-15.0, 15.0	5.6	-15.0, 15.0
He II 4542	4541.59	-1.01	-15.0, 20.0	4.7	-20.0, 20.0
He II 4200	4199.84	-0.94	-23.5, 33.8	4.3	-20.0, 20.0
He I 4472	4471.60	-1.00	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	-0.90	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	-1.10	-15.0, 15.0	5.1	-15.0, 15.0

Spectral energy distribution

T_eff 53143 K · log g 6.002 · E(44−55) 0.034 · χ²_r 0.15 over 30 bands

distance 1901 pc · parallax 0.5300 ± 0.0800 mas (15%) · R 0.0763 +0.0132 −0.0098 R☉ · M 0.214 +0.088 −0.056 M☉ — below the 0.47 canonical mass · L 41.9 +15.8 −10.2 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.