J10137+2606sdO

SDSSJ101342.12+260620.0 · 10:13:42.12 26:06:19.94 · 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]	58150 ± 1209
log g	5.950 ± 0.109
log n(He)/n(H)	-1.621 ± 0.128
reduced χ²	0.979 over 743 points
radial velocity	-50.0 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 18:30:07

Fit — Lei (TLUSTY)

T_eff [K]	52050 ± 2820
log g	5.370 ± 0.080
log n(He)/n(H)	-1.730 ± 0.280
grids	Lei et al. 2019, ApJ 881, 135 SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

S/N (classifier)	45.7
source file	spec-56687-HD101242N281431M_sp01-107.fits.gz

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	-0.81	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	-0.72	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	-0.68	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	-0.66	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	-0.65	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	-0.64	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	-0.63	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	-0.63	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	-0.78	-11.9, 11.9	4.9	-15.0, 13.8
He II 5412	5411.52	-0.90	-15.0, 15.0	5.6	-15.0, 15.0
He II 4542	4541.59	-0.76	-15.0, 20.0	4.7	-20.0, 20.0
He II 4200	4199.84	-0.70	-23.5, 33.8	4.3	-20.0, 20.0
He I 4472	4471.60	-0.75	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	-0.67	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	-0.82	-15.0, 15.0	5.1	-15.0, 15.0