J12394+3323sdO

SDSSJ123926.65+332358.2 · 12:39:26.66 33:23:58.31 · Culpan knownhsd

χ²/N = 1.00

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]	41261 ± 964
log g	5.997 ± 0.110
log n(He)/n(H)	-2.019 ± 0.178
reduced χ²	0.997 over 746 points
radial velocity	-177.0 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 19:08:48

Observation

telescope	SDSS 2.5-M
survey / programme	boss
date	2013-03-07
exposure	2703 s in 6
pipeline	v5_13_2
S/N (classifier)	24.6
source file	spec-6482-56358-0610.fits

Gaia astrometry

Gaia DR3 source	1514791023489737600
parallax [mas]	-0.1145 ± 0.1901
G	18.604
μ_α [mas/yr]	-8.209
μ_δ [mas/yr]	-4.913
l, b	144.629, 83.216

Published (Culpan et al. 2022)

class (Culpan)	sdB
class (SIMBAD)	sdB

Classifier

DISPUTED

auto: He II/He I 3.0, EW 1.16, red end too noisy for Ca II (S/N 9) -- a companion is neither seen nor excluded

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	-2.87	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	-2.56	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	-2.42	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	-2.34	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	-2.30	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	-2.26	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	-2.24	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	-2.23	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	-2.77	-11.9, 11.9	4.9	-15.0, 13.8
He II 5412	5411.52	-3.20	-15.0, 15.0	5.6	-15.0, 15.0
He II 4542	4541.59	-2.68	-15.0, 20.0	4.7	-20.0, 20.0
He II 4200	4199.84	-2.48	-23.5, 33.8	4.3	-20.0, 20.0
He I 4472	4471.60	-2.64	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	-2.38	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	-2.91	-15.0, 15.0	5.1	-15.0, 15.0