J23199+0452

PG2317+046 · Culpan knownhsd

χ²/N = 0.99

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]	46094 ± 2656
log g	5.844 ± 0.223
log n(He)/n(H)	-2.041 ± 0.401
reduced χ²	0.994 over 639 points
radial velocity	9.0 km s⁻¹
resolution (FWHM)	2.50 Å
lines fitted	12
grids	HE-0.041.fits HE-0.125.fits HE-0.300.fits HE-0.550.fits +9 more
fitted	04/09/2026 18:34:14

Observation

cosmic rays	6 pixels cancelled
source file	spec-56201-EG231920N071253V01_sp01-022.fits.gz

Gaia astrometry

Gaia DR3 source	2660835289023309696
parallax [mas]	2.2493 ± 0.0505
G	12.786
G_abs	4.585
μ_α [mas/yr]	25.687
μ_δ [mas/yr]	-21.279
l, b	84.843, -51.100

Published (Culpan et al. 2022)

class (Culpan)	sdOB+WD
class (SIMBAD)	sdO8VIIHe1
T_eff [K]	40600 ± 500
log g	5.96 ± 0.10
log y	-2.62 ± 0.10
reference	2013A&A...557A.122G

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	0.15	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	0.13	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	0.12	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	0.12	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	0.12	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	0.12	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	0.11	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	0.11	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	0.14	-11.9, 11.9	4.9	-15.0, 13.8
He I 4472	4471.60	0.13	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	0.12	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	0.15	-15.0, 15.0	5.1	-15.0, 15.0