J20069+1442

GALEXJ20069+1442 · 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]	37821 ± 1960
log g	6.364 ± 0.281
log n(He)/n(H)	-1.760 ± 0.287
reduced χ²	0.992 over 636 points
radial velocity	-117.0 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 18:33:12

Observation

cosmic rays	20 pixels cancelled
source file	spec-57541-HD200108N143123B01_sp09-242.fits.gz

Gaia astrometry

Gaia DR3 source	1806906627074342016
parallax [mas]	1.2680 ± 0.0381
G	14.317
G_abs	4.864
μ_α [mas/yr]	0.058
μ_δ [mas/yr]	-15.870
l, b	54.874, -9.356

Published (Culpan et al. 2022)

class (Culpan)	sdOB
class (SIMBAD)	sdOB
T_eff [K]	38079 ± 376
log g	6.01 ± 0.06
log y	-1.77 ± 0.04
reference	2021ApJS..256...28L

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	-1.90	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	-1.69	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	-1.60	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	-1.55	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	-1.52	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	-1.50	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	-1.48	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	-1.47	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	-1.83	-11.9, 11.9	4.9	-15.0, 13.8
He I 4472	4471.60	-1.75	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	-1.57	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	-1.92	-15.0, 15.0	5.1	-15.0, 15.0