J09429+0635

PG0940+068 · Culpan knownhsd

χ²/N = 0.96

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]	27354 ± 567
log g	5.523 ± 0.078
log n(He)/n(H)	-3.001 ± 0.235
reduced χ²	0.956 over 659 points
radial velocity	81.0 km s⁻¹
resolution (FWHM)	2.50 Å
lines fitted	13
grids	HE-0.041.fits HE-0.125.fits HE-0.300.fits HE-0.550.fits +9 more
fitted	04/09/2026 18:29:54

Observation

source file

spec-57133-HD094610N064230V01_sp03-193.fits.gz

Gaia astrometry

Gaia DR3 source	3853346290335592320
parallax [mas]	1.2172 ± 0.0429
G	13.668
G_abs	4.146
μ_α [mas/yr]	8.557
μ_δ [mas/yr]	-5.412
l, b	228.729, 40.832

Published (Culpan et al. 2022)

class (Culpan)	sdB+WD
class (SIMBAD)	DA2:
T_eff [K]	28069 ± 254
log g	5.33 ± 0.04
log y	-2.77 ± 0.04
reference	2021ApJS..256...28L

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	1.31	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	1.17	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	1.11	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	1.07	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	1.05	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	1.04	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	1.03	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	1.02	-13.0, 13.0	3.9	-11.7, 11.6
H_κ	3750.15	1.01	-10.0, 10.0	3.9	-7.4, 8.7
He II 4686	4685.70	1.27	-11.9, 11.9	4.9	-15.0, 13.8
He I 4472	4471.60	1.21	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	1.09	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	1.33	-15.0, 15.0	5.1	-15.0, 15.0