J23293+3213sdB

LAMOSTJ232922.64+321359.3 · 23:29:22.63 32:13:59.38 · 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]	29436 ± 393
log g	5.470 ± 0.056
log n(He)/n(H)	-2.643 ± 0.071
reduced χ²	1.001 over 641 points
radial velocity	39.0 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 18:34:18

Fit — Lei (TLUSTY)

T_eff [K]	31070 ± 280
log g	5.490 ± 0.070
log n(He)/n(H)	-2.590 ± 0.260
grids	Lei et al. 2020, ApJ 889, 117 SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

cosmic rays	4 pixels cancelled
S/N (classifier)	42.8
source file	spec-58046-GACII353N31M1_sp03-117.fits.gz

Gaia astrometry

Gaia DR3 source	2872454748672529280
parallax [mas]	0.3905 ± 0.0678
G	16.907
G_abs	4.892
μ_α [mas/yr]	-0.741
μ_δ [mas/yr]	0.524
l, b	103.406, -27.508

Published (Culpan et al. 2022)

class (Culpan)	sdB
T_eff [K]	30127 ± 257
log g	5.28 ± 0.05
log y	-2.94 ± 0.10
reference	2021ApJS..256...28L

Classifier

AGREES

fitted Teff 30127 logg 5.28 logY -2.94 2021ApJS..256...28L

auto: contrast 0.15, within the 0.30 a subdwarf reaches at 28 kK

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	0.63	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	0.56	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	0.53	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	0.52	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	0.51	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	0.50	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	0.49	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	0.49	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	0.61	-11.9, 11.9	4.9	-15.0, 13.8
He I 4472	4471.60	0.58	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	0.52	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	0.64	-15.0, 15.0	5.1	-15.0, 15.0