J07266+0833

LAMOSTJ072637.25+083330.8  ·  Culpan knownhsd

χ²/N = 1.01

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

profile fit on the Bamberg grid
Observed spectrum in black, model in red, offset by line. Balmer series left, helium right.

Results and provenance

Fit — Bamberg

Teff [K]29453 ± 169
log g5.583 ± 0.026
log n(He)/n(H)-3.517 ± 0.310
reduced χ²1.007 over 639 points
radial velocity-225.0 km s−1
resolution (FWHM)2.50 Å
lines fitted12
gridsHE-0.041.fits
HE-0.125.fits
HE-0.300.fits
HE-0.550.fits
+9 more
fitted04/09/2026 18:28:27

Fit — Lei (TLUSTY)

Teff [K]29920 ± 130
log g5.640 ± 0.020
log n(He)/n(H)-3.000 ± 0.000
gridsLei et al. 2018, ApJ 868, 70
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid
heliumpublished as a limit

Observation

cosmic rays4 pixels cancelled
source filespec-57474-GAC111N10B1_sp01-096.fits.gz

Gaia astrometry

Gaia DR3 source3143342600936696960
parallax [mas]0.6437 ± 0.0439
G15.014
Gabs4.140
μα [mas/yr]-0.703
μδ [mas/yr]-15.471
l, b209.214, 11.679

Published (Culpan et al. 2022)

class (Culpan)sdB
Teff [K]30401 ± 152
log g5.52 ± 0.03
log y-3.47 ± 0.11
reference2021ApJS..256...28L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-3.65-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-3.26-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-3.08-40.0, 31.64.2-43.0, 43.0
Hε3970.07-2.98-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-2.92-20.0, 26.24.0-31.8, 32.0
Hη3835.38-2.88-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-2.85-16.0, 16.03.9-15.6, 16.7
Hι3770.63-2.83-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-3.52-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-3.36-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-3.02-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-3.69-15.0, 15.05.1-15.0, 15.0