J12373+2503

PG1234+253  ·  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

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]33274 ± 631
log g6.064 ± 0.108
log n(He)/n(H)-1.549 ± 0.119
reduced χ²1.001 over 637 points
radial velocity-45.0 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 18:30:39

Fit — Lei (TLUSTY)

Teff [K]33220 ± 370
log g6.140 ± 0.080
log n(He)/n(H)-1.610 ± 0.110
gridsLei et al. 2018, ApJ 868, 70
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

source filespec-57829-HD124632N240842V02_sp14-008.fits.gz

Gaia astrometry

Gaia DR3 source3959631234670040704
parallax [mas]7.0396 ± 0.0592
G10.462
Gabs4.707
μα [mas/yr]1.504
μδ [mas/yr]-27.222
l, b245.326, 86.233

Published (Culpan et al. 2022)

class (Culpan)sdB
class (SIMBAD)sdB1(k)
Teff [K]34500 ± 1000
log g5.83 ± 0.10
log y-1.60 ± 0.10
reference2006A&A...452..579O

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-0.73-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-0.65-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-0.62-40.0, 31.64.2-43.0, 43.0
Hε3970.07-0.60-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-0.58-20.0, 26.24.0-31.8, 32.0
Hη3835.38-0.58-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-0.57-16.0, 16.03.9-15.6, 16.7
Hι3770.63-0.57-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-0.70-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-0.67-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-0.60-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-0.74-15.0, 15.05.1-15.0, 15.0