J12390+4737

PG1236+479  ·  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

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]27962 ± 205
log g5.732 ± 0.035
log n(He)/n(H)-2.588 ± 0.078
reduced χ²0.992 over 641 points
radial velocity39.0 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 18:30:40

Fit — Lei (TLUSTY)

Teff [K]29650 ± 100
log g5.750 ± 0.200
log n(He)/n(H)-2.330 ± 0.120
gridsLei et al. 2019, ApJ 881, 135
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

cosmic rays3 pixels cancelled
source filespec-59672-HD124214N455237B04_sp16-121.fits.gz

Gaia astrometry

Gaia DR3 source1543006141129419648
parallax [mas]0.5751 ± 0.0418
G15.546
Gabs4.371
μα [mas/yr]-12.670
μδ [mas/yr]-2.301
l, b128.843, 69.355

Published (Culpan et al. 2022)

class (Culpan)sdB
class (SIMBAD)sdB
Teff [K]28400 ± 800
log g5.55 ± 0.10
log y-2.50 ± 0.20
reference2003A&A...400..939E

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.320.63-40.0, 40.05.0-45.0, 45.0
Hγ4340.460.56-40.0, 36.84.5-43.0, 43.0
Hδ4101.730.53-40.0, 31.64.2-43.0, 43.0
Hε3970.070.52-28.0, 30.04.1-30.0, 35.0
Hζ3889.050.51-20.0, 26.24.0-31.8, 32.0
Hη3835.380.50-20.0, 14.64.0-20.7, 21.8
Hθ3797.900.49-16.0, 16.03.9-15.6, 16.7
Hι3770.630.49-13.0, 13.03.9-11.7, 11.6
He II 46864685.700.61-11.9, 11.94.9-15.0, 13.8
He I 44724471.600.58-15.0, 15.04.6-15.0, 15.0
He I 40264026.290.52-24.2, 15.04.2-15.0, 15.0
He I 49224921.930.64-15.0, 15.05.1-15.0, 15.0