J09309+0250

PG0928+031  ·  Culpan knownhsd

χ²/N = 0.97

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]29631 ± 183
log g5.729 ± 0.028
log n(He)/n(H)-2.586 ± 0.061
reduced χ²0.975 over 637 points
radial velocity-111.0 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 18:29:44

Fit — Lei (TLUSTY)

Teff [K]31340 ± 210
log g5.580 ± 0.020
log n(He)/n(H)-2.560 ± 0.070
gridsLei et al. 2018, ApJ 868, 70
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

cosmic rays12 pixels cancelled
source filespec-57392-HD092600N030149M01_sp08-094.fits.gz

Gaia astrometry

Gaia DR3 source3844661557225496064
parallax [mas]0.9107 ± 0.0407
G14.926
Gabs4.785
μα [mas/yr]-5.947
μδ [mas/yr]-1.135
l, b230.860, 36.346

Published (Culpan et al. 2022)

class (Culpan)sdB
class (SIMBAD)sdO
Teff [K]30000 ± 600
log g5.67 ± 0.18
log y-2.70 ± 0.20
reference2015A&A...577A..26G

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-1.80-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-1.61-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-1.52-40.0, 31.64.2-43.0, 43.0
Hε3970.07-1.47-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-1.44-20.0, 26.24.0-31.8, 32.0
Hη3835.38-1.42-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-1.41-16.0, 16.03.9-15.6, 16.7
Hι3770.63-1.40-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-1.73-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-1.66-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-1.49-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-1.82-15.0, 15.05.1-15.0, 15.0