J06247+2829

LAMOSTJ062442.46+282946.5  ·  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]34855 ± 704
log g5.704 ± 0.108
log n(He)/n(H)-1.738 ± 0.110
reduced χ²0.995 over 639 points
radial velocity-142.0 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 18:27:33

Fit — Lei (TLUSTY)

Teff [K]32930 ± 710
log g5.870 ± 0.090
log n(He)/n(H)-1.800 ± 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-57093-GAC097N28M1_sp03-054.fits.gz

Gaia astrometry

Gaia DR3 source3433651805682659200
parallax [mas]0.4617 ± 0.0906
G17.195
Gabs5.524
μα [mas/yr]0.948
μδ [mas/yr]-0.532
l, b184.568, 7.269

Published (Culpan et al. 2022)

class (Culpan)sdOB
Teff [K]34395 ± 198
log g5.87 ± 0.04
log y-1.95 ± 0.06
reference2021ApJS..256...28L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-2.30-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-2.06-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-1.94-40.0, 31.64.2-43.0, 43.0
Hε3970.07-1.88-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-1.84-20.0, 26.24.0-31.8, 32.0
Hη3835.38-1.82-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-1.80-16.0, 16.03.9-15.6, 16.7
Hι3770.63-1.79-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-2.22-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-2.12-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-1.91-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-2.33-15.0, 15.05.1-15.0, 15.0