J07249+1516

LAMOSTJ072454.93+151650.8  ·  Culpan knownhsd

χ²/N = 0.96

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]32276 ± 192
log g6.019 ± 0.031
log n(He)/n(H)-1.765 ± 0.026
reduced χ²0.965 over 636 points
radial velocity-179.0 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 18:28:24

Fit — Lei (TLUSTY)

Teff [K]32490 ± 400
log g5.880 ± 0.080
log n(He)/n(H)-1.770 ± 0.080
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-59585-GAC110N17M1_sp01-230.fits.gz

Gaia astrometry

Gaia DR3 source3167124522048560128
parallax [mas]0.7010 ± 0.0470
G15.524
Gabs4.833
μα [mas/yr]11.628
μδ [mas/yr]-15.748
l, b202.801, 14.190

Published (Culpan et al. 2022)

class (Culpan)sdB
Teff [K]33023 ± 117
log g5.76 ± 0.02
log y-1.79 ± 0.02
reference2021ApJS..256...28L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-2.90-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-2.59-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-2.45-40.0, 31.64.2-43.0, 43.0
Hε3970.07-2.37-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-2.32-20.0, 26.24.0-31.8, 32.0
Hη3835.38-2.29-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-2.27-16.0, 16.03.9-15.6, 16.7
Hι3770.63-2.25-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-2.80-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-2.67-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-2.40-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-2.94-15.0, 15.05.1-15.0, 15.0