J05092+3330

LAMOSTJ050913.59+333012.1  ·  Culpan knownhsd

χ²/N = 0.98

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]24893 ± 377
log g5.285 ± 0.057
log n(He)/n(H)-2.159 ± 0.072
reduced χ²0.977 over 658 points
radial velocity-171.0 km s−1
resolution (FWHM)2.50 Å
lines fitted13
gridsHE-0.041.fits
HE-0.125.fits
HE-0.300.fits
HE-0.550.fits
+9 more
fitted04/09/2026 18:26:50

Fit — Lei (TLUSTY)

Teff [K]25640 ± 200
log g5.320 ± 0.010
log n(He)/n(H)-2.130 ± 0.050
gridsLei et al. 2018, ApJ 868, 70
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

cosmic rays3 pixels cancelled
source filespec-56679-GAC078N31B1_sp16-235.fits.gz

Gaia astrometry

Gaia DR3 source181774221540061824
parallax [mas]0.7811 ± 0.0394
G15.424
Gabs5.000
μα [mas/yr]0.421
μδ [mas/yr]-14.315
l, b171.875, -3.923

Published (Culpan et al. 2022)

class (Culpan)sdB
Teff [K]24320 ± 388
log g5.09 ± 0.04
log y-2.26 ± 0.05
reference2021ApJS..256...28L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-2.77-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-2.48-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-2.34-40.0, 31.64.2-43.0, 43.0
Hε3970.07-2.26-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-2.22-20.0, 26.24.0-31.8, 32.0
Hη3835.38-2.19-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-2.17-16.0, 16.03.9-15.6, 16.7
Hι3770.63-2.15-13.0, 13.03.9-11.7, 11.6
Hκ3750.15-2.14-10.0, 10.03.9-7.4, 8.7
He II 46864685.70-2.67-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-2.55-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-2.30-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-2.81-15.0, 15.05.1-15.0, 15.0