J06504+1639

LAMOSTJ065027.16+163946.0  ·  Culpan knownhsd

χ²/N = 1.00

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]28573 ± 581
log g5.583 ± 0.094
log n(He)/n(H)-3.073 ± 0.312
reduced χ²1.004 over 639 points
radial velocity-161.0 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 18:27:50

Fit — Lei (TLUSTY)

Teff [K]28870 ± 350
log g5.650 ± 0.050
log n(He)/n(H)-3.000 ± 0.000
gridsLei et al. 2019, ApJ 881, 135
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid
heliumpublished as a limit

Observation

source filespec-57012-GAC100N17M1_sp06-209.fits.gz

Gaia astrometry

Gaia DR3 source3358122782854938112
parallax [mas]0.4940 ± 0.0554
G16.284
Gabs4.801
μα [mas/yr]-0.920
μδ [mas/yr]-0.780
l, b197.911, 7.301

Published (Culpan et al. 2022)

class (Culpan)sdB
Teff [K]30784 ± 230
log g5.81 ± 0.05
log y-3.14 ± 0.19
reference2021ApJS..256...28L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-2.61-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-2.33-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-2.20-40.0, 31.64.2-43.0, 43.0
Hε3970.07-2.13-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-2.09-20.0, 26.24.0-31.8, 32.0
Hη3835.38-2.06-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-2.04-16.0, 16.03.9-15.6, 16.7
Hι3770.63-2.02-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-2.52-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-2.40-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-2.16-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-2.64-15.0, 15.05.1-15.0, 15.0