J00366+3755

FBS0033+376  ·  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]41974 ± 478
log g6.045 ± 0.051
log n(He)/n(H)-3.519 ± 0.277
reduced χ²0.992 over 636 points
radial velocity-117.0 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 18:25:12

Fit — Lei (TLUSTY)

Teff [K]37980 ± 750
log g6.300 ± 0.080
log n(He)/n(H)-3.000 ± 0.000
gridsLei et al. 2018, ApJ 868, 70
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid
heliumpublished as a limit

Observation

source filespec-58819-GACII008N38B1_sp08-110.fits.gz

Gaia astrometry

Gaia DR3 source368263110278860544
parallax [mas]1.3996 ± 0.0409
G14.123
Gabs4.879
μα [mas/yr]-7.655
μδ [mas/yr]-12.248
l, b119.722, -24.848

Published (Culpan et al. 2022)

class (Culpan)sdB
class (SIMBAD)sdB
Teff [K]38970 ± 1330
log g5.89 ± 0.10
log y-3.20 ± 0.00
reference2012MNRAS.427.2180N

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-1.90-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-1.69-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-1.60-40.0, 31.64.2-43.0, 43.0
Hε3970.07-1.55-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-1.52-20.0, 26.24.0-31.8, 32.0
Hη3835.38-1.50-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-1.48-16.0, 16.03.9-15.6, 16.7
Hι3770.63-1.47-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-1.83-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-1.75-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-1.57-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-1.92-15.0, 15.05.1-15.0, 15.0