J07460+3344

SDSSJ074603.33+334436.8  ·  Culpan knownhsd

χ²/N = 1.02

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]25413 ± 146
log g5.260 ± 0.023
log n(He)/n(H)-2.423 ± 0.041
reduced χ²1.017 over 658 points
radial velocity-108.0 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 18:28:47

Fit — Lei (TLUSTY)

Teff [K]26480 ± 240
log g5.220 ± 0.030
log n(He)/n(H)-2.430 ± 0.070
gridsLei et al. 2019, ApJ 881, 135
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

source filespec-56993-GAC115N34B1_sp08-236.fits.gz

Gaia astrometry

Gaia DR3 source882125367078828672
parallax [mas]0.5826 ± 0.0363
G14.978
Gabs3.891
μα [mas/yr]-2.361
μδ [mas/yr]-3.152
l, b186.319, 25.340

Published (Culpan et al. 2022)

class (Culpan)sdB
class (SIMBAD)sd
Teff [K]27295 ± 265
log g5.30 ± 0.03
log y-2.51 ± 0.04
reference2021ApJS..256...28L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-1.75-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-1.56-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-1.48-40.0, 31.64.2-43.0, 43.0
Hε3970.07-1.43-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-1.40-20.0, 26.24.0-31.8, 32.0
Hη3835.38-1.38-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-1.37-16.0, 16.03.9-15.6, 16.7
Hι3770.63-1.36-13.0, 13.03.9-11.7, 11.6
Hκ3750.15-1.35-10.0, 10.03.9-7.4, 8.7
He II 46864685.70-1.69-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-1.61-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-1.45-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-1.77-15.0, 15.05.1-15.0, 15.0