J14594+1903

PG1457+193  ·  Culpan knownhsd

χ²/N = 0.97

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]38065 ± 305
log g6.025 ± 0.039
log n(He)/n(H)-1.458 ± 0.041
reduced χ²0.970 over 635 points
radial velocity-116.0 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 18:31:33

Fit — Lei (TLUSTY)

Teff [K]36420 ± 540
log g6.000 ± 0.030
log n(He)/n(H)-1.530 ± 0.040
gridsLei et al. 2020, ApJ 889, 117
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

source filespec-58198-HD145323N181407B01_sp13-168.fits.gz

Gaia astrometry

Gaia DR3 source1188933362275187200
parallax [mas]1.3039 ± 0.0360
G14.228
Gabs4.831
μα [mas/yr]-0.639
μδ [mas/yr]-15.156
l, b24.444, 59.567

Published (Culpan et al. 2022)

class (Culpan)sdOB
class (SIMBAD)sdBO
Teff [K]37350 ± 1090
log g5.92 ± 0.15
log y-1.41 ± 0.17
reference2012MNRAS.427.2180N

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-1.88-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-1.68-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-1.59-40.0, 31.64.2-43.0, 43.0
Hε3970.07-1.54-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-1.50-20.0, 26.24.0-31.8, 32.0
Hη3835.38-1.48-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-1.47-16.0, 16.03.9-15.6, 16.7
Hι3770.63-1.46-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-1.81-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-1.73-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-1.56-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-1.90-15.0, 15.05.1-15.0, 15.0