J11560+3407

PG1153+344  ·  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]39687 ± 328
log g5.625 ± 0.034
log n(He)/n(H)-2.653 ± 0.073
reduced χ²0.976 over 640 points
radial velocity-101.0 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 18:30:32

Fit — Lei (TLUSTY)

Teff [K]38180 ± 310
log g5.420 ± 0.050
log n(He)/n(H)-2.540 ± 0.090
gridsLei et al. 2019, ApJ 881, 135
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

source filespec-57389-HD114754N322927B01_sp12-110.fits.gz

Gaia astrometry

Gaia DR3 source4028265945931548544
parallax [mas]0.5620 ± 0.0523
G14.810
Gabs3.607
μα [mas/yr]-5.941
μδ [mas/yr]-17.331
l, b179.124, 76.194

Published (Culpan et al. 2022)

class (Culpan)sdOB
class (SIMBAD)sdB
Teff [K]40483 ± 275
log g5.54 ± 0.03
log y-2.70 ± 0.05
reference2021ApJS..256...28L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-1.64-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-1.46-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-1.38-40.0, 31.64.2-43.0, 43.0
Hε3970.07-1.34-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-1.31-20.0, 26.24.0-31.8, 32.0
Hη3835.38-1.29-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-1.28-16.0, 16.03.9-15.6, 16.7
Hι3770.63-1.27-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-1.58-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-1.51-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-1.36-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-1.66-15.0, 15.05.1-15.0, 15.0