J15308+0600

PG1528+062  ·  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]34188 ± 196
log g6.035 ± 0.027
log n(He)/n(H)-1.456 ± 0.026
reduced χ²0.995 over 639 points
radial velocity-33.0 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 18:31:40

Fit — Lei (TLUSTY)

Teff [K]33840 ± 80
log g6.000 ± 0.020
log n(He)/n(H)-1.450 ± 0.030
gridsLei et al. 2018, ApJ 868, 70
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

source filespec-57871-HD152645N051412B01_sp09-196.fits.gz

Gaia astrometry

Gaia DR3 source4429114659552190080
parallax [mas]1.2114 ± 0.0412
G14.692
Gabs5.143
μα [mas/yr]-2.470
μδ [mas/yr]-19.961
l, b11.131, 46.661

Published (Culpan et al. 2022)

class (Culpan)sdOB
class (SIMBAD)sdOB
Teff [K]34443 ± 103
log g5.99 ± 0.02
log y-1.52 ± 0.02
reference2021ApJS..256...28L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-0.54-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-0.48-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-0.45-40.0, 31.64.2-43.0, 43.0
Hε3970.07-0.44-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-0.43-20.0, 26.24.0-31.8, 32.0
Hη3835.38-0.42-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-0.42-16.0, 16.03.9-15.6, 16.7
Hι3770.63-0.42-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-0.52-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-0.49-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-0.44-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-0.54-15.0, 15.05.1-15.0, 15.0