J17130+2450

LAMOSTJ171304.66+245019.5  ·  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]26413 ± 567
log g5.490 ± 0.093
log n(He)/n(H)-2.805 ± 0.180
reduced χ²0.981 over 656 points
radial velocity-76.0 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 18:32:29

Fit — Lei (TLUSTY)

Teff [K]27400 ± 390
log g5.440 ± 0.020
log n(He)/n(H)-2.840 ± 0.340
gridsLei et al. 2019, ApJ 881, 135
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

cosmic rays3 pixels cancelled
source filespec-57865-HD170956N262719M02_sp07-046.fits.gz

Gaia astrometry

Gaia DR3 source4571972212486265216
parallax [mas]0.4203 ± 0.0643
G17.044
Gabs5.110
μα [mas/yr]-3.612
μδ [mas/yr]-6.752
l, b46.665, 31.845

Published (Culpan et al. 2022)

class (Culpan)sdB
Teff [K]30787 ± 154
log g5.96 ± 0.05
log y-2.76 ± 0.09
reference2021ApJS..256...28L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-1.23-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-1.10-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-1.04-40.0, 31.64.2-43.0, 43.0
Hε3970.07-1.01-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-0.99-20.0, 26.24.0-31.8, 32.0
Hη3835.38-0.97-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-0.96-16.0, 16.03.9-15.6, 16.7
Hι3770.63-0.96-13.0, 13.03.9-11.7, 11.6
Hκ3750.15-0.95-10.0, 10.03.9-7.4, 8.7
He II 46864685.70-1.19-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-1.13-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-1.02-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-1.25-15.0, 15.05.1-15.0, 15.0