J19091+3756

KIC2697388  ·  Culpan knownhsd

χ²/N = 0.99

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]24076 ± 271
log g5.390 ± 0.034
log n(He)/n(H)-2.837 ± 0.070
reduced χ²0.990 over 658 points
radial velocity-73.0 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 18:33:01

Fit — Lei (TLUSTY)

Teff [K]24320 ± 90
log g5.420 ± 0.020
log n(He)/n(H)-2.780 ± 0.060
gridsLei et al. 2018, ApJ 868, 70
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

cosmic rays9 pixels cancelled
source filespec-57908-KP190339N395439B01_sp07-250.fits.gz

Gaia astrometry

Gaia DR3 source2099149567821051904
parallax [mas]0.7780 ± 0.0270
G15.243
Gabs4.726
μα [mas/yr]-1.815
μδ [mas/yr]-4.314
l, b69.102, 13.076

Published (Culpan et al. 2022)

class (Culpan)sdBV
class (SIMBAD)sdB
Teff [K]24320 ± 90
log g5.42 ± 0.02
log y-2.78 ± 0.06
reference2018ApJ...868...70L

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-1.18-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-1.06-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-1.00-40.0, 31.64.2-43.0, 43.0
Hε3970.07-0.97-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-0.95-20.0, 26.24.0-31.8, 32.0
Hη3835.38-0.93-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-0.92-16.0, 16.03.9-15.6, 16.7
Hι3770.63-0.92-13.0, 13.03.9-11.7, 11.6
Hκ3750.15-0.91-10.0, 10.03.9-7.4, 8.7
He II 46864685.70-1.14-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-1.09-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-0.98-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-1.20-15.0, 15.05.1-15.0, 15.0