J08275+1753

GALEXJ08275+1753  ·  Culpan knownhsd

χ²/N = 0.96

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]28291 ± 168
log g5.654 ± 0.027
log n(He)/n(H)-1.198 ± 0.029
reduced χ²0.961 over 637 points
radial velocity-201.0 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 18:29:13

Fit — Lei (TLUSTY)

Teff [K]29460 ± 200
log g5.640 ± 0.030
log n(He)/n(H)-1.260 ± 0.030
gridsLei et al. 2018, ApJ 868, 70
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

cosmic rays3 pixels cancelled
source filespec-56980-GAC125N19B1_sp07-224.fits.gz

Gaia astrometry

Gaia DR3 source662146419308286976
parallax [mas]1.1079 ± 0.0438
G14.558
Gabs4.835
μα [mas/yr]-17.582
μδ [mas/yr]-15.936
l, b206.577, 29.019

Published (Culpan et al. 2022)

class (Culpan)sdB
class (SIMBAD)sdB
Teff [K]29550 ± 950
log g5.55 ± 0.09
log y-1.28 ± 0.10
reference2012MNRAS.427.2180N

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-3.26-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-2.91-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-2.75-40.0, 31.64.2-43.0, 43.0
Hε3970.07-2.66-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-2.61-20.0, 26.24.0-31.8, 32.0
Hη3835.38-2.57-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-2.55-16.0, 16.03.9-15.6, 16.7
Hι3770.63-2.53-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-3.14-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-3.00-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-2.70-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-3.30-15.0, 15.05.1-15.0, 15.0