J09503-0104sdO

09:50:19.73 -01:04:23.38  ·  Culpan hotsd

outside the grid helium pinned 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]58127 ± 1284
log g7.316 ± 0.102
log n(He)/n(H)1.004 ± 0.897
reduced χ²0.984 over 535 points
radial velocity-1402.0 km s−1
resolution (FWHM)2.50 Å
lines fitted15
gridsHE-0.041.fits
HE-0.125.fits
HE-0.300.fits
HE-0.550.fits
+9 more
settledoutside the grid
fitted04/09/2026 18:30:00

Observation

S/N (classifier)50.4
source filespec-56389-HD095639S002741F01_sp10-222.fits.gz

Gaia astrometry

Gaia DR3 source3833693825659533056
parallax [mas]0.8963 ± 0.0908
G16.997
BP − RP-0.460
Gabs6.759
μα [mas/yr]-0.511
μδ [mas/yr]-7.939
RUWE0.983
l, b238.342, 38.142
selectionf_plx

Classifier

NEW

auto: He II/He I 5.2, EW 0.78, Mg I b suggests a companion but Ca II does not (0.4 sigma)

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-22.73-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-20.30-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-19.18-40.0, 31.64.2-43.0, 43.0
Hε3970.07-18.57-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-18.19-20.0, 26.24.0-31.8, 32.0
Hη3835.38-17.94-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-17.76-16.0, 16.03.9-15.6, 16.7
Hι3770.63-17.63-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-21.91-11.9, 11.94.9-15.0, 13.8
He II 54125411.52-25.31-15.0, 15.05.6-15.0, 15.0
He II 45424541.59-21.24-15.0, 20.04.7-20.0, 20.0
He II 42004199.84-19.64-23.5, 33.84.3-20.0, 20.0
He I 44724471.60-20.91-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-18.83-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-23.02-15.0, 15.05.1-15.0, 15.0