J08516+2441

PG0848+249 · Culpan knownhsd

outside the grid χ²/N = 0.97

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

Observed spectrum in black, model in red, offset by line. Balmer series left, helium right.

Results and provenance

Fit — Bamberg

T_eff [K]	59285 ± 350
log g	6.001 ± 0.038
log n(He)/n(H)	-1.978 ± 0.046
reduced χ²	0.972 over 745 points
radial velocity	-126.0 km s⁻¹
resolution (FWHM)	2.50 Å
lines fitted	15
grids	HE-0.041.fits HE-0.125.fits HE-0.300.fits HE-0.550.fits +9 more
settled	outside the grid
fitted	04/09/2026 18:29:27

Observation

source file

spec-59586-HD085527N262435B01_sp02-218.fits.gz

Gaia astrometry

Gaia DR3 source	690001549964561792
parallax [mas]	0.9771 ± 0.0643
G	14.154
G_abs	4.161
μ_α [mas/yr]	-9.967
μ_δ [mas/yr]	-3.552
l, b	201.123, 36.541

Published (Culpan et al. 2022)

class (Culpan)	sdO
class (SIMBAD)	sdB
T_eff [K]	70000 ± 5940
log g	5.56 ± 0.10
log y	-1.79 ± 0.17
reference	2012MNRAS.427.2180N

Fitted lines

line	λ [Å]	shift [Å]	continuum at	±avg	fitted over
H_β	4861.32	-2.04	-40.0, 40.0	5.0	-45.0, 45.0
H_γ	4340.46	-1.82	-40.0, 36.8	4.5	-43.0, 43.0
H_δ	4101.73	-1.72	-40.0, 31.6	4.2	-43.0, 43.0
H_ε	3970.07	-1.67	-28.0, 30.0	4.1	-30.0, 35.0
H_ζ	3889.05	-1.63	-20.0, 26.2	4.0	-31.8, 32.0
H_η	3835.38	-1.61	-20.0, 14.6	4.0	-20.7, 21.8
H_θ	3797.90	-1.60	-16.0, 16.0	3.9	-15.6, 16.7
H_ι	3770.63	-1.58	-13.0, 13.0	3.9	-11.7, 11.6
He II 4686	4685.70	-1.97	-11.9, 11.9	4.9	-15.0, 13.8
He II 5412	5411.52	-2.27	-15.0, 15.0	5.6	-15.0, 15.0
He II 4542	4541.59	-1.91	-15.0, 20.0	4.7	-20.0, 20.0
He II 4200	4199.84	-1.77	-23.5, 33.8	4.3	-20.0, 20.0
He I 4472	4471.60	-1.88	-15.0, 15.0	4.6	-15.0, 15.0
He I 4026	4026.29	-1.69	-24.2, 15.0	4.2	-15.0, 15.0
He I 4922	4921.93	-2.07	-15.0, 15.0	5.1	-15.0, 15.0