J15271+1016

SDSSJ152707.20+101612.5  ·  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]33736 ± 903
log g5.260 ± 0.120
log n(He)/n(H)-1.837 ± 0.112
reduced χ²0.976 over 640 points
radial velocity-37.0 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 18:31:38

Fit — Lei (TLUSTY)

Teff [K]33230 ± 730
log g5.150 ± 0.050
log n(He)/n(H)-1.970 ± 0.080
gridsLei et al. 2020, ApJ 889, 117
SYNSPEC 49 spectra from NLTE TLUSTY 204 model atmospheres, through XTgrid

Observation

source filespec-57869-HD153553N111556M01_sp10-176.fits.gz

Gaia astrometry

Gaia DR3 source1165815825359631232
parallax [mas]0.3518 ± 0.0444
G16.112
Gabs4.016
μα [mas/yr]1.473
μδ [mas/yr]-10.136
l, b15.813, 49.697

Published (Culpan et al. 2022)

class (Culpan)sdB
class (SIMBAD)sdB0He6+G/K
Teff [K]33744 ± 1072
log g5.12 ± 0.16
log y-2.20 ± 0.20
reference2017OAst...26..164G

Fitted lines

lineλ [Å]shift [Å]continuum at±avgfitted over
Hβ4861.32-0.60-40.0, 40.05.0-45.0, 45.0
Hγ4340.46-0.54-40.0, 36.84.5-43.0, 43.0
Hδ4101.73-0.51-40.0, 31.64.2-43.0, 43.0
Hε3970.07-0.49-28.0, 30.04.1-30.0, 35.0
Hζ3889.05-0.48-20.0, 26.24.0-31.8, 32.0
Hη3835.38-0.47-20.0, 14.64.0-20.7, 21.8
Hθ3797.90-0.47-16.0, 16.03.9-15.6, 16.7
Hι3770.63-0.47-13.0, 13.03.9-11.7, 11.6
He II 46864685.70-0.58-11.9, 11.94.9-15.0, 13.8
He I 44724471.60-0.55-15.0, 15.04.6-15.0, 15.0
He I 40264026.29-0.50-24.2, 15.04.2-15.0, 15.0
He I 49224921.93-0.61-15.0, 15.05.1-15.0, 15.0