J17541-6049sdO
PN-HaTr7 · 17:54:09.46 -60:49:57.86 · Culpan knownhsd
outside the grid 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
Results and provenance
Fit — Bamberg
| Teff [K] | 66225 ± 298 |
| log g | 6.520 ± 0.046 |
| log n(He)/n(H) | -2.484 ± 0.097 |
| reduced χ² | 0.985 over 744 points |
| radial velocity | -80.0 km s−1 |
| resolution (FWHM) | 2.00 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 19:10:07 |
Observation
| telescope | LCO Du Pont |
| survey / programme | MWM / mwm_cb |
| field · MJD | 106503 · 60481 |
| date | 2024-06-20 |
| catalogid | 63050396176916224 |
| exposure | 900 s in 1 |
| airmass | 1.21 |
| seeing (50%) | 1.42″ |
| E(B−V) | 0.096 |
| pipeline | v6_2_1 |
| cosmic rays | 4 pixels cancelled |
| S/N (classifier) | 29.0 |
| source file | spec-106503-60481-63050396176916224.fits |
Gaia astrometry
| Gaia DR3 source | 5911656865276078080 |
| parallax [mas] | 0.5869 ± 0.0342 |
| G | 14.829 |
| BP − RP | -0.307 |
| Gabs | 3.763 |
| μα [mas/yr] | -3.472 |
| μδ [mas/yr] | -11.801 |
| l, b | 332.507, -16.911 |
Published (Culpan et al. 2022)
| class (Culpan) | O(H)+dM |
| Teff [K] | 95300 ± 2000 |
| log g | 5.79 ± 0.04 |
| log y | -0.96 ± 0.03 |
| reference | 2017AJ....153...24H |
Classifier
AGREES
fitted Teff 95300 logg 5.79 logY -0.96 2017AJ....153...24H
auto: He II/He I 7.8, EW 1.17, Mg I b suggests a companion but Ca II does not (-0.2 sigma)
Fitted lines
| line | λ [Å] | shift [Å] | continuum at | ±avg | fitted over |
| Hβ | 4861.32 | -1.30 | -40.0, 40.0 | 5.0 | -45.0, 45.0 |
| Hγ | 4340.46 | -1.16 | -40.0, 36.8 | 4.5 | -43.0, 43.0 |
| Hδ | 4101.73 | -1.09 | -40.0, 31.6 | 4.2 | -43.0, 43.0 |
| Hε | 3970.07 | -1.06 | -28.0, 30.0 | 4.1 | -30.0, 35.0 |
| Hζ | 3889.05 | -1.04 | -20.0, 26.2 | 4.0 | -31.8, 32.0 |
| Hη | 3835.38 | -1.02 | -20.0, 14.6 | 4.0 | -20.7, 21.8 |
| Hθ | 3797.90 | -1.01 | -16.0, 16.0 | 3.9 | -15.6, 16.7 |
| Hι | 3770.63 | -1.01 | -13.0, 13.0 | 3.9 | -11.7, 11.6 |
| He II 4686 | 4685.70 | -1.25 | -11.9, 11.9 | 4.9 | -15.0, 13.8 |
| He II 5412 | 5411.52 | -1.44 | -15.0, 15.0 | 5.6 | -15.0, 15.0 |
| He II 4542 | 4541.59 | -1.21 | -15.0, 20.0 | 4.7 | -20.0, 20.0 |
| He II 4200 | 4199.84 | -1.12 | -23.5, 33.8 | 4.3 | -20.0, 20.0 |
| He I 4472 | 4471.60 | -1.19 | -15.0, 15.0 | 4.6 | -15.0, 15.0 |
| He I 4026 | 4026.29 | -1.07 | -24.2, 15.0 | 4.2 | -15.0, 15.0 |
| He I 4922 | 4921.93 | -1.31 | -15.0, 15.0 | 5.1 | -15.0, 15.0 |