LEDA 3674259
Observation
| Spectrum ID | 18163704_sp1 |
|---|---|
| Alt name | g0411136-263623 |
| z | 0.0810 |
| RA, Dec | 62.8068, -26.6063 |
| MJD | 60554.78 |
| SNR/Å B/R | 17.3/31.7 |
| Obs Airmass | 1.02 |
| SMSS ID | 18163704 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.1 ± 0.0 |
| 2MASS Kext | 12.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.028 |
| Power law αν | -0.84 ± 0.39 |
| log L5100,AGN | 42.97 ± 0.07 |
| log HβBr/[O III] | <-0.38 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 7.62 ± 0.05 |
| log MHβ/M☉ | — |
| log M[O III]/M☉ | — |
Spatial extraction & sky subtraction region
Spaxel scale: 1 arcsec² — Flux units: erg s⁻¹ cm⁻² Å⁻¹
Apertures: object (solid), background (dashed)
Spectrum decomposition
Emission line measurements
| Line | log L (erg s⁻¹) | FWHM (km s⁻¹) | σ (km s⁻¹) | EW (Å) |
|---|---|---|---|---|
| Hγ Narrow | 39.75 ± 0.40 | 511 ± 63 | 464 ± 34 | 2.52 ± 2.21 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.88 ± 0.25 | 477 ± 62 | 202 ± 25 | 3.42 ± 1.36 |
| He II Narrow | 40.18 ± 0.15 | 477 ± 62 | 202 ± 25 | 7.41 ± 1.37 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.52 ± 0.10 | 511 ± 63 | 465 ± 34 | 16.79 ± 2.32 |
| Hβ Broad | <40.82 | — | — | — |
| [O III] 5007 | 41.20 ± 0.02 | 511 ± 63 | 465 ± 34 | 83.42 ± 2.60 |
| He I Narrow | 39.64 ± 0.28 | 477 ± 62 | 202 ± 25 | 2.75 ± 1.21 |
| He I Broad | — | — | — | — |
| [O I] 6300 | 39.54 ± 0.31 | 477 ± 62 | 202 ± 25 | 2.36 ± 1.11 |
| Hα Narrow | 41.12 ± 0.01 | 477 ± 62 | 202 ± 25 | 95.45 ± 1.39 |
| Hα Broad | 41.73 ± 0.03 | 4390 ± 235 | 5170 ± 85 | 387.31 ± 8.43 |
| [N II] 6585 | 40.93 ± 0.02 | 477 ± 62 | 202 ± 25 | 61.89 ± 1.34 |
| [S II] 6718 | 40.39 ± 0.06 | 477 ± 62 | 202 ± 25 | 18.36 ± 2.03 |
| [S II] 6732 | 40.37 ± 0.07 | 477 ± 62 | 202 ± 25 | 17.28 ± 1.79 |
All narrow line widths are tied to narrow [O III] 5007Å. [O III] 5007Å and narrow Hβ include a second narrow component not tied to other narrow lines.
Emission summary
| Hα Broad SNR | 2.69 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.12 |
| Host frac | 0.88 |
| log L5100,Host | 43.85 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 2 |
balmer | 2 |
balmer_snr | 2 |
hb_width | 2 |
balmer_width | 2 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.