LEDA 3095669
Observation
| Spectrum ID | 21947081_sp1 |
|---|---|
| Alt name | g0409135-112502 |
| z | 0.0914 |
| RA, Dec | 62.3064, -11.4173 |
| MJD | 60258.63 |
| SNR/Å B/R | 14.3/16.6 |
| Obs Airmass | 1.06 |
| SMSS ID | 21947081 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.7 ± 0.2 |
| 2MASS Kext | 12.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.054 |
| Power law αν | -0.49 ± 0.02 |
| log L5100,AGN | 44.36 ± 0.01 |
| log HβBr/[O III] | 0.57 ± 0.01 |
| log ML5100/M☉ | 8.15 ± 0.02 |
| log MHα/M☉ | 8.08 ± 0.05 |
| log MHβ/M☉ | 8.27 ± 0.02 |
| log M[O III]/M☉ | 8.19 ± 0.03 |
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 | 40.57 ± 0.29 | 307 ± 63 | 290 ± 27 | 0.66 ± 0.39 |
| Hγ Broad | 42.64 ± 0.02 | 3726 ± 197 | 3708 ± 55 | 76.58 ± 1.39 |
| [O III] 4364 | 40.58 ± 0.21 | 287 ± 63 | 121 ± 25 | 0.67 ± 0.20 |
| He II Narrow | 40.64 ± 0.15 | 287 ± 63 | 121 ± 25 | 0.85 ± 0.19 |
| He II Broad | 42.35 ± 0.03 | 12949 ± 63 | 5499 ± 25 | 43.44 ± 1.35 |
| Hβ Narrow | 41.06 ± 0.10 | 307 ± 63 | 290 ± 27 | 2.36 ± 0.42 |
| Hβ Broad | 42.78 ± 0.01 | 3496 ± 82 | 2107 ± 34 | 125.48 ± 1.15 |
| [O III] 5007 | 42.21 ± 0.01 | 307 ± 63 | 291 ± 27 | 35.31 ± 0.45 |
| He I Narrow | 39.94 ± 0.35 | 287 ± 63 | 121 ± 25 | 0.24 ± 0.14 |
| He I Broad | 41.70 ± 0.03 | 3645 ± 73 | 1548 ± 30 | 13.78 ± 0.57 |
| [O I] 6300 | 40.26 ± 0.21 | 287 ± 63 | 121 ± 25 | 0.56 ± 0.19 |
| Hα Narrow | 41.56 ± 0.02 | 287 ± 63 | 121 ± 25 | 11.75 ± 0.32 |
| Hα Broad | 43.11 ± 0.01 | 2805 ± 65 | 1427 ± 25 | 420.29 ± 1.03 |
| [N II] 6585 | 41.37 ± 0.03 | 287 ± 63 | 121 ± 25 | 7.72 ± 0.32 |
| [S II] 6718 | 40.99 ± 0.04 | 287 ± 63 | 121 ± 25 | 3.28 ± 0.23 |
| [S II] 6732 | 40.93 ± 0.04 | 287 ± 63 | 121 ± 25 | 2.88 ± 0.22 |
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 | 37.97 |
|---|---|
| Hβ Broad SNR | 17.54 |
| Hγ Broad SNR | 10.09 |
| AGN frac | 1.00 |
| Host frac | 0.00 |
| log L5100,Host | 41.77 |
| Fe II/Hβ | 0.37 |
| Fe II/[O III] | 1.36 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
hb_width | 1 |
balmer_width | 0 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.