LEDA 3094039
Observation
| Spectrum ID | 11934338_sp1 |
|---|---|
| Alt name | g0023554-180251 |
| z | 0.0533 |
| RA, Dec | 5.9807, -18.0474 |
| MJD | 60259.46 |
| SNR/Å B/R | 12.0/20.9 |
| Obs Airmass | 1.03 |
| SMSS ID | 11934338 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.8 ± 0.1 |
| 2MASS Kext | 13.4 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.020 |
| Power law αν | -0.18 ± 0.19 |
| log L5100,AGN | 43.06 ± 0.04 |
| log HβBr/[O III] | -0.25 ± 0.03 |
| log ML5100/M☉ | 7.78 ± 0.06 |
| log MHα/M☉ | 7.13 ± 0.03 |
| log MHβ/M☉ | 7.72 ± 0.07 |
| log M[O III]/M☉ | 7.97 ± 0.05 |
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 | 40.02 ± 0.09 | 228 ± 62 | 208 ± 26 | 3.44 ± 0.56 |
| Hγ Broad | 40.58 ± 0.09 | 3087 ± 558 | 1239 ± 121 | 11.90 ± 1.33 |
| [O III] 4364 | 39.85 ± 0.09 | 196 ± 62 | 83 ± 25 | 2.33 ± 0.30 |
| He II Narrow | 39.67 ± 0.11 | 196 ± 62 | 83 ± 25 | 1.75 ± 0.30 |
| He II Broad | 40.72 ± 0.07 | 7523 ± 405 | 3195 ± 172 | 19.39 ± 1.78 |
| Hβ Narrow | 40.52 ± 0.02 | 228 ± 62 | 208 ± 26 | 13.49 ± 0.56 |
| Hβ Broad | 41.12 ± 0.03 | 4374 ± 264 | 1814 ± 95 | 52.70 ± 1.69 |
| [O III] 5007 | 41.37 ± 0.01 | 228 ± 62 | 208 ± 26 | 99.71 ± 0.74 |
| He I Narrow | 39.05 ± 0.22 | 196 ± 62 | 83 ± 25 | 0.64 ± 0.23 |
| He I Broad | 40.44 ± 0.06 | 3846 ± 251 | 1633 ± 106 | 15.99 ± 1.20 |
| [O I] 6300 | 39.94 ± 0.03 | 196 ± 62 | 83 ± 25 | 5.64 ± 0.26 |
| Hα Narrow | 40.89 ± 0.01 | 196 ± 62 | 83 ± 25 | 54.49 ± 0.42 |
| Hα Broad | 41.62 ± 0.01 | 2700 ± 70 | 1379 ± 63 | 288.40 ± 2.64 |
| [N II] 6585 | 40.51 ± 0.01 | 196 ± 62 | 83 ± 25 | 22.76 ± 0.37 |
| [S II] 6718 | 40.27 ± 0.02 | 196 ± 62 | 83 ± 25 | 13.58 ± 0.33 |
| [S II] 6732 | 40.20 ± 0.02 | 196 ± 62 | 83 ± 25 | 11.66 ± 0.32 |
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 | 12.65 |
|---|---|
| Hβ Broad SNR | 3.65 |
| Hγ Broad SNR | 1.80 |
| AGN frac | 0.51 |
| Host frac | 0.49 |
| log L5100,Host | 43.04 |
| Fe II/Hβ | 0.53 |
| Fe II/[O III] | 0.29 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 1 |
hb_width | 0 |
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.