LEDA 50427
Observation
| Spectrum ID | 101980617_sp1 |
|---|---|
| Alt name | g1408068-302354 |
| z | 0.0237 |
| RA, Dec | 212.0283, -30.3983 |
| MJD | 60077.52 |
| SNR/Å B/R | 15.0/23.1 |
| Obs Airmass | 1.00 |
| SMSS ID | 101980617 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.4 ± 0.1 |
| 2MASS Kext | 12.4 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.051 |
| Power law αν | -0.64 ± 0.08 |
| log L5100,AGN | 43.03 ± 0.01 |
| log HβBr/[O III] | 0.20 ± 0.01 |
| log ML5100/M☉ | 7.44 ± 0.03 |
| log MHα/M☉ | 7.12 ± 0.02 |
| log MHβ/M☉ | 7.49 ± 0.03 |
| log M[O III]/M☉ | 7.54 ± 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 | 39.63 ± 0.11 | 298 ± 63 | 204 ± 26 | 1.64 ± 0.33 |
| Hγ Broad | 40.87 ± 0.02 | 2912 ± 126 | 1075 ± 41 | 28.14 ± 0.66 |
| [O III] 4364 | 39.88 ± 0.05 | 281 ± 63 | 117 ± 25 | 2.95 ± 0.20 |
| He II Narrow | 39.57 ± 0.07 | 281 ± 63 | 117 ± 25 | 1.61 ± 0.18 |
| He II Broad | 40.88 ± 0.02 | 5490 ± 149 | 2331 ± 62 | 32.66 ± 0.78 |
| Hβ Narrow | 40.09 ± 0.03 | 298 ± 63 | 204 ± 26 | 5.54 ± 0.32 |
| Hβ Broad | 41.35 ± 0.01 | 3000 ± 64 | 1476 ± 54 | 99.75 ± 0.91 |
| [O III] 5007 | 41.14 ± 0.01 | 298 ± 63 | 204 ± 26 | 65.46 ± 0.34 |
| He I Narrow | 38.70 ± 0.30 | 281 ± 63 | 117 ± 25 | 0.29 ± 0.13 |
| He I Broad | 40.36 ± 0.03 | 2736 ± 137 | 1162 ± 58 | 13.25 ± 0.51 |
| [O I] 6300 | 39.54 ± 0.04 | 281 ± 63 | 117 ± 25 | 2.23 ± 0.15 |
| Hα Narrow | 40.52 ± 0.01 | 281 ± 63 | 117 ± 25 | 22.66 ± 0.28 |
| Hα Broad | 41.82 ± 0.01 | 2324 ± 64 | 1139 ± 25 | 443.45 ± 0.84 |
| [N II] 6585 | 39.74 ± 0.05 | 281 ± 63 | 117 ± 25 | 3.78 ± 0.23 |
| [S II] 6718 | 39.69 ± 0.04 | 281 ± 63 | 117 ± 25 | 3.43 ± 0.19 |
| [S II] 6732 | 39.53 ± 0.05 | 281 ± 63 | 117 ± 25 | 2.40 ± 0.18 |
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 | 51.36 |
|---|---|
| Hβ Broad SNR | 18.06 |
| Hγ Broad SNR | 8.26 |
| AGN frac | 0.81 |
| Host frac | 0.19 |
| log L5100,Host | 42.39 |
| Fe II/Hβ | 0.13 |
| Fe II/[O III] | 0.20 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
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.