LEDA 2801313
Observation
| Spectrum ID | 322310454_sp1 |
|---|---|
| Alt name | g1212429-500253 |
| z | 0.0482 |
| RA, Dec | 183.1785, -50.0482 |
| MJD | 60350.69 |
| SNR/Å B/R | 13.2/22.4 |
| Obs Airmass | 1.06 |
| SMSS ID | 322310454 |
| Closest SMSS | 6.33'', 322310455 |
| SMSS Mean r6"ap | 16.5 ± 0.1 |
| 2MASS Kext | 11.6 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.115 |
| Power law αν | -1.97 ± 0.03 |
| log L5100,AGN | 43.02 ± 0.02 |
| log HβBr/[O III] | -0.71 ± 0.06 |
| log ML5100/M☉ | 7.99 ± 0.11 |
| log MHα/M☉ | 7.21 ± 0.03 |
| log MHβ/M☉ | 7.74 ± 0.12 |
| log M[O III]/M☉ | 8.20 ± 0.11 |
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 | 39.84 ± 0.11 | 372 ± 63 | 252 ± 27 | 3.35 ± 0.72 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.56 ± 0.17 | 350 ± 63 | 148 ± 25 | 1.73 ± 0.41 |
| He II Narrow | 39.61 ± 0.14 | 350 ± 63 | 148 ± 25 | 1.95 ± 0.37 |
| He II Broad | 40.49 ± 0.09 | 7585 ± 132 | 3221 ± 55 | 15.20 ± 1.79 |
| Hβ Narrow | 40.57 ± 0.02 | 372 ± 63 | 252 ± 27 | 17.81 ± 0.62 |
| Hβ Broad | 40.68 ± 0.06 | 5643 ± 722 | 2244 ± 83 | 22.17 ± 1.63 |
| [O III] 5007 | 41.39 ± 0.01 | 372 ± 63 | 252 ± 27 | 117.59 ± 0.67 |
| He I Narrow | 39.59 ± 0.10 | 350 ± 63 | 148 ± 25 | 1.88 ± 0.27 |
| He I Broad | 39.96 ± 0.18 | 4428 ± 141 | 1880 ± 59 | 4.33 ± 0.96 |
| [O I] 6300 | 40.03 ± 0.04 | 350 ± 63 | 148 ± 25 | 5.19 ± 0.27 |
| Hα Narrow | 41.10 ± 0.01 | 350 ± 63 | 148 ± 25 | 61.93 ± 0.42 |
| Hα Broad | 41.61 ± 0.01 | 2941 ± 75 | 1365 ± 33 | 200.56 ± 1.25 |
| [N II] 6585 | 40.89 ± 0.01 | 350 ± 63 | 148 ± 25 | 38.10 ± 0.36 |
| [S II] 6718 | 40.55 ± 0.01 | 350 ± 63 | 148 ± 25 | 17.34 ± 0.30 |
| [S II] 6732 | 40.47 ± 0.01 | 350 ± 63 | 148 ± 25 | 14.53 ± 0.30 |
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 | 15.08 |
|---|---|
| Hβ Broad SNR | 1.40 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.51 |
| Host frac | 0.49 |
| log L5100,Host | 43.00 |
| Fe II/Hβ | 1.91 |
| Fe II/[O III] | 0.36 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 0 |
balmer_width | 1 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.