LEDA 3083234
Observation
| Spectrum ID | 489837842_sp1 |
|---|---|
| Alt name | g2222311-462422 |
| z | 0.0909 |
| RA, Dec | 335.6294, -46.4061 |
| MJD | 60172.56 |
| SNR/Å B/R | 18.9/28.9 |
| Obs Airmass | 1.07 |
| SMSS ID | 489837842 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.5 ± 0.1 |
| 2MASS Kext | 12.6 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.011 |
| Power law αν | 0.47 ± 0.03 |
| log L5100,AGN | 43.47 ± 0.01 |
| log HβBr/[O III] | -0.39 ± 0.36 |
| log ML5100/M☉ | 8.30 ± 0.02 |
| log MHα/M☉ | 8.32 ± 0.02 |
| log MHβ/M☉ | 8.21 ± 0.17 |
| log M[O III]/M☉ | 8.55 ± 0.02 |
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 | 40.22 ± 0.12 | 335 ± 63 | 229 ± 26 | 1.95 ± 0.39 |
| Hγ Broad | 41.37 ± 0.04 | 6163 ± 1056 | 2616 ± 113 | 27.89 ± 1.32 |
| [O III] 4364 | 40.16 ± 0.10 | 307 ± 63 | 128 ± 25 | 1.71 ± 0.29 |
| He II Narrow | 40.05 ± 0.12 | 307 ± 63 | 128 ± 25 | 1.60 ± 0.27 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.66 ± 0.04 | 335 ± 63 | 229 ± 26 | 7.12 ± 0.49 |
| Hβ Broad | 41.45 +0.68−0.04 | 6475 ± 136 | 2418 ± 55 | 43.87 ± 1.49 |
| [O III] 5007 | 41.84 ± 0.01 | 335 ± 63 | 229 ± 26 | 115.82 ± 0.64 |
| He I Narrow | 39.72 ± 0.15 | 307 ± 63 | 128 ± 25 | 1.30 ± 0.29 |
| He I Broad | 40.99 ± 0.04 | 4809 ± 193 | 2042 ± 81 | 24.25 ± 4.20 |
| [O I] 6300 | 40.49 ± 0.03 | 307 ± 63 | 128 ± 25 | 9.07 ± 0.46 |
| Hα Narrow | 41.16 ± 0.01 | 307 ± 63 | 128 ± 25 | 47.27 ± 0.51 |
| Hα Broad | 42.29 ± 0.01 | 6576 ± 84 | 2451 ± 27 | 640.35 ± 2.49 |
| [N II] 6585 | 41.21 ± 0.01 | 307 ± 63 | 128 ± 25 | 52.94 ± 0.52 |
| [S II] 6718 | 40.73 ± 0.02 | 307 ± 63 | 128 ± 25 | 18.55 ± 0.62 |
| [S II] 6732 | 40.76 ± 0.02 | 307 ± 63 | 128 ± 25 | 20.03 ± 0.60 |
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 | 14.13 |
|---|---|
| Hβ Broad SNR | 2.77 |
| Hγ Broad SNR | 2.63 |
| AGN frac | 0.43 |
| Host frac | 0.57 |
| log L5100,Host | 43.58 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 2 |
balmer | 1 |
balmer_snr | 1 |
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.