LEDA 192028
Observation
| Spectrum ID | 6929341_sp1 |
|---|---|
| Alt name | g2222466-081944 |
| z | 0.0824 |
| RA, Dec | 335.6943, -8.3289 |
| MJD | 60093.8 |
| SNR/Å B/R | 15.4/22.2 |
| Obs Airmass | 1.11 |
| SMSS ID | 6929341 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.4 ± 0.0 |
| 2MASS Kext | 12.4 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.049 |
| Power law αν | -0.80 ± 0.17 |
| log L5100,AGN | 43.68 ± 0.02 |
| log HβBr/[O III] | -0.92 ± 0.64 |
| log ML5100/M☉ | 6.94 ± 0.03 |
| log MHα/M☉ | 7.35 ± 0.03 |
| log MHβ/M☉ | 6.42 ± 0.31 |
| log M[O III]/M☉ | 6.98 ± 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 | 40.64 ± 0.09 | 377 ± 67 | 398 ± 26 | 3.83 ± 0.45 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.87 ± 0.23 | 233 ± 63 | 98 ± 25 | 0.65 ± 0.20 |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 41.22 ± 0.02 | 377 ± 67 | 398 ± 26 | 16.73 ± 0.47 |
| Hβ Broad | 40.69 +1.20−0.08 | 1222 ± 43 | 345 ± 25 | 4.84 ± 0.50 |
| [O III] 5007 | 41.61 ± 0.01 | 377 ± 67 | 398 ± 26 | 42.20 ± 0.53 |
| He I Narrow | 39.82 ± 0.20 | 233 ± 63 | 98 ± 25 | 0.84 ± 0.23 |
| He I Broad | 40.99 ± 0.05 | 3034 ± 80 | 1288 ± 33 | 12.36 ± 0.76 |
| [O I] 6300 | 40.10 ± 0.08 | 233 ± 63 | 98 ± 25 | 1.75 ± 0.21 |
| Hα Narrow | 41.42 ± 0.01 | 233 ± 63 | 98 ± 25 | 38.50 ± 0.28 |
| Hα Broad | 42.25 ± 0.01 | 2206 ± 64 | 1116 ± 26 | 258.03 ± 1.57 |
| [N II] 6585 | 41.20 ± 0.01 | 233 ± 63 | 98 ± 25 | 22.97 ± 0.26 |
| [S II] 6718 | 40.76 ± 0.02 | 233 ± 63 | 98 ± 25 | 8.68 ± 0.36 |
| [S II] 6732 | 40.71 ± 0.03 | 233 ± 63 | 98 ± 25 | 7.62 ± 0.38 |
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 | 25.44 |
|---|---|
| Hβ Broad SNR | 1.97 |
| Hγ Broad SNR | 0.91 |
| AGN frac | 0.64 |
| Host frac | 0.36 |
| log L5100,Host | 43.42 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 1 |
balmer_width | 2 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.