LEDA 919814
Observation
| Spectrum ID | 12180811_sp1 |
|---|---|
| Alt name | g0051176-144751 |
| z | 0.0910 |
| RA, Dec | 12.8234, -14.7975 |
| MJD | 60225.61 |
| SNR/Å B/R | 16.0/25.3 |
| Obs Airmass | 1.06 |
| SMSS ID | 12180811 |
| Closest SMSS | 6.23'', 12180810 |
| SMSS Mean r6"ap | 16.9 ± 0.1 |
| 2MASS Kext | 12.9 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.019 |
| Power law αν | 0.42 ± 0.07 |
| log L5100,AGN | 43.24 ± 0.02 |
| log HβBr/[O III] | -0.29 ± 0.38 |
| log ML5100/M☉ | 8.02 ± 0.03 |
| log MHα/M☉ | 8.10 ± 0.02 |
| log MHβ/M☉ | 7.89 ± 0.18 |
| log M[O III]/M☉ | 8.17 ± 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 | 40.05 ± 0.13 | 260 ± 63 | 206 ± 28 | 2.24 ± 0.60 |
| Hγ Broad | 40.95 ± 0.07 | 4051 ± 419 | 1610 ± 63 | 17.69 ± 1.39 |
| [O III] 4364 | 40.03 ± 0.11 | 245 ± 63 | 103 ± 25 | 2.13 ± 0.33 |
| He II Narrow | 39.64 ± 0.27 | 245 ± 63 | 103 ± 25 | 1.04 ± 0.35 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.47 ± 0.05 | 260 ± 63 | 206 ± 28 | 7.63 ± 0.72 |
| Hβ Broad | 41.14 +0.69−0.07 | 5277 ± 122 | 1964 ± 50 | 36.11 ± 1.89 |
| [O III] 5007 | 41.43 ± 0.01 | 260 ± 63 | 206 ± 28 | 75.72 ± 0.85 |
| He I Narrow | 39.39 ± 0.26 | 245 ± 63 | 103 ± 25 | 1.02 ± 0.38 |
| He I Broad | 40.86 ± 0.05 | 5798 ± 124 | 2462 ± 52 | 29.43 ± 2.23 |
| [O I] 6300 | 40.04 ± 0.07 | 245 ± 63 | 103 ± 25 | 5.35 ± 0.59 |
| Hα Narrow | 41.02 ± 0.01 | 245 ± 63 | 103 ± 25 | 55.58 ± 0.66 |
| Hα Broad | 42.23 ± 0.01 | 5296 ± 75 | 2320 ± 48 | 921.69 ± 5.18 |
| [N II] 6585 | 40.77 ± 0.02 | 245 ± 63 | 103 ± 25 | 31.81 ± 0.68 |
| [S II] 6718 | 40.45 ± 0.03 | 245 ± 63 | 103 ± 25 | 15.80 ± 0.75 |
| [S II] 6732 | 40.42 ± 0.03 | 245 ± 63 | 103 ± 25 | 14.91 ± 0.75 |
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 | 15.84 |
|---|---|
| Hβ Broad SNR | 1.93 |
| Hγ Broad SNR | 1.84 |
| AGN frac | 0.33 |
| Host frac | 0.67 |
| log L5100,Host | 43.54 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
l5100 | 2 |
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.