LEDA 700922
Observation
| Spectrum ID | 20353472_sp1 |
|---|---|
| Alt name | g0546596-314752 |
| z | 0.0937 |
| RA, Dec | 86.7482, -31.7977 |
| MJD | 59668.39 |
| SNR/Å B/R | 12.0/21.7 |
| Obs Airmass | 1.11 |
| SMSS ID | 20353472 |
| Closest SMSS | 6.15'', 20353473 |
| SMSS Mean r6"ap | 17.0 ± 0.2 |
| 2MASS Kext | 12.3 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.027 |
| Power law αν | 0.14 ± 0.26 |
| log L5100,AGN | 43.22 ± 0.04 |
| log HβBr/[O III] | 0.09 ± 0.40 |
| log ML5100/M☉ | 7.99 ± 0.03 |
| log MHα/M☉ | 7.56 ± 0.04 |
| log MHβ/M☉ | 7.84 ± 0.19 |
| log M[O III]/M☉ | 7.92 ± 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 | 39.67 ± 0.31 | 223 ± 63 | 144 ± 29 | 1.02 ± 0.68 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.70 ± 0.30 | 202 ± 63 | 83 ± 25 | 1.08 ± 0.46 |
| He II Narrow | 39.58 ± 0.30 | 202 ± 63 | 83 ± 25 | 0.97 ± 0.47 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.23 ± 0.11 | 223 ± 63 | 144 ± 29 | 4.63 ± 0.84 |
| Hβ Broad | 41.07 +0.71−0.08 | 5153 ± 34 | 1916 ± 25 | 32.28 ± 2.79 |
| [O III] 5007 | 40.98 ± 0.03 | 223 ± 63 | 144 ± 29 | 28.07 ± 1.01 |
| He I Narrow | 39.02 ± 0.41 | 202 ± 63 | 83 ± 25 | 0.43 ± 0.36 |
| He I Broad | 40.59 ± 0.09 | 4314 ± 73 | 1832 ± 30 | 16.00 ± 1.95 |
| [O I] 6300 | 39.32 ± 0.31 | 202 ± 63 | 83 ± 25 | 0.99 ± 0.51 |
| Hα Narrow | 40.76 ± 0.02 | 202 ± 63 | 83 ± 25 | 30.38 ± 0.67 |
| Hα Broad | 41.70 ± 0.01 | 4175 ± 171 | 1630 ± 29 | 261.98 ± 3.10 |
| [N II] 6585 | 40.68 ± 0.02 | 202 ± 63 | 83 ± 25 | 25.09 ± 0.67 |
| [S II] 6718 | 40.15 ± 0.05 | 202 ± 63 | 83 ± 25 | 7.72 ± 0.75 |
| [S II] 6732 | 40.13 ± 0.07 | 202 ± 63 | 83 ± 25 | 7.45 ± 0.73 |
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 | 5.26 |
|---|---|
| Hβ Broad SNR | 1.36 |
| Hγ Broad SNR | 0.86 |
| 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 | 1 |
balmer | 1 |
balmer_snr | 2 |
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.