LEDA 828880
Observation
| Spectrum ID | 91682989_sp1 |
|---|---|
| Alt name | g1149348-212330 |
| z | 0.0268 |
| RA, Dec | 177.3948, -21.3915 |
| MJD | 60020.59 |
| SNR/Å B/R | 13.4/35.8 |
| Obs Airmass | 1.01 |
| SMSS ID | 91682989 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.1 ± 0.0 |
| 2MASS Kext | 12.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.035 |
| Power law αν | 0.00 ± 0.15 |
| log L5100,AGN | 42.54 ± 0.02 |
| log HβBr/[O III] | <-0.72 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.49 ± 0.07 |
| log MHβ/M☉ | — |
| log M[O III]/M☉ | — |
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 | 39.64 ± 0.07 | 252 ± 62 | 308 ± 29 | 4.74 ± 0.83 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 38.97 ± 0.23 | 243 ± 62 | 102 ± 25 | 1.02 ± 0.34 |
| He II Narrow | 38.80 ± 0.28 | 243 ± 62 | 102 ± 25 | 0.79 ± 0.32 |
| He II Broad | 39.94 ± 0.09 | 4045 ± 64 | 1718 ± 26 | 10.89 ± 1.32 |
| Hβ Narrow | 40.16 ± 0.02 | 252 ± 62 | 308 ± 29 | 19.49 ± 0.78 |
| Hβ Broad | <39.83 | — | — | — |
| [O III] 5007 | 40.55 ± 0.01 | 252 ± 62 | 308 ± 29 | 50.56 ± 0.83 |
| He I Narrow | 38.70 ± 0.16 | 243 ± 62 | 102 ± 25 | 0.98 ± 0.20 |
| He I Broad | 39.15 ± 0.18 | 2013 ± 64 | 855 ± 26 | 2.80 ± 0.59 |
| [O I] 6300 | 39.35 ± 0.04 | 243 ± 62 | 102 ± 25 | 5.04 ± 0.27 |
| Hα Narrow | 40.65 ± 0.01 | 243 ± 62 | 102 ± 25 | 110.50 ± 0.31 |
| Hα Broad | 40.53 ± 0.01 | 2755 ± 107 | 1111 ± 34 | 82.97 ± 1.08 |
| [N II] 6585 | 40.34 ± 0.01 | 243 ± 62 | 102 ± 25 | 54.28 ± 0.30 |
| [S II] 6718 | 39.96 ± 0.01 | 243 ± 62 | 102 ± 25 | 23.60 ± 0.33 |
| [S II] 6732 | 39.89 ± 0.01 | 243 ± 62 | 102 ± 25 | 19.88 ± 0.31 |
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 | 3.92 |
|---|---|
| Hβ Broad SNR | 0.27 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.41 |
| Host frac | 0.59 |
| log L5100,Host | 42.69 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 2 |
balmer_snr | 2 |
hb_width | 2 |
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.