LEDA 89057
Observation
| Spectrum ID | 481135279_sp1 |
|---|---|
| Alt name | g1938044-510950 |
| z | 0.0403 |
| RA, Dec | 294.5183, -51.1637 |
| MJD | 60165.52 |
| SNR/Å B/R | 13.7/20.6 |
| Obs Airmass | 1.06 |
| SMSS ID | 481135279 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.7 ± 0.2 |
| 2MASS Kext | 11.6 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.053 |
| Power law αν | -1.21 ± 0.02 |
| log L5100,AGN | 43.40 ± 0.01 |
| log HβBr/[O III] | 0.48 ± 0.01 |
| log ML5100/M☉ | 7.60 ± 0.03 |
| log MHα/M☉ | 7.44 ± 0.02 |
| log MHβ/M☉ | 7.64 ± 0.03 |
| log M[O III]/M☉ | 7.57 ± 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 | 39.86 ± 0.15 | 304 ± 63 | 320 ± 28 | 1.29 ± 0.40 |
| Hγ Broad | 41.27 ± 0.02 | 3518 ± 115 | 1155 ± 36 | 32.66 ± 0.59 |
| [O III] 4364 | 39.67 ± 0.17 | 285 ± 63 | 121 ± 25 | 0.83 ± 0.18 |
| He II Narrow | 39.48 ± 0.20 | 285 ± 63 | 121 ± 25 | 0.57 ± 0.17 |
| He II Broad | 41.29 ± 0.02 | 7409 ± 195 | 3146 ± 82 | 37.09 ± 0.90 |
| Hβ Narrow | 40.29 ± 0.06 | 304 ± 63 | 321 ± 28 | 3.76 ± 0.38 |
| Hβ Broad | 41.69 ± 0.01 | 2990 ± 83 | 1492 ± 36 | 94.42 ± 0.80 |
| [O III] 5007 | 41.21 ± 0.01 | 304 ± 63 | 321 ± 28 | 32.34 ± 0.39 |
| He I Narrow | 39.47 ± 0.13 | 285 ± 63 | 121 ± 25 | 0.67 ± 0.12 |
| He I Broad | 40.85 ± 0.02 | 3532 ± 135 | 1500 ± 57 | 15.81 ± 0.42 |
| [O I] 6300 | 39.37 ± 0.15 | 285 ± 63 | 121 ± 25 | 0.55 ± 0.12 |
| Hα Narrow | 40.76 ± 0.02 | 285 ± 63 | 121 ± 25 | 14.16 ± 0.24 |
| Hα Broad | 42.14 ± 0.01 | 2649 ± 66 | 1188 ± 25 | 342.23 ± 0.68 |
| [N II] 6585 | 40.00 ± 0.06 | 285 ± 63 | 121 ± 25 | 2.46 ± 0.20 |
| [S II] 6718 | 39.96 ± 0.04 | 285 ± 63 | 121 ± 25 | 2.31 ± 0.14 |
| [S II] 6732 | 39.90 ± 0.04 | 285 ± 63 | 121 ± 25 | 2.01 ± 0.14 |
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 | 46.85 |
|---|---|
| Hβ Broad SNR | 18.50 |
| Hγ Broad SNR | 8.45 |
| AGN frac | 1.00 |
| Host frac | 0.00 |
| log L5100,Host | 40.85 |
| Fe II/Hβ | 0.17 |
| Fe II/[O III] | 0.52 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
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.