LEDA 89032
Observation
| Spectrum ID | 484532408_sp1 |
|---|---|
| Alt name | g1847028-783150 |
| z | 0.0743 |
| RA, Dec | 281.7616, -78.5304 |
| MJD | 60902.44 |
| SNR/Å B/R | 18.5/29.1 |
| Obs Airmass | 1.48 |
| SMSS ID | 484532408 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.4 ± 0.1 |
| 2MASS Kext | 11.6 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.095 |
| Power law αν | 0.41 ± 0.07 |
| log L5100,AGN | 43.98 ± 0.01 |
| log HβBr/[O III] | 0.34 ± 0.16 |
| log ML5100/M☉ | 8.34 ± 0.02 |
| log MHα/M☉ | 8.49 ± 0.04 |
| log MHβ/M☉ | 8.38 ± 0.08 |
| log M[O III]/M☉ | 8.39 ± 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 | 40.29 ± 0.21 | 351 ± 63 | 238 ± 28 | 0.70 ± 0.30 |
| Hγ Broad | 41.87 ± 0.02 | 4800 ± 142 | 1775 ± 53 | 26.12 ± 0.68 |
| [O III] 4364 | 40.53 ± 0.11 | 339 ± 63 | 143 ± 25 | 1.23 ± 0.18 |
| He II Narrow | 39.81 ± 0.32 | 339 ± 63 | 143 ± 25 | 0.28 ± 0.16 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.79 ± 0.06 | 351 ± 63 | 238 ± 28 | 2.92 ± 0.36 |
| Hβ Broad | 42.24 +0.30−0.02 | 5238 ± 97 | 1947 ± 41 | 81.02 ± 0.83 |
| [O III] 5007 | 41.89 ± 0.01 | 351 ± 63 | 238 ± 28 | 39.69 ± 0.46 |
| He I Narrow | 40.03 ± 0.16 | 339 ± 63 | 143 ± 25 | 0.79 ± 0.26 |
| He I Broad | 41.71 ± 0.02 | 7637 ± 167 | 3243 ± 70 | 38.15 ± 0.95 |
| [O I] 6300 | 40.50 ± 0.05 | 339 ± 63 | 143 ± 25 | 2.80 ± 0.21 |
| Hα Narrow | 41.33 ± 0.01 | 339 ± 63 | 143 ± 25 | 20.91 ± 0.38 |
| Hα Broad | 42.98 ± 0.01 | 4925 ± 65 | 2145 ± 29 | 931.98 ± 1.91 |
| [N II] 6585 | 41.17 ± 0.02 | 339 ± 63 | 143 ± 25 | 14.44 ± 0.36 |
| [S II] 6718 | 40.72 ± 0.03 | 339 ± 63 | 143 ± 25 | 5.38 ± 0.27 |
| [S II] 6732 | 40.67 ± 0.04 | 339 ± 63 | 143 ± 25 | 4.82 ± 0.34 |
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 | 41.30 |
|---|---|
| Hβ Broad SNR | 10.44 |
| Hγ Broad SNR | 5.41 |
| AGN frac | 0.72 |
| Host frac | 0.28 |
| log L5100,Host | 43.57 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 2 |
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.