LEDA 507799
Observation
| Spectrum ID | 488376126_sp1 |
|---|---|
| Alt name | g2137428-470035 |
| z | 0.0884 |
| RA, Dec | 324.4285, -47.0095 |
| MJD | 60087.79 |
| SNR/Å B/R | 10.9/14.0 |
| Obs Airmass | 1.05 |
| SMSS ID | 488376126 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 17.3 ± 0.1 |
| 2MASS Kext | 13.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.023 |
| Power law αν | 0.45 ± 0.05 |
| log L5100,AGN | 43.42 ± 0.01 |
| log HβBr/[O III] | 0.44 ± 0.18 |
| log ML5100/M☉ | 7.48 ± 0.02 |
| log MHα/M☉ | 7.33 ± 0.02 |
| log MHβ/M☉ | 7.46 ± 0.10 |
| log M[O III]/M☉ | 7.39 ± 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 | 39.81 ± 0.26 | 258 ± 63 | 202 ± 29 | 0.85 ± 0.40 |
| Hγ Broad | 41.25 ± 0.03 | 2697 ± 161 | 978 ± 45 | 22.38 ± 0.89 |
| [O III] 4364 | 39.81 ± 0.20 | 228 ± 63 | 95 ± 25 | 0.85 ± 0.24 |
| He II Narrow | 39.81 ± 0.17 | 228 ± 63 | 95 ± 25 | 1.02 ± 0.26 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.04 ± 0.17 | 258 ± 63 | 202 ± 29 | 1.89 ± 0.51 |
| Hβ Broad | 41.55 +0.34−0.02 | 2583 ± 60 | 945 ± 29 | 62.10 ± 1.09 |
| [O III] 5007 | 41.12 ± 0.02 | 258 ± 63 | 202 ± 29 | 24.36 ± 0.64 |
| He I Narrow | 39.50 ± 0.24 | 228 ± 63 | 95 ± 25 | 0.87 ± 0.37 |
| He I Broad | 41.12 ± 0.03 | 5148 ± 148 | 2186 ± 62 | 35.87 ± 1.62 |
| [O I] 6300 | 39.82 ± 0.11 | 228 ± 63 | 95 ± 25 | 2.15 ± 0.44 |
| Hα Narrow | 40.75 ± 0.02 | 228 ± 63 | 95 ± 25 | 20.27 ± 0.49 |
| Hα Broad | 42.09 ± 0.01 | 2434 ± 66 | 1136 ± 29 | 444.32 ± 2.90 |
| [N II] 6585 | 40.69 ± 0.02 | 228 ± 63 | 95 ± 25 | 17.90 ± 0.53 |
| [S II] 6718 | 40.10 ± 0.08 | 228 ± 63 | 95 ± 25 | 4.75 ± 0.68 |
| [S II] 6732 | 40.13 ± 0.08 | 228 ± 63 | 95 ± 25 | 5.18 ± 0.55 |
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 | 20.66 |
|---|---|
| Hβ Broad SNR | 8.89 |
| Hγ Broad SNR | 4.64 |
| AGN frac | 0.70 |
| Host frac | 0.30 |
| log L5100,Host | 43.05 |
| 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.