LEDA 515465
Observation
| Spectrum ID | 490417008_sp1 |
|---|---|
| Alt name | g2346296-462404 |
| z | 0.0705 |
| RA, Dec | 356.6231, -46.4010 |
| MJD | 60223.53 |
| SNR/Å B/R | 11.7/21.4 |
| Obs Airmass | 1.04 |
| SMSS ID | 490417008 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.9 ± 0.0 |
| 2MASS Kext | nan ± nan |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.009 |
| Power law αν | -1.92 ± 0.09 |
| log L5100,AGN | 42.77 ± 0.09 |
| log HβBr/[O III] | -1.53 ± 0.56 |
| log ML5100/M☉ | 6.52 ± 0.05 |
| log MHα/M☉ | 7.10 ± 0.03 |
| log MHβ/M☉ | 6.09 ± 0.27 |
| log M[O III]/M☉ | 6.94 ± 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 | 40.23 ± 0.05 | 297 ± 62 | 162 ± 25 | 14.58 ± 1.10 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.89 ± 0.09 | 276 ± 62 | 116 ± 25 | 6.66 ± 0.82 |
| He II Narrow | 39.92 ± 0.09 | 276 ± 62 | 116 ± 25 | 7.11 ± 0.71 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.50 ± 0.03 | 297 ± 62 | 162 ± 25 | 27.70 ± 1.04 |
| Hβ Broad | 40.05 +0.95−0.16 | 1178 ± 25 | 421 ± 25 | 9.60 ± 1.53 |
| [O III] 5007 | 41.58 ± 0.01 | 297 ± 62 | 162 ± 25 | 328.33 ± 1.29 |
| He I Narrow | 39.29 ± 0.23 | 276 ± 62 | 116 ± 25 | 1.72 ± 0.58 |
| He I Broad | 40.09 ± 0.14 | 3304 ± 64 | 1403 ± 26 | 10.89 ± 1.97 |
| [O I] 6300 | 39.98 ± 0.04 | 276 ± 62 | 116 ± 25 | 8.44 ± 0.51 |
| Hα Narrow | 40.96 ± 0.01 | 276 ± 62 | 116 ± 25 | 81.04 ± 0.64 |
| Hα Broad | 41.52 ± 0.01 | 2771 ± 86 | 1913 ± 31 | 292.69 ± 3.22 |
| [N II] 6585 | 40.44 ± 0.02 | 276 ± 62 | 116 ± 25 | 24.13 ± 0.68 |
| [S II] 6718 | 40.32 ± 0.02 | 276 ± 62 | 116 ± 25 | 18.65 ± 0.56 |
| [S II] 6732 | 40.27 ± 0.02 | 276 ± 62 | 116 ± 25 | 16.56 ± 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 | 8.39 |
|---|---|
| Hβ Broad SNR | 1.26 |
| Hγ Broad SNR | 0.40 |
| AGN frac | 0.24 |
| Host frac | 0.76 |
| log L5100,Host | 43.28 |
| 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 | 2 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.