LEDA 149256
Observation
| Spectrum ID | 464729086_sp1 |
|---|---|
| Alt name | g0656543-631536 |
| z | 0.0350 |
| RA, Dec | 104.2260, -63.2598 |
| MJD | 60287.65 |
| SNR/Å B/R | 7.0/18.7 |
| Obs Airmass | 1.18 |
| SMSS ID | 464729086 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.2 ± 0.0 |
| 2MASS Kext | 12.0 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.082 |
| Power law αν | -1.82 ± 0.15 |
| log L5100,AGN | 42.15 ± 0.08 |
| log HβBr/[O III] | 0.19 ± 0.11 |
| log ML5100/M☉ | 6.26 ± 0.05 |
| log MHα/M☉ | 6.27 ± 0.05 |
| log MHβ/M☉ | 6.09 ± 0.08 |
| log M[O III]/M☉ | 6.09 ± 0.09 |
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 | 39.06 ± 0.41 | 320 ± 75 | 298 ± 40 | 3.95 ± 3.58 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 38.76 ± 0.41 | 257 ± 63 | 108 ± 25 | 2.06 ± 1.92 |
| He II Narrow | 38.70 ± 0.44 | 257 ± 63 | 108 ± 25 | 1.82 ± 1.50 |
| He II Broad | 39.86 ± 0.20 | 4297 ± 63 | 1824 ± 25 | 25.92 ± 6.36 |
| Hβ Narrow | 38.86 ± 0.49 | 320 ± 75 | 298 ± 40 | 2.61 ± 2.47 |
| Hβ Broad | 40.01 ± 0.07 | 1195 ± 26 | 430 ± 25 | 35.58 ± 3.08 |
| [O III] 5007 | 39.82 ± 0.08 | 320 ± 75 | 298 ± 40 | 24.38 ± 2.58 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.00 ± 0.07 | 3145 ± 63 | 1335 ± 25 | 37.35 ± 3.66 |
| [O I] 6300 | 38.97 ± 0.19 | 257 ± 63 | 108 ± 25 | 3.58 ± 0.94 |
| Hα Narrow | 40.06 ± 0.02 | 257 ± 63 | 108 ± 25 | 43.87 ± 1.11 |
| Hα Broad | 41.02 ± 0.01 | 1520 ± 64 | 970 ± 30 | 400.94 ± 5.35 |
| [N II] 6585 | 39.92 ± 0.03 | 257 ± 63 | 108 ± 25 | 32.01 ± 1.10 |
| [S II] 6718 | 39.36 ± 0.08 | 257 ± 63 | 108 ± 25 | 8.83 ± 1.09 |
| [S II] 6732 | 39.52 ± 0.06 | 257 ± 63 | 108 ± 25 | 12.85 ± 1.02 |
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 | 10.22 |
|---|---|
| Hβ Broad SNR | 2.25 |
| Hγ Broad SNR | 0.41 |
| AGN frac | 0.19 |
| Host frac | 0.81 |
| log L5100,Host | 42.77 |
| Fe II/Hβ | 1.19 |
| Fe II/[O III] | 1.75 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
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.