LEDA 161868
Observation
| Spectrum ID | 1584630485_sp2 |
|---|---|
| Alt name | g2001061-461353 |
| z | 0.0712 |
| RA, Dec | 300.2753, -46.2316 |
| MJD | 60165.54 |
| SNR/Å B/R | 16.5/25.0 |
| Obs Airmass | 1.03 |
| SMSS ID | 1584630485 |
| Closest SMSS | 2.88'', 2685634828 |
| SMSS Mean r6"ap | 16.3 ± 0.0 |
| 2MASS Kext | 12.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.044 |
| Power law αν | -1.22 ± 0.14 |
| log L5100,AGN | 43.05 ± 0.03 |
| log HβBr/[O III] | 0.37 ± 0.04 |
| log ML5100/M☉ | 8.00 ± 0.03 |
| log MHα/M☉ | 7.48 ± 0.02 |
| log MHβ/M☉ | 7.95 ± 0.04 |
| log M[O III]/M☉ | 7.91 ± 0.04 |
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 | 39.91 ± 0.24 | 428 ± 64 | 414 ± 37 | 3.23 ± 1.15 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.61 ± 0.26 | 378 ± 63 | 160 ± 25 | 1.65 ± 0.60 |
| He II Narrow | — | — | — | — |
| He II Broad | 39.50 ± 0.43 | 1226 ± 66 | 520 ± 26 | 1.35 ± 1.05 |
| Hβ Narrow | 40.55 ± 0.05 | 428 ± 64 | 415 ± 37 | 15.68 ± 1.17 |
| Hβ Broad | 41.15 ± 0.03 | 5662 ± 137 | 1873 ± 25 | 62.01 ± 2.86 |
| [O III] 5007 | 40.77 ± 0.03 | 428 ± 64 | 415 ± 37 | 26.73 ± 2.12 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.68 ± 0.08 | 7617 ± 65 | 3235 ± 26 | 24.60 ± 2.49 |
| [O I] 6300 | 39.78 ± 0.12 | 378 ± 63 | 160 ± 25 | 3.30 ± 0.57 |
| Hα Narrow | 40.90 ± 0.02 | 378 ± 63 | 160 ± 25 | 44.73 ± 0.75 |
| Hα Broad | 41.84 ± 0.01 | 3453 ± 77 | 2193 ± 46 | 386.94 ± 3.94 |
| [N II] 6585 | 40.67 ± 0.02 | 378 ± 63 | 160 ± 25 | 26.15 ± 0.66 |
| [S II] 6718 | 40.43 ± 0.03 | 378 ± 63 | 160 ± 25 | 15.14 ± 0.68 |
| [S II] 6732 | 40.27 ± 0.04 | 378 ± 63 | 160 ± 25 | 10.75 ± 0.66 |
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 | 10.81 |
|---|---|
| Hβ Broad SNR | 2.50 |
| Hγ Broad SNR | 0.63 |
| AGN frac | 0.25 |
| Host frac | 0.75 |
| log L5100,Host | 43.53 |
| Fe II/Hβ | 0.29 |
| Fe II/[O III] | 0.68 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 1 |
balmer_snr | 2 |
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.