LEDA 161868
Observation
| Spectrum ID | 1584630485_sp1 |
|---|---|
| Alt name | g2001061-461353 |
| z | 0.0712 |
| RA, Dec | 300.2753, -46.2316 |
| MJD | 60165.54 |
| SNR/Å B/R | 15.5/28.5 |
| 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 | -1.89 ± 0.10 |
| log L5100,AGN | 43.07 ± 0.03 |
| log HβBr/[O III] | 0.33 ± 0.05 |
| log ML5100/M☉ | 7.98 ± 0.06 |
| log MHα/M☉ | 7.45 ± 0.02 |
| log MHβ/M☉ | 7.90 ± 0.07 |
| log M[O III]/M☉ | 7.87 ± 0.07 |
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 | 39.74 ± 0.32 | 437 ± 65 | 438 ± 35 | 2.31 ± 1.13 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.65 ± 0.23 | 373 ± 63 | 158 ± 25 | 1.90 ± 0.60 |
| He II Narrow | — | — | — | — |
| He II Broad | 40.20 ± 0.19 | 3557 ± 63 | 1510 ± 25 | 6.76 ± 1.74 |
| Hβ Narrow | 40.46 ± 0.08 | 437 ± 65 | 438 ± 35 | 12.36 ± 1.07 |
| Hβ Broad | 41.10 ± 0.04 | 5481 ± 330 | 2029 ± 31 | 53.10 ± 2.31 |
| [O III] 5007 | 40.76 ± 0.03 | 437 ± 65 | 438 ± 35 | 25.13 ± 1.24 |
| He I Narrow | — | — | — | — |
| He I Broad | 39.55 ± 0.33 | 1196 ± 63 | 508 ± 25 | 1.57 ± 0.72 |
| [O I] 6300 | 39.81 ± 0.09 | 373 ± 63 | 158 ± 25 | 2.85 ± 0.38 |
| Hα Narrow | 40.86 ± 0.01 | 373 ± 63 | 158 ± 25 | 32.17 ± 0.51 |
| Hα Broad | 41.78 ± 0.01 | 3454 ± 71 | 1973 ± 39 | 267.84 ± 2.27 |
| [N II] 6585 | 40.62 ± 0.02 | 373 ± 63 | 158 ± 25 | 18.63 ± 0.43 |
| [S II] 6718 | 40.37 ± 0.03 | 373 ± 63 | 158 ± 25 | 10.42 ± 0.40 |
| [S II] 6732 | 40.18 ± 0.04 | 373 ± 63 | 158 ± 25 | 6.84 ± 0.40 |
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 | 11.04 |
|---|---|
| Hβ Broad SNR | 2.49 |
| Hγ Broad SNR | 0.62 |
| AGN frac | 0.30 |
| Host frac | 0.70 |
| log L5100,Host | 43.45 |
| Fe II/Hβ | 0.17 |
| Fe II/[O III] | 0.37 |
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.