LEDA 204653
Observation
| Spectrum ID | 293538346_sp1 |
|---|---|
| Alt name | 6dF J193950.2-033252 |
| z | 0.0557 |
| RA, Dec | 294.9589, -3.5476 |
| MJD | 60905.45 |
| SNR/Å B/R | 16.0/29.4 |
| Obs Airmass | 1.18 |
| SMSS ID | 293538346 |
| Closest SMSS | 1.35'', 2408048502 |
| SMSS Mean r6"ap | 15.5 ± 0.0 |
| 2MASS Kext | 10.9 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.276 |
| Power law αν | -2.00 ± 0.01 |
| log L5100,AGN | 43.35 ± 0.03 |
| log HβBr/[O III] | — |
| log ML5100/M☉ | — |
| log MHα/M☉ | — |
| log MHβ/M☉ | — |
| log M[O III]/M☉ | — |
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 | — | — | — | — |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | — | — | — | — |
| He II Broad | 40.14 ± 0.31 | 1179 ± 62 | 500 ± 25 | 3.10 ± 1.65 |
| Hβ Narrow | 40.76 ± 0.09 | 386 ± 66 | 426 ± 51 | 13.25 ± 1.75 |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 40.77 ± 0.09 | 386 ± 66 | 426 ± 51 | 13.34 ± 1.75 |
| He I Narrow | — | — | — | — |
| He I Broad | — | — | — | — |
| [O I] 6300 | 39.65 ± 0.31 | 339 ± 62 | 143 ± 25 | 1.01 ± 0.55 |
| Hα Narrow | 41.26 ± 0.01 | 339 ± 62 | 143 ± 25 | 40.86 ± 0.70 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 40.93 ± 0.02 | 339 ± 62 | 143 ± 25 | 19.37 ± 0.66 |
| [S II] 6718 | 40.47 ± 0.06 | 339 ± 62 | 143 ± 25 | 6.67 ± 0.62 |
| [S II] 6732 | 40.50 ± 0.05 | 339 ± 62 | 143 ± 25 | 7.13 ± 0.62 |
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 | 0.00 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.17 |
| Host frac | 0.83 |
| log L5100,Host | 44.04 |
| Fe II/Hβ | — |
| Fe II/[O III] | 2.64 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 2 |
balmer_snr | 2 |
hb_width | 2 |
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.