LEDA 356552
Observation
| Spectrum ID | 486659665_sp1 |
|---|---|
| Alt name | g2222240-611648 |
| z | 0.0444 |
| RA, Dec | 335.5996, -61.2798 |
| MJD | 60914.52 |
| SNR/Å B/R | 10.2/22.2 |
| Obs Airmass | 1.21 |
| SMSS ID | 486659665 |
| Closest SMSS | 11.26'', 2695856396 |
| SMSS Mean r6"ap | 16.5 ± 0.0 |
| 2MASS Kext | 12.2 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.029 |
| Power law αν | 0.49 ± 0.01 |
| log L5100,AGN | 42.55 ± 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 | 39.08 ± 0.43 | — | 305 ± 25 | 1.15 ± 0.90 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.63 ± 0.14 | — | 305 ± 25 | 5.40 ± 0.96 |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 39.89 ± 0.07 | — | 305 ± 25 | 10.63 ± 1.01 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.43 ± 0.09 | 11227 ± 62 | 4768 ± 25 | 54.93 ± 8.47 |
| [O I] 6300 | 39.23 ± 0.17 | 284 ± 62 | 120 ± 25 | 4.08 ± 0.98 |
| Hα Narrow | 40.60 ± 0.01 | 284 ± 62 | 120 ± 25 | 105.73 ± 1.35 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 40.28 ± 0.02 | 284 ± 62 | 120 ± 25 | 51.69 ± 1.48 |
| [S II] 6718 | 39.95 ± 0.03 | 284 ± 62 | 120 ± 25 | 25.05 ± 1.30 |
| [S II] 6732 | 39.64 ± 0.07 | 284 ± 62 | 120 ± 25 | 12.37 ± 1.14 |
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 | 0.80 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.23 |
| Host frac | 0.77 |
| log L5100,Host | 43.07 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
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.