LEDA 4078421
Observation
| Spectrum ID | 264339314_sp1 |
|---|---|
| Alt name | g1924554-162500 |
| z | 0.0397 |
| RA, Dec | 291.2307, -16.4168 |
| MJD | 60914.46 |
| SNR/Å B/R | 13.3/19.1 |
| Obs Airmass | 1.03 |
| SMSS ID | 264339314 |
| Closest SMSS | 7.18'', 264339316 |
| SMSS Mean r6"ap | 13.0 ± 0.0 |
| 2MASS Kext | 11.3 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.144 |
| Power law αν | -0.79 ± 0.02 |
| log L5100,AGN | 43.83 ± 0.01 |
| 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 | — | — | — | — |
| Hβ Narrow | 39.80 ± 0.29 | 340 ± 106 | 157 ± 26 | 0.44 ± 0.17 |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 39.92 ± 0.18 | 340 ± 106 | 158 ± 26 | 0.59 ± 0.18 |
| He I Narrow | 39.13 ± 0.46 | 221 ± 62 | 91 ± 25 | 0.12 ± 0.10 |
| He I Broad | 40.10 ± 0.26 | 2162 ± 62 | 918 ± 25 | 1.12 ± 0.32 |
| [O I] 6300 | — | — | — | — |
| Hα Narrow | 40.47 ± 0.03 | 221 ± 62 | 91 ± 25 | 3.04 ± 0.13 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 40.08 ± 0.08 | 221 ± 62 | 91 ± 25 | 1.24 ± 0.12 |
| [S II] 6718 | 39.42 ± 0.30 | 221 ± 62 | 91 ± 25 | 0.28 ± 0.12 |
| [S II] 6732 | 39.71 ± 0.16 | 221 ± 62 | 91 ± 25 | 0.54 ± 0.12 |
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 | 0.15 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 1.00 |
| Host frac | 0.00 |
| log L5100,Host | 40.65 |
| Fe II/Hβ | — |
| Fe II/[O III] | 7.88 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
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.