LEDA 130627
Observation
| Spectrum ID | 488331919_sp1 |
|---|---|
| Alt name | g2129360-431455 |
| z | 0.0181 |
| RA, Dec | 322.3999, -43.2486 |
| MJD | 60167.58 |
| SNR/Å B/R | 15.7/29.8 |
| Obs Airmass | 1.02 |
| SMSS ID | 488331919 |
| Closest SMSS | 4.92'', 2699598415 |
| SMSS Mean r6"ap | 16.4 ± 0.1 |
| 2MASS Kext | 12.3 ± 0.1 |
AGN Properties
| Spectrum Type | SF |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.029 |
| Power law αν | -1.78 ± 0.03 |
| log L5100,AGN | 42.02 ± 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 | 38.62 ± 0.11 | 172 ± 62 | 73 ± 25 | 1.95 ± 0.30 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 37.99 ± 0.37 | 181 ± 62 | 72 ± 25 | 0.46 ± 0.27 |
| He II Broad | 38.58 ± 0.31 | 1272 ± 62 | 540 ± 25 | 1.78 ± 0.65 |
| Hβ Narrow | 39.36 ± 0.02 | 172 ± 62 | 73 ± 25 | 10.88 ± 0.26 |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 39.25 ± 0.02 | 172 ± 62 | 73 ± 25 | 8.56 ± 0.27 |
| He I Narrow | — | — | — | — |
| He I Broad | 38.57 ± 0.17 | 1180 ± 62 | 501 ± 25 | 1.84 ± 1.15 |
| [O I] 6300 | 38.56 ± 0.07 | 181 ± 62 | 72 ± 25 | 1.85 ± 0.16 |
| Hα Narrow | 40.02 ± 0.01 | 181 ± 62 | 72 ± 25 | 53.96 ± 0.20 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 39.49 ± 0.01 | 181 ± 62 | 72 ± 25 | 15.70 ± 0.17 |
| [S II] 6718 | 39.39 ± 0.01 | 181 ± 62 | 72 ± 25 | 12.50 ± 0.19 |
| [S II] 6732 | 39.24 ± 0.01 | 181 ± 62 | 72 ± 25 | 8.94 ± 0.16 |
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 | 0.43 |
| Host frac | 0.57 |
| log L5100,Host | 42.15 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
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.