LEDA 143321
Observation
| Spectrum ID | 503798907_sp1 |
|---|---|
| Alt name | g0011522-501148 |
| z | 0.0334 |
| RA, Dec | 2.9676, -50.1966 |
| MJD | 60164.7 |
| SNR/Å B/R | 12.0/25.1 |
| Obs Airmass | 1.06 |
| SMSS ID | 503798907 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.4 ± 0.0 |
| 2MASS Kext | 12.7 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.016 |
| Power law αν | 0.36 ± 0.17 |
| log L5100,AGN | 40.05 ± 0.63 |
| log HβBr/[O III] | <-0.55 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 5.84 ± 0.09 |
| 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 | 38.96 ± 0.34 | 430 ± 65 | 272 ± 27 | 276.29 ± 181.34 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | — | — | — | — |
| He II Broad | 40.07 ± 0.10 | 6392 ± 63 | 2714 ± 25 | 4241.13 ± 496.33 |
| Hβ Narrow | 39.54 ± 0.10 | 430 ± 65 | 272 ± 27 | 1347.00 ± 168.02 |
| Hβ Broad | <39.72 | — | — | — |
| [O III] 5007 | 40.27 ± 0.02 | 430 ± 65 | 272 ± 27 | 7887.50 ± 197.12 |
| He I Narrow | — | — | — | — |
| He I Broad | 39.15 ± 0.29 | 3129 ± 63 | 1328 ± 25 | 864.79 ± 327.56 |
| [O I] 6300 | 39.27 ± 0.07 | 344 ± 63 | 145 ± 25 | 1355.03 ± 132.45 |
| Hα Narrow | 39.88 ± 0.02 | 344 ± 63 | 145 ± 25 | 6164.38 ± 144.66 |
| Hα Broad | 39.99 ± 0.05 | 1898 ± 82 | 725 ± 26 | 7727.84 ± 348.44 |
| [N II] 6585 | 39.89 ± 0.02 | 344 ± 63 | 145 ± 25 | 6250.77 ± 146.82 |
| [S II] 6718 | 39.67 ± 0.03 | 344 ± 63 | 145 ± 25 | 4013.21 ± 162.57 |
| [S II] 6732 | 39.64 ± 0.03 | 344 ± 63 | 145 ± 25 | 3720.36 ± 165.02 |
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 | 1.71 |
|---|---|
| Hβ Broad SNR | 0.46 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.00 |
| Host frac | 1.00 |
| log L5100,Host | 42.86 |
| Fe II/Hβ | — |
| Fe II/[O III] | 1.24 |
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.