LEDA 144731
Observation
| Spectrum ID | 504440955_sp1 |
|---|---|
| Alt name | g0218570-474960 |
| z | 0.0673 |
| RA, Dec | 34.7375, -47.8333 |
| MJD | 60197.72 |
| SNR/Å B/R | 12.9/25.6 |
| Obs Airmass | 1.04 |
| SMSS ID | 504440955 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.7 ± 0.1 |
| 2MASS Kext | 12.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.021 |
| Power law αν | 0.46 ± 0.04 |
| log L5100,AGN | 42.46 ± 0.04 |
| log HβBr/[O III] | <0.17 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 7.17 ± 0.06 |
| 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 | 39.22 ± 0.40 | 345 ± 62 | 146 ± 25 | 2.01 ± 1.47 |
| He II Narrow | 39.19 ± 0.40 | 345 ± 62 | 146 ± 25 | 2.21 ± 1.57 |
| He II Broad | 39.94 ± 0.30 | 2899 ± 62 | 1231 ± 25 | 12.51 ± 4.70 |
| Hβ Narrow | 39.95 ± 0.20 | 398 ± 70 | 464 ± 57 | 14.26 ± 3.47 |
| Hβ Broad | <40.49 | — | — | — |
| [O III] 5007 | 40.33 ± 0.08 | 398 ± 70 | 464 ± 57 | 35.81 ± 3.91 |
| He I Narrow | — | — | — | — |
| He I Broad | — | — | — | — |
| [O I] 6300 | 39.39 ± 0.22 | 345 ± 62 | 146 ± 25 | 7.40 ± 2.21 |
| Hα Narrow | 40.51 ± 0.02 | 345 ± 62 | 146 ± 25 | 105.89 ± 2.91 |
| Hα Broad | 40.85 ± 0.04 | 4797 ± 163 | 1807 ± 25 | 233.67 ± 11.46 |
| [N II] 6585 | 40.33 ± 0.03 | 345 ± 62 | 146 ± 25 | 71.35 ± 2.77 |
| [S II] 6718 | 39.97 ± 0.07 | 345 ± 62 | 146 ± 25 | 32.57 ± 3.11 |
| [S II] 6732 | 39.85 ± 0.09 | 345 ± 62 | 146 ± 25 | 24.94 ± 3.17 |
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 | 1.31 |
|---|---|
| Hβ Broad SNR | 0.54 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.09 |
| Host frac | 0.91 |
| log L5100,Host | 43.44 |
| Fe II/Hβ | — |
| Fe II/[O III] | 1.76 |
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.