LEDA 90201
Observation
| Spectrum ID | 166757956_sp1 |
|---|---|
| Alt name | g1515297-142932 |
| z | 0.0244 |
| RA, Dec | 228.8737, -14.4922 |
| MJD | 59347.65 |
| SNR/Å B/R | 11.6/25.7 |
| Obs Airmass | 1.15 |
| SMSS ID | 166757956 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.4 ± 0.0 |
| 2MASS Kext | 11.0 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.113 |
| Power law αν | 0.02 ± 0.16 |
| log L5100,AGN | 42.86 ± 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 | 39.95 ± 0.07 | 242 ± 63 | 138 ± 25 | 4.56 ± 0.45 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 38.98 ± 0.39 | 227 ± 62 | 94 ± 25 | 0.50 ± 0.34 |
| He II Narrow | 39.23 ± 0.24 | 227 ± 62 | 94 ± 25 | 1.01 ± 0.32 |
| He II Broad | 40.17 ± 0.17 | 6764 ± 63 | 2872 ± 25 | 8.88 ± 1.77 |
| Hβ Narrow | 40.49 ± 0.02 | 242 ± 63 | 138 ± 25 | 19.75 ± 0.42 |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 40.71 ± 0.01 | 242 ± 63 | 138 ± 25 | 35.27 ± 0.46 |
| He I Narrow | 38.76 ± 0.38 | 227 ± 62 | 94 ± 25 | 0.54 ± 0.25 |
| He I Broad | 39.75 ± 0.10 | 1178 ± 62 | 500 ± 25 | 5.31 ± 0.60 |
| [O I] 6300 | 39.68 ± 0.04 | 227 ± 62 | 94 ± 25 | 5.22 ± 0.31 |
| Hα Narrow | 41.26 ± 0.01 | 227 ± 62 | 94 ± 25 | 178.27 ± 0.42 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 40.99 ± 0.01 | 227 ± 62 | 94 ± 25 | 96.98 ± 0.38 |
| [S II] 6718 | 40.39 ± 0.01 | 227 ± 62 | 94 ± 25 | 30.53 ± 0.43 |
| [S II] 6732 | 40.33 ± 0.01 | 227 ± 62 | 94 ± 25 | 26.27 ± 0.40 |
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 | 0.44 |
| Host frac | 0.56 |
| log L5100,Host | 42.97 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 1.0/0 |
|---|---|
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.