LEDA 198501
Observation
| Spectrum ID | 1443734_sp1 |
|---|---|
| Alt name | g2202123-274348 |
| z | 0.0806 |
| RA, Dec | 330.5513, -27.7302 |
| MJD | 60495.8 |
| SNR/Å B/R | 8.0/14.6 |
| Obs Airmass | 1.12 |
| SMSS ID | 1443734 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.6 ± 0.1 |
| 2MASS Kext | 12.6 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.025 |
| Power law αν | 0.43 ± 0.07 |
| log L5100,AGN | 43.26 ± 0.02 |
| log HβBr/[O III] | <0.09 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 7.19 ± 0.03 |
| 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 | 39.79 ± 0.36 | 245 ± 64 | 205 ± 30 | 1.15 ± 0.79 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.73 ± 0.30 | 203 ± 63 | 86 ± 25 | 1.03 ± 0.48 |
| He II Narrow | 39.53 ± 0.38 | 203 ± 63 | 86 ± 25 | 0.78 ± 0.49 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.57 ± 0.07 | 245 ± 64 | 205 ± 30 | 9.26 ± 0.94 |
| Hβ Broad | <40.83 | — | — | — |
| [O III] 5007 | 40.74 ± 0.05 | 245 ± 64 | 205 ± 30 | 14.63 ± 1.08 |
| He I Narrow | 39.15 ± 0.45 | 203 ± 63 | 86 ± 25 | 0.56 ± 0.45 |
| He I Broad | 40.43 ± 0.10 | 1650 ± 64 | 701 ± 26 | 10.67 ± 1.40 |
| [O I] 6300 | 39.31 ± 0.33 | 203 ± 63 | 86 ± 25 | 0.95 ± 0.50 |
| Hα Narrow | 41.00 ± 0.01 | 203 ± 63 | 86 ± 25 | 50.99 ± 0.65 |
| Hα Broad | 41.84 ± 0.01 | 2444 ± 77 | 2066 ± 31 | 361.87 ± 4.48 |
| [N II] 6585 | 40.70 ± 0.02 | 203 ± 63 | 86 ± 25 | 25.80 ± 0.64 |
| [S II] 6718 | 40.25 ± 0.05 | 203 ± 63 | 86 ± 25 | 9.75 ± 0.80 |
| [S II] 6732 | — | — | — | — |
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 | 6.84 |
|---|---|
| Hβ Broad SNR | 0.17 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.48 |
| Host frac | 0.52 |
| log L5100,Host | 43.30 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
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.