LEDA 846513
Observation
| Spectrum ID | 22653039_sp1 |
|---|---|
| Alt name | g0454341-200507 |
| z | 0.0756 |
| RA, Dec | 73.6421, -20.0853 |
| MJD | 60590.72 |
| SNR/Å B/R | 14.9/26.1 |
| Obs Airmass | 1.03 |
| SMSS ID | 22653039 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.3 ± 0.0 |
| 2MASS Kext | 12.3 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.044 |
| Power law αν | 0.36 ± 0.12 |
| log L5100,AGN | 43.36 ± 0.02 |
| log HβBr/[O III] | 0.22 ± 0.07 |
| log ML5100/M☉ | 7.68 ± 0.09 |
| log MHα/M☉ | 6.82 ± 0.04 |
| log MHβ/M☉ | 7.45 ± 0.10 |
| log M[O III]/M☉ | 7.47 ± 0.09 |
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 | 40.14 ± 0.18 | 310 ± 63 | 322 ± 41 | 2.11 ± 0.69 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.76 ± 0.26 | 291 ± 63 | 123 ± 25 | 0.90 ± 0.35 |
| He II Narrow | 39.42 ± 0.40 | 291 ± 63 | 123 ± 25 | 0.48 ± 0.39 |
| He II Broad | 41.04 ± 0.08 | 10040 ± 84 | 4263 ± 34 | 20.15 ± 2.21 |
| Hβ Narrow | 40.78 ± 0.05 | 310 ± 63 | 323 ± 41 | 12.11 ± 0.78 |
| Hβ Broad | 41.03 ± 0.06 | 3373 ± 331 | 1322 ± 47 | 20.75 ± 1.42 |
| [O III] 5007 | 40.81 ± 0.04 | 310 ± 63 | 323 ± 41 | 13.82 ± 0.85 |
| He I Narrow | 39.16 ± 0.42 | 291 ± 63 | 123 ± 25 | 0.45 ± 0.37 |
| He I Broad | 40.48 ± 0.10 | 2550 ± 78 | 1083 ± 32 | 9.42 ± 1.23 |
| [O I] 6300 | 39.48 ± 0.24 | 291 ± 63 | 123 ± 25 | 1.11 ± 0.39 |
| Hα Narrow | 41.37 ± 0.01 | 291 ± 63 | 123 ± 25 | 95.12 ± 0.58 |
| Hα Broad | 41.43 ± 0.02 | 2141 ± 85 | 915 ± 55 | 110.78 ± 2.03 |
| [N II] 6585 | 40.98 ± 0.01 | 291 ± 63 | 123 ± 25 | 39.56 ± 0.54 |
| [S II] 6718 | 40.40 ± 0.03 | 291 ± 63 | 123 ± 25 | 10.87 ± 0.54 |
| [S II] 6732 | 40.37 ± 0.05 | 291 ± 63 | 123 ± 25 | 10.07 ± 0.72 |
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 | 5.36 |
|---|---|
| Hβ Broad SNR | 1.97 |
| Hγ Broad SNR | 0.46 |
| AGN frac | 0.37 |
| Host frac | 0.63 |
| log L5100,Host | 43.60 |
| Fe II/Hβ | 2.48 |
| Fe II/[O III] | 3.98 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 0 |
balmer_width | 0 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.