LEDA 947757
Observation
| Spectrum ID | 25596022_sp1 |
|---|---|
| Alt name | g0518135-124635 |
| z | 0.0559 |
| RA, Dec | 79.5563, -12.7764 |
| MJD | 60262.64 |
| SNR/Å B/R | 6.4/13.1 |
| Obs Airmass | 1.06 |
| SMSS ID | 25596022 |
| Closest SMSS | 6.62'', 25596020 |
| SMSS Mean r6"ap | 16.6 ± 0.1 |
| 2MASS Kext | 12.0 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.114 |
| Power law αν | -0.58 ± 0.38 |
| log L5100,AGN | 42.82 ± 0.07 |
| log HβBr/[O III] | -0.47 ± 0.08 |
| log ML5100/M☉ | 6.81 ± 0.13 |
| log MHα/M☉ | 6.71 ± 0.04 |
| log MHβ/M☉ | 6.66 ± 0.14 |
| log M[O III]/M☉ | 7.01 ± 0.12 |
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 | 40.08 ± 0.21 | 580 ± 71 | 392 ± 26 | 7.46 ± 1.74 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.78 ± 0.19 | 357 ± 63 | 151 ± 25 | 3.71 ± 1.02 |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.56 ± 0.05 | 580 ± 71 | 392 ± 26 | 26.01 ± 1.60 |
| Hβ Broad | 40.70 ± 0.08 | 1610 ± 219 | 1129 ± 95 | 35.86 ± 3.02 |
| [O III] 5007 | 41.17 ± 0.01 | 580 ± 71 | 392 ± 26 | 111.98 ± 1.71 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.14 ± 0.13 | 3306 ± 65 | 1404 ± 26 | 12.94 ± 2.26 |
| [O I] 6300 | 40.06 ± 0.05 | 357 ± 63 | 151 ± 25 | 11.87 ± 0.75 |
| Hα Narrow | 40.70 ± 0.02 | 357 ± 63 | 151 ± 25 | 55.31 ± 1.09 |
| Hα Broad | 41.53 ± 0.01 | 1770 ± 74 | 727 ± 25 | 370.51 ± 2.47 |
| [N II] 6585 | 40.54 ± 0.02 | 357 ± 63 | 151 ± 25 | 38.95 ± 1.00 |
| [S II] 6718 | 40.47 ± 0.02 | 357 ± 63 | 151 ± 25 | 33.90 ± 0.88 |
| [S II] 6732 | 40.34 ± 0.03 | 357 ± 63 | 151 ± 25 | 25.02 ± 0.87 |
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 | 13.73 |
|---|---|
| Hβ Broad SNR | 2.37 |
| Hγ Broad SNR | 0.85 |
| AGN frac | 0.38 |
| Host frac | 0.62 |
| log L5100,Host | 43.03 |
| Fe II/Hβ | 0.70 |
| Fe II/[O III] | 0.23 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 1 |
balmer_width | 1 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.