LEDA 16005
Observation
| Spectrum ID | 25126932_sp1 |
|---|---|
| Alt name | g0447207-050814 |
| z | 0.0447 |
| RA, Dec | 71.8363, -5.1372 |
| MJD | 60590.71 |
| SNR/Å B/R | 17.6/31.8 |
| Obs Airmass | 1.13 |
| SMSS ID | 25126932 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.2 ± 0.0 |
| 2MASS Kext | 11.4 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.045 |
| Power law αν | -1.78 ± 0.02 |
| log L5100,AGN | 43.54 ± 0.01 |
| log HβBr/[O III] | 0.22 ± 0.29 |
| log ML5100/M☉ | 7.27 ± 0.03 |
| log MHα/M☉ | 7.00 ± 0.03 |
| log MHβ/M☉ | 7.06 ± 0.15 |
| log M[O III]/M☉ | 7.09 ± 0.04 |
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 | 40.53 ± 0.05 | 312 ± 63 | 264 ± 27 | 4.81 ± 0.34 |
| Hγ Broad | 40.82 ± 0.06 | 2828 ± 124 | 1011 ± 43 | 9.21 ± 0.64 |
| [O III] 4364 | 39.48 ± 0.28 | 246 ± 62 | 103 ± 25 | 0.43 ± 0.18 |
| He II Narrow | 39.39 ± 0.28 | 246 ± 62 | 103 ± 25 | 0.35 ± 0.16 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 41.00 ± 0.02 | 312 ± 63 | 264 ± 27 | 14.54 ± 0.30 |
| Hβ Broad | 41.25 +0.55−0.02 | 1915 ± 53 | 679 ± 27 | 26.16 ± 0.45 |
| [O III] 5007 | 41.03 ± 0.01 | 312 ± 63 | 264 ± 27 | 15.66 ± 0.28 |
| He I Narrow | 39.92 ± 0.05 | 246 ± 62 | 103 ± 25 | 1.27 ± 0.10 |
| He I Broad | 41.08 ± 0.02 | 5739 ± 150 | 2437 ± 63 | 18.30 ± 0.48 |
| [O I] 6300 | 39.89 ± 0.05 | 246 ± 62 | 103 ± 25 | 1.21 ± 0.09 |
| Hα Narrow | 41.36 ± 0.01 | 246 ± 62 | 103 ± 25 | 35.56 ± 0.17 |
| Hα Broad | 42.06 ± 0.01 | 1701 ± 65 | 849 ± 25 | 179.33 ± 0.43 |
| [N II] 6585 | 41.08 ± 0.01 | 246 ± 62 | 103 ± 25 | 18.54 ± 0.16 |
| [S II] 6718 | 40.65 ± 0.01 | 246 ± 62 | 103 ± 25 | 7.05 ± 0.10 |
| [S II] 6732 | 40.60 ± 0.01 | 246 ± 62 | 103 ± 25 | 6.21 ± 0.10 |
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 | 43.34 |
|---|---|
| Hβ Broad SNR | 9.67 |
| Hγ Broad SNR | 2.72 |
| AGN frac | 0.84 |
| Host frac | 0.16 |
| log L5100,Host | 42.82 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 1 |
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.