LEDA 84044
Observation
| Spectrum ID | 105858687_sp1 |
|---|---|
| Alt name | NPM 1G-14.0512 |
| z | 0.0418 |
| RA, Dec | 205.3037, -14.6445 |
| MJD | 61067.74 |
| SNR/Å B/R | 4.3/6.0 |
| Obs Airmass | 1.12 |
| SMSS ID | 105858687 |
| Closest SMSS | 3.61'', 2172306113 |
| SMSS Mean r6"ap | 14.9 ± 0.1 |
| 2MASS Kext | 10.6 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | PGC |
| MW E(B−V) | 0.053 |
| Power law αν | 0.08 ± 0.24 |
| log L5100,AGN | 43.95 ± 0.03 |
| log HβBr/[O III] | 0.29 ± 0.06 |
| log ML5100/M☉ | 7.21 ± 0.04 |
| log MHα/M☉ | 7.42 ± 0.05 |
| log MHβ/M☉ | 7.21 ± 0.04 |
| log M[O III]/M☉ | 7.24 ± 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 | 40.78 ± 0.31 | — | 187 ± 26 | 2.23 ± 0.68 |
| Hγ Broad | 41.71 ± 0.07 | 1354 ± 127 | 489 ± 42 | 20.18 ± 1.44 |
| [O III] 4364 | 40.61 ± 0.29 | 136 ± 93 | 55 ± 39 | 1.25 ± 0.44 |
| He II Narrow | 40.40 ± 0.34 | 136 ± 93 | 55 ± 39 | 0.88 ± 0.38 |
| He II Broad | 41.07 ± 0.20 | 1196 ± 109 | 508 ± 45 | 5.22 ± 1.21 |
| Hβ Narrow | 40.64 ± 0.32 | — | 187 ± 26 | 2.06 ± 0.79 |
| Hβ Broad | 42.12 ± 0.03 | 1458 ± 56 | 524 ± 28 | 67.96 ± 1.54 |
| [O III] 5007 | 41.82 ± 0.05 | — | 187 ± 26 | 34.19 ± 0.87 |
| He I Narrow | 40.07 ± 0.39 | 136 ± 93 | 55 ± 39 | 0.66 ± 0.33 |
| He I Broad | 41.15 ± 0.10 | 1184 ± 63 | 502 ± 25 | 10.66 ± 1.12 |
| [O I] 6300 | 40.26 ± 0.27 | 136 ± 93 | 55 ± 39 | 1.13 ± 0.45 |
| Hα Narrow | 41.02 ± 0.30 | 136 ± 93 | 55 ± 39 | 7.95 ± 1.07 |
| Hα Broad | 42.67 ± 0.01 | 1784 ± 93 | 657 ± 44 | 424.50 ± 2.63 |
| [N II] 6585 | 40.62 ± 0.22 | 136 ± 93 | 55 ± 39 | 3.06 ± 0.79 |
| [S II] 6718 | 40.56 ± 0.23 | 136 ± 93 | 55 ± 39 | 2.94 ± 0.49 |
| [S II] 6732 | 40.44 ± 0.23 | 136 ± 93 | 55 ± 39 | 2.17 ± 0.49 |
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 | 19.68 |
|---|---|
| Hβ Broad SNR | 9.32 |
| Hγ Broad SNR | 4.35 |
| AGN frac | 0.86 |
| Host frac | 0.13 |
| log L5100,Host | 43.15 |
| Fe II/Hβ | 0.52 |
| Fe II/[O III] | 1.10 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
hb_width | 0 |
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.