LEDA 994749
Observation
| Spectrum ID | 5035485_sp1 |
|---|---|
| Alt name | g2143549-090811 |
| z | 0.0552 |
| RA, Dec | 325.9787, -9.1363 |
| MJD | 60524.59 |
| SNR/Å B/R | 9.6/20.5 |
| Obs Airmass | 1.11 |
| SMSS ID | 5035485 |
| Closest SMSS | 8.50'', 5035486 |
| SMSS Mean r6"ap | 16.3 ± 0.1 |
| 2MASS Kext | 12.6 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.039 |
| Power law αν | -1.93 ± 0.09 |
| log L5100,AGN | 42.61 ± 0.12 |
| log HβBr/[O III] | -0.76 ± 0.05 |
| log ML5100/M☉ | 6.74 ± 0.14 |
| log MHα/M☉ | 7.32 ± 0.07 |
| log MHβ/M☉ | 6.84 ± 0.13 |
| log M[O III]/M☉ | 7.35 ± 0.13 |
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 | 40.41 ± 0.07 | 452 ± 62 | 192 ± 25 | 31.54 ± 2.68 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 40.15 ± 0.10 | 453 ± 62 | 191 ± 25 | 17.38 ± 2.33 |
| He II Narrow | 40.10 ± 0.10 | 453 ± 62 | 191 ± 25 | 15.84 ± 2.58 |
| He II Broad | 40.33 ± 0.20 | 5049 ± 65 | 2144 ± 26 | 26.97 ± 6.49 |
| Hβ Narrow | 40.73 ± 0.04 | 452 ± 62 | 192 ± 25 | 66.43 ± 2.29 |
| Hβ Broad | 41.06 ± 0.05 | 1643 ± 232 | 3052 ± 135 | 143.49 ± 9.36 |
| [O III] 5007 | 41.82 ± 0.01 | 452 ± 62 | 192 ± 25 | 829.84 ± 2.93 |
| He I Narrow | 39.66 ± 0.16 | 453 ± 62 | 191 ± 25 | 5.83 ± 1.11 |
| He I Broad | 39.21 ± 0.50 | 1239 ± 64 | 526 ± 26 | 2.06 ± 1.76 |
| [O I] 6300 | 40.37 ± 0.03 | 453 ± 62 | 191 ± 25 | 29.85 ± 1.11 |
| Hα Narrow | 41.27 ± 0.01 | 453 ± 62 | 191 ± 25 | 240.00 ± 1.68 |
| Hα Broad | 41.48 ± 0.01 | 3672 ± 270 | 1723 ± 34 | 389.50 ± 4.43 |
| [N II] 6585 | 41.16 ± 0.01 | 453 ± 62 | 191 ± 25 | 182.80 ± 1.52 |
| [S II] 6718 | 40.74 ± 0.01 | 453 ± 62 | 191 ± 25 | 69.58 ± 1.24 |
| [S II] 6732 | 40.67 ± 0.02 | 453 ± 62 | 191 ± 25 | 59.30 ± 1.22 |
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 | 5.35 |
|---|---|
| Hβ Broad SNR | 2.70 |
| Hγ Broad SNR | 0.54 |
| AGN frac | 0.16 |
| Host frac | 0.84 |
| log L5100,Host | 43.34 |
| Fe II/Hβ | 0.37 |
| Fe II/[O III] | 0.06 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 1 |
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.