LEDA 1041901
Observation
| Spectrum ID | 5490536_sp1 |
|---|---|
| Alt name | g2202067-053946 |
| z | 0.0273 |
| RA, Dec | 330.5280, -5.6626 |
| MJD | 60093.76 |
| SNR/Å B/R | 19.1/33.9 |
| Obs Airmass | 1.19 |
| SMSS ID | 5490536 |
| Closest SMSS | 8.92'', 1008155266 |
| SMSS Mean r6"ap | 15.9 ± 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) | 0.041 |
| Power law αν | -1.59 ± 0.20 |
| log L5100,AGN | 42.62 ± 0.02 |
| log HβBr/[O III] | -0.10 ± 0.03 |
| log ML5100/M☉ | 6.89 ± 0.05 |
| log MHα/M☉ | 6.37 ± 0.05 |
| log MHβ/M☉ | 6.69 ± 0.07 |
| log M[O III]/M☉ | 6.84 ± 0.06 |
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 | 38.84 ± 0.31 | 273 ± 63 | 113 ± 25 | 0.79 ± 0.35 |
| Hγ Broad | 40.03 ± 0.07 | 2035 ± 182 | 784 ± 43 | 12.21 ± 1.09 |
| [O III] 4364 | 39.28 ± 0.11 | 235 ± 63 | 99 ± 25 | 2.19 ± 0.33 |
| He II Narrow | 38.60 ± 0.36 | 235 ± 63 | 99 ± 25 | 0.48 ± 0.28 |
| He II Broad | 39.01 ± 0.36 | 1311 ± 71 | 557 ± 29 | 1.21 ± 0.66 |
| Hβ Narrow | 39.50 ± 0.07 | 273 ± 63 | 113 ± 25 | 3.76 ± 0.32 |
| Hβ Broad | 40.38 ± 0.03 | 1959 ± 83 | 747 ± 46 | 28.84 ± 0.94 |
| [O III] 5007 | 40.48 ± 0.01 | 273 ± 63 | 113 ± 25 | 36.94 ± 0.33 |
| He I Narrow | 38.21 ± 0.45 | 235 ± 63 | 99 ± 25 | 0.21 ± 0.20 |
| He I Broad | 39.83 ± 0.06 | 2600 ± 84 | 1104 ± 35 | 8.80 ± 0.77 |
| [O I] 6300 | 38.64 ± 0.26 | 235 ± 63 | 99 ± 25 | 0.59 ± 0.23 |
| Hα Narrow | 39.99 ± 0.02 | 235 ± 63 | 99 ± 25 | 13.38 ± 0.27 |
| Hα Broad | 41.07 ± 0.01 | 1643 ± 64 | 707 ± 25 | 160.53 ± 0.99 |
| [N II] 6585 | 39.86 ± 0.02 | 235 ± 63 | 99 ± 25 | 9.95 ± 0.25 |
| [S II] 6718 | 39.52 ± 0.04 | 235 ± 63 | 99 ± 25 | 4.56 ± 0.27 |
| [S II] 6732 | 39.34 ± 0.06 | 235 ± 63 | 99 ± 25 | 3.02 ± 0.25 |
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 | 20.99 |
|---|---|
| Hβ Broad SNR | 5.22 |
| Hγ Broad SNR | 2.59 |
| AGN frac | 0.35 |
| Host frac | 0.65 |
| log L5100,Host | 42.88 |
| Fe II/Hβ | 0.95 |
| Fe II/[O III] | 0.75 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
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.