LEDA 3096689
Observation
| Spectrum ID | 1690440_sp1 |
|---|---|
| Alt name | g2234409-370644 |
| z | 0.0432 |
| RA, Dec | 338.6707, -37.1122 |
| MJD | 60114.8 |
| SNR/Å B/R | 9.8/16.2 |
| Obs Airmass | 1.01 |
| SMSS ID | 1690440 |
| Closest SMSS | 13.58'', 1690441 |
| SMSS Mean r6"ap | 16.4 ± 0.1 |
| 2MASS Kext | 12.7 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.011 |
| Power law αν | 0.06 ± 0.20 |
| log L5100,AGN | 42.84 ± 0.03 |
| log HβBr/[O III] | 0.08 ± 0.01 |
| log ML5100/M☉ | 7.28 ± 0.05 |
| log MHα/M☉ | 7.03 ± 0.03 |
| log MHβ/M☉ | 7.37 ± 0.05 |
| log M[O III]/M☉ | 7.47 ± 0.05 |
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 | 39.79 ± 0.09 | 268 ± 63 | 233 ± 26 | 3.27 ± 0.64 |
| Hγ Broad | 40.79 ± 0.03 | 3440 ± 200 | 1137 ± 43 | 32.71 ± 1.00 |
| [O III] 4364 | 39.51 ± 0.13 | 260 ± 63 | 109 ± 25 | 1.73 ± 0.31 |
| He II Narrow | 39.46 ± 0.12 | 260 ± 63 | 109 ± 25 | 1.80 ± 0.32 |
| He II Broad | 40.82 ± 0.03 | 5215 ± 202 | 2215 ± 85 | 41.31 ± 1.54 |
| Hβ Narrow | 40.18 ± 0.03 | 268 ± 63 | 233 ± 26 | 10.24 ± 0.69 |
| Hβ Broad | 41.26 ± 0.01 | 2731 ± 132 | 1349 ± 38 | 121.55 ± 1.48 |
| [O III] 5007 | 41.18 ± 0.01 | 268 ± 63 | 233 ± 26 | 106.73 ± 0.85 |
| He I Narrow | 39.21 ± 0.16 | 260 ± 63 | 109 ± 25 | 1.60 ± 0.33 |
| He I Broad | 40.46 ± 0.03 | 2802 ± 162 | 1189 ± 68 | 28.59 ± 1.13 |
| [O I] 6300 | 39.77 ± 0.04 | 260 ± 63 | 109 ± 25 | 6.69 ± 0.45 |
| Hα Narrow | 40.70 ± 0.01 | 260 ± 63 | 109 ± 25 | 62.23 ± 0.72 |
| Hα Broad | 41.80 ± 0.01 | 2106 ± 67 | 969 ± 25 | 785.95 ± 2.03 |
| [N II] 6585 | 40.02 ± 0.04 | 260 ± 63 | 109 ± 25 | 13.13 ± 0.73 |
| [S II] 6718 | 39.90 ± 0.03 | 260 ± 63 | 109 ± 25 | 10.41 ± 0.50 |
| [S II] 6732 | 39.93 ± 0.02 | 260 ± 63 | 109 ± 25 | 11.20 ± 0.46 |
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 | 41.62 |
|---|---|
| Hβ Broad SNR | 12.13 |
| Hγ Broad SNR | 4.66 |
| AGN frac | 0.63 |
| Host frac | 0.37 |
| log L5100,Host | 42.60 |
| Fe II/Hβ | 0.36 |
| Fe II/[O III] | 0.44 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
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.