LEDA 991676
Observation
| Spectrum ID | 109988713_sp1 |
|---|---|
| Alt name | g1423502-092318 |
| z | 0.0682 |
| RA, Dec | 215.9594, -9.3882 |
| MJD | 60018.69 |
| SNR/Å B/R | 7.7/14.9 |
| Obs Airmass | 1.08 |
| SMSS ID | 109988713 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 17.0 ± 0.1 |
| 2MASS Kext | 13.6 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.053 |
| Power law αν | 0.06 ± 0.21 |
| log L5100,AGN | 43.22 ± 0.03 |
| log HβBr/[O III] | 0.16 ± 0.04 |
| log ML5100/M☉ | 7.19 ± 0.07 |
| log MHα/M☉ | 6.70 ± 0.04 |
| log MHβ/M☉ | 7.16 ± 0.07 |
| log M[O III]/M☉ | 7.23 ± 0.07 |
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 | 40.18 ± 0.12 | 266 ± 63 | 310 ± 32 | 3.37 ± 0.97 |
| Hγ Broad | 40.71 ± 0.10 | 2486 ± 311 | 914 ± 87 | 10.77 ± 1.40 |
| [O III] 4364 | 40.03 ± 0.13 | 256 ± 63 | 108 ± 25 | 2.39 ± 0.43 |
| He II Narrow | 39.60 ± 0.26 | 256 ± 63 | 108 ± 25 | 1.03 ± 0.42 |
| He II Broad | 40.85 ± 0.07 | 3879 ± 225 | 1647 ± 95 | 18.51 ± 1.72 |
| Hβ Narrow | 40.58 ± 0.05 | 266 ± 63 | 310 ± 32 | 10.69 ± 1.02 |
| Hβ Broad | 41.35 ± 0.03 | 2044 ± 156 | 1707 ± 114 | 62.67 ± 2.54 |
| [O III] 5007 | 41.19 ± 0.02 | 266 ± 63 | 310 ± 32 | 46.27 ± 1.13 |
| He I Narrow | 39.20 ± 0.31 | 256 ± 63 | 108 ± 25 | 0.65 ± 0.30 |
| He I Broad | 40.39 ± 0.07 | 2143 ± 169 | 910 ± 71 | 10.30 ± 0.98 |
| [O I] 6300 | 39.63 ± 0.11 | 256 ± 63 | 108 ± 25 | 2.02 ± 0.34 |
| Hα Narrow | 41.02 ± 0.01 | 256 ± 63 | 108 ± 25 | 54.47 ± 0.50 |
| Hα Broad | 41.75 ± 0.01 | 1496 ± 65 | 720 ± 25 | 292.05 ± 1.52 |
| [N II] 6585 | 40.56 ± 0.02 | 256 ± 63 | 108 ± 25 | 18.86 ± 0.49 |
| [S II] 6718 | 40.30 ± 0.03 | 256 ± 63 | 108 ± 25 | 10.74 ± 0.53 |
| [S II] 6732 | 40.10 ± 0.05 | 256 ± 63 | 108 ± 25 | 6.92 ± 0.54 |
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 | 17.92 |
|---|---|
| Hβ Broad SNR | 5.53 |
| Hγ Broad SNR | 1.77 |
| AGN frac | 0.63 |
| Host frac | 0.37 |
| log L5100,Host | 42.99 |
| Fe II/Hβ | 0.39 |
| Fe II/[O III] | 0.56 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 1 |
hb_width | 2 |
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.