LEDA 891997
Observation
| Spectrum ID | 168244857_sp1 |
|---|---|
| Alt name | g1552438-165341 |
| z | 0.0246 |
| RA, Dec | 238.1824, -16.8947 |
| MJD | 60904.39 |
| SNR/Å B/R | 10.7/20.0 |
| Obs Airmass | 1.07 |
| SMSS ID | 168244857 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.1 ± 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) | 0.147 |
| Power law αν | -1.65 ± 0.05 |
| log L5100,AGN | 42.57 ± 0.02 |
| log HβBr/[O III] | -0.36 ± 0.29 |
| log ML5100/M☉ | 7.00 ± 0.03 |
| log MHα/M☉ | 5.94 ± 0.07 |
| log MHβ/M☉ | 6.62 ± 0.16 |
| log M[O III]/M☉ | 6.89 ± 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 | 38.81 ± 0.31 | 227 ± 62 | 122 ± 34 | 0.83 ± 0.76 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 38.78 ± 0.30 | 229 ± 62 | 95 ± 25 | 0.81 ± 0.31 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.60 ± 0.05 | 227 ± 62 | 124 ± 34 | 5.32 ± 0.63 |
| Hβ Broad | 39.96 +0.52−0.07 | 2263 ± 26 | 831 ± 25 | 12.34 ± 0.93 |
| [O III] 5007 | 40.32 ± 0.01 | 227 ± 62 | 124 ± 34 | 28.78 ± 0.67 |
| He I Narrow | 38.71 ± 0.19 | 229 ± 62 | 95 ± 25 | 0.74 ± 0.18 |
| He I Broad | 39.58 ± 0.09 | 2284 ± 63 | 970 ± 25 | 5.51 ± 0.68 |
| [O I] 6300 | 38.57 ± 0.23 | 229 ± 62 | 95 ± 25 | 0.56 ± 0.19 |
| Hα Narrow | 40.10 ± 0.01 | 229 ± 62 | 95 ± 25 | 19.14 ± 0.23 |
| Hα Broad | 40.59 ± 0.01 | 1410 ± 69 | 662 ± 25 | 58.26 ± 0.71 |
| [N II] 6585 | 39.97 ± 0.01 | 229 ± 62 | 95 ± 25 | 14.10 ± 0.21 |
| [S II] 6718 | 39.49 ± 0.03 | 229 ± 62 | 95 ± 25 | 4.66 ± 0.23 |
| [S II] 6732 | 39.43 ± 0.04 | 229 ± 62 | 95 ± 25 | 4.11 ± 0.23 |
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 | 8.18 |
|---|---|
| Hβ Broad SNR | 1.87 |
| Hγ Broad SNR | 0.47 |
| AGN frac | 0.61 |
| Host frac | 0.39 |
| log L5100,Host | 42.38 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 2 |
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.