LEDA 187364
Observation
| Spectrum ID | 296427349_sp1 |
|---|---|
| Alt name | g2026485-181648 |
| z | 0.0252 |
| RA, Dec | 306.7021, -18.2799 |
| MJD | 60166.49 |
| SNR/Å B/R | 14.6/30.1 |
| Obs Airmass | 1.10 |
| SMSS ID | 296427349 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.2 ± 0.1 |
| 2MASS Kext | 12.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.058 |
| Power law αν | -1.92 ± 0.07 |
| log L5100,AGN | 41.57 ± 0.11 |
| log HβBr/[O III] | -0.19 ± 0.08 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.53 ± 0.07 |
| log MHβ/M☉ | — |
| log M[O III]/M☉ | — |
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 | — | — | — | — |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 38.65 ± 0.24 | 204 ± 63 | 86 ± 25 | 6.13 ± 2.14 |
| He II Narrow | 38.56 ± 0.26 | 204 ± 63 | 86 ± 25 | 5.06 ± 1.88 |
| He II Broad | 39.04 ± 0.28 | 2081 ± 71 | 883 ± 29 | 15.23 ± 5.85 |
| Hβ Narrow | 39.36 ± 0.05 | 218 ± 63 | 175 ± 38 | 31.96 ± 3.63 |
| Hβ Broad | 39.79 ± 0.08 | — | 1770 ± 37 | 85.79 ± 8.10 |
| [O III] 5007 | 39.98 ± 0.02 | 218 ± 63 | 175 ± 38 | 133.48 ± 3.74 |
| He I Narrow | 38.25 ± 0.30 | 204 ± 63 | 86 ± 25 | 2.51 ± 1.06 |
| He I Broad | 39.48 ± 0.08 | 3309 ± 80 | 1405 ± 33 | 42.62 ± 9.22 |
| [O I] 6300 | 38.76 ± 0.09 | 204 ± 63 | 86 ± 25 | 8.13 ± 1.12 |
| Hα Narrow | 39.78 ± 0.01 | 204 ± 63 | 86 ± 25 | 85.93 ± 1.28 |
| Hα Broad | 40.46 ± 0.02 | 3023 ± 98 | 1675 ± 60 | 413.51 ± 7.61 |
| [N II] 6585 | 39.73 ± 0.01 | 204 ± 63 | 86 ± 25 | 76.41 ± 1.27 |
| [S II] 6718 | 39.32 ± 0.03 | 204 ± 63 | 86 ± 25 | 29.53 ± 1.37 |
| [S II] 6732 | 39.17 ± 0.05 | 204 ± 63 | 86 ± 25 | 21.11 ± 1.37 |
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 | 4.24 |
|---|---|
| Hβ Broad SNR | 1.50 |
| Hγ Broad SNR | 0.78 |
| AGN frac | 0.07 |
| Host frac | 0.93 |
| log L5100,Host | 42.70 |
| Fe II/Hβ | 0.76 |
| Fe II/[O III] | 0.49 |
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.