LEDA 845026
Observation
| Spectrum ID | 12341729_sp1 |
|---|---|
| Alt name | 2354299727896266752 |
| z | 0.1008 |
| RA, Dec | 18.6082, -20.1972 |
| MJD | 60931.63 |
| SNR/Å B/R | 14.6/21.2 |
| Obs Airmass | 1.03 |
| SMSS ID | 12341729 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.3 ± 0.1 |
| 2MASS Kext | 13.2 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | AllBRICQS2 |
| MW E(B−V) | 0.015 |
| Power law αν | 0.13 ± 0.16 |
| log L5100,AGN | 43.85 ± 0.03 |
| log HβBr/[O III] | -0.37 ± 0.39 |
| log ML5100/M☉ | 8.13 ± 0.02 |
| log MHα/M☉ | 8.30 ± 0.03 |
| log MHβ/M☉ | 7.86 ± 0.19 |
| log M[O III]/M☉ | 8.18 ± 0.02 |
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 | 41.25 ± 0.12 | 1447 ± 197 | 1854 ± 221 | 9.01 ± 1.25 |
| [O III] 4364 | 39.80 ± 0.41 | 364 ± 63 | 154 ± 25 | 0.32 ± 0.27 |
| He II Narrow | 40.24 ± 0.19 | 364 ± 63 | 154 ± 25 | 1.03 ± 0.30 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.79 ± 0.07 | 384 ± 63 | 277 ± 29 | 4.01 ± 0.57 |
| Hβ Broad | 41.40 +0.71−0.08 | 4437 ± 109 | 1578 ± 43 | 16.29 ± 1.14 |
| [O III] 5007 | 41.77 ± 0.01 | 384 ± 63 | 278 ± 29 | 40.85 ± 0.69 |
| He I Narrow | 39.73 ± 0.31 | 364 ± 63 | 154 ± 25 | 0.52 ± 0.27 |
| He I Broad | 41.18 ± 0.08 | 9796 ± 111 | 4160 ± 46 | 14.94 ± 1.35 |
| [O I] 6300 | 40.41 ± 0.07 | 364 ± 63 | 154 ± 25 | 2.90 ± 0.31 |
| Hα Narrow | 41.00 ± 0.03 | 364 ± 63 | 154 ± 25 | 12.30 ± 0.39 |
| Hα Broad | 42.42 ± 0.01 | 5844 ± 122 | 2932 ± 43 | 326.10 ± 2.31 |
| [N II] 6585 | 41.17 ± 0.02 | 364 ± 63 | 154 ± 25 | 18.41 ± 0.47 |
| [S II] 6718 | 40.73 ± 0.04 | 364 ± 63 | 154 ± 25 | 7.02 ± 0.40 |
| [S II] 6732 | 40.62 ± 0.05 | 364 ± 63 | 154 ± 25 | 5.36 ± 0.40 |
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 | 8.77 |
|---|---|
| Hβ Broad SNR | 1.77 |
| Hγ Broad SNR | 2.31 |
| AGN frac | 0.63 |
| Host frac | 0.37 |
| log L5100,Host | 43.62 |
| 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 | 2 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.