LEDA 3096649
Observation
| Spectrum ID | 3799344_sp1 |
|---|---|
| Alt name | g2155318-205133 |
| z | 0.0672 |
| RA, Dec | 328.8827, -20.8591 |
| MJD | 59078.41 |
| SNR/Å B/R | 12.3/21.3 |
| Obs Airmass | 2.05 |
| SMSS ID | 3799344 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.9 ± 0.0 |
| 2MASS Kext | 12.4 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.028 |
| Power law αν | -0.48 ± 0.13 |
| log L5100,AGN | 43.36 ± 0.03 |
| log HβBr/[O III] | 0.14 ± 0.05 |
| log ML5100/M☉ | 8.05 ± 0.06 |
| log MHα/M☉ | 7.44 ± 0.02 |
| log MHβ/M☉ | 7.89 ± 0.07 |
| log M[O III]/M☉ | 7.97 ± 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 | — | — | — | — |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.74 ± 0.28 | 261 ± 63 | 110 ± 25 | 0.96 ± 0.41 |
| He II Narrow | 39.73 ± 0.30 | 261 ± 63 | 110 ± 25 | 1.04 ± 0.39 |
| He II Broad | 40.24 ± 0.23 | 1316 ± 63 | 559 ± 25 | 3.38 ± 0.88 |
| Hβ Narrow | 40.07 ± 0.15 | 268 ± 63 | 141 ± 26 | 2.40 ± 0.47 |
| Hβ Broad | 41.22 ± 0.05 | 5096 ± 354 | 1968 ± 31 | 33.59 ± 1.94 |
| [O III] 5007 | 41.08 ± 0.02 | 268 ± 63 | 141 ± 26 | 25.84 ± 0.53 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.56 ± 0.09 | 3277 ± 64 | 1392 ± 26 | 10.01 ± 1.30 |
| [O I] 6300 | 40.00 ± 0.08 | 261 ± 63 | 110 ± 25 | 3.07 ± 0.34 |
| Hα Narrow | 40.78 ± 0.02 | 261 ± 63 | 110 ± 25 | 19.49 ± 0.43 |
| Hα Broad | 41.80 ± 0.01 | 3360 ± 75 | 1605 ± 38 | 204.81 ± 2.55 |
| [N II] 6585 | 40.85 ± 0.02 | 261 ± 63 | 110 ± 25 | 23.30 ± 0.43 |
| [S II] 6718 | 40.15 ± 0.06 | 261 ± 63 | 110 ± 25 | 4.75 ± 0.42 |
| [S II] 6732 | 40.16 ± 0.07 | 261 ± 63 | 110 ± 25 | 4.88 ± 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 | 6.66 |
|---|---|
| Hβ Broad SNR | 1.87 |
| Hγ Broad SNR | 0.89 |
| AGN frac | 0.40 |
| Host frac | 0.60 |
| log L5100,Host | 43.55 |
| Fe II/Hβ | 0.59 |
| Fe II/[O III] | 0.81 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
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.