LEDA 649694
Observation
| Spectrum ID | 233877697_sp1 |
|---|---|
| Alt name | g2040143-352234 |
| z | 0.0872 |
| RA, Dec | 310.0597, -35.3762 |
| MJD | 60166.5 |
| SNR/Å B/R | 13.1/22.7 |
| Obs Airmass | 1.05 |
| SMSS ID | 233877697 |
| Closest SMSS | 4.30'', 2336149775 |
| SMSS Mean r6"ap | 16.8 ± 0.1 |
| 2MASS Kext | 12.4 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.035 |
| Power law αν | 0.26 ± 0.17 |
| log L5100,AGN | 43.13 ± 0.03 |
| log HβBr/[O III] | <-0.65 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 7.19 ± 0.16 |
| 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 | 40.11 ± 0.16 | 524 ± 63 | 316 ± 34 | 3.38 ± 0.92 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.48 ± 0.41 | 503 ± 62 | 214 ± 25 | 0.80 ± 0.57 |
| He II Narrow | 39.59 ± 0.37 | 503 ± 62 | 214 ± 25 | 1.22 ± 0.62 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.62 ± 0.05 | 524 ± 63 | 316 ± 34 | 14.30 ± 1.15 |
| Hβ Broad | <40.62 | — | — | — |
| [O III] 5007 | 41.27 ± 0.02 | 524 ± 63 | 316 ± 34 | 67.95 ± 1.34 |
| He I Narrow | 39.56 ± 0.29 | 503 ± 62 | 214 ± 25 | 1.89 ± 0.79 |
| He I Broad | 40.00 ± 0.33 | 4402 ± 63 | 1869 ± 25 | 5.24 ± 2.12 |
| [O I] 6300 | 40.08 ± 0.08 | 503 ± 62 | 214 ± 25 | 7.40 ± 0.90 |
| Hα Narrow | 41.32 ± 0.01 | 503 ± 62 | 214 ± 25 | 140.48 ± 1.10 |
| Hα Broad | 41.42 ± 0.02 | 3293 ± 589 | 1679 ± 36 | 178.28 ± 3.29 |
| [N II] 6585 | 41.21 ± 0.01 | 503 ± 62 | 214 ± 25 | 108.47 ± 1.16 |
| [S II] 6718 | 40.64 ± 0.03 | 503 ± 62 | 214 ± 25 | 30.78 ± 1.17 |
| [S II] 6732 | 40.58 ± 0.03 | 503 ± 62 | 214 ± 25 | 27.07 ± 1.19 |
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 | 4.25 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.32 |
| Host frac | 0.67 |
| log L5100,Host | 43.45 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
l5100 | 1 |
balmer | 2 |
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.