LEDA 83641
Observation
| Spectrum ID | 98156119_sp1 |
|---|---|
| Alt name | g1254564-265702 |
| z | 0.0592 |
| RA, Dec | 193.7347, -26.9506 |
| MJD | 59725.47 |
| SNR/Å B/R | 7.4/18.9 |
| Obs Airmass | 1.01 |
| SMSS ID | 98156119 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.4 ± 0.4 |
| 2MASS Kext | 11.1 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.064 |
| Power law αν | -1.13 ± 0.10 |
| log L5100,AGN | 43.76 ± 0.01 |
| log HβBr/[O III] | -1.26 ± 0.18 |
| log ML5100/M☉ | 6.95 ± 0.02 |
| log MHα/M☉ | 7.52 ± 0.04 |
| log MHβ/M☉ | 6.46 ± 0.10 |
| log M[O III]/M☉ | 7.20 ± 0.03 |
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 | 40.53 ± 0.19 | 416 ± 63 | 300 ± 25 | 2.57 ± 0.61 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 40.26 ± 0.22 | 363 ± 63 | 154 ± 25 | 1.39 ± 0.41 |
| He II Narrow | 40.02 ± 0.36 | 363 ± 63 | 154 ± 25 | 0.85 ± 0.37 |
| He II Broad | 40.32 ± 0.33 | 1183 ± 63 | 502 ± 25 | 1.69 ± 0.68 |
| Hβ Narrow | 41.10 ± 0.07 | 416 ± 63 | 300 ± 25 | 10.54 ± 0.56 |
| Hβ Broad | 40.85 ± 0.18 | 1181 ± 25 | 455 ± 25 | 5.12 ± 0.69 |
| [O III] 5007 | 42.11 ± 0.01 | 416 ± 63 | 300 ± 25 | 112.02 ± 0.64 |
| He I Narrow | 40.11 ± 0.16 | 363 ± 63 | 154 ± 25 | 1.28 ± 0.21 |
| He I Broad | 39.97 ± 0.36 | 1213 ± 63 | 515 ± 25 | 0.92 ± 0.37 |
| [O I] 6300 | 40.93 ± 0.02 | 363 ± 63 | 154 ± 25 | 9.04 ± 0.23 |
| Hα Narrow | 41.55 ± 0.01 | 363 ± 63 | 154 ± 25 | 39.08 ± 0.30 |
| Hα Broad | 42.18 ± 0.01 | 2845 ± 112 | 2913 ± 28 | 167.24 ± 1.39 |
| [N II] 6585 | 41.43 ± 0.01 | 363 ± 63 | 154 ± 25 | 29.81 ± 0.29 |
| [S II] 6718 | 41.15 ± 0.01 | 363 ± 63 | 154 ± 25 | 15.66 ± 0.26 |
| [S II] 6732 | 41.03 ± 0.02 | 363 ± 63 | 154 ± 25 | 11.90 ± 0.26 |
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 | 6.93 |
|---|---|
| Hβ Broad SNR | 1.89 |
| Hγ Broad SNR | 0.54 |
| AGN frac | 0.84 |
| Host frac | 0.16 |
| log L5100,Host | 43.04 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
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.