LEDA 3794345
Observation
| Spectrum ID | 104108638_sp1 |
|---|---|
| Alt name | g1242105-222819 |
| z | 0.0457 |
| RA, Dec | 190.5435, -22.4720 |
| MJD | 61097.64 |
| SNR/Å B/R | 3.8/11.7 |
| Obs Airmass | 1.04 |
| SMSS ID | 104108638 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.7 ± 0.0 |
| 2MASS Kext | 12.3 ± 0.1 |
AGN Properties
| Spectrum Type | Bad |
|---|---|
| Quality Flag | bad_all |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.047 |
| Power law αν | -1.52 ± 0.18 |
| log L5100,AGN | 42.22 ± 0.06 |
| log HβBr/[O III] | — |
| log ML5100/M☉ | — |
| log MHα/M☉ | — |
| 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 | — | — | — | — |
| He II Narrow | 38.85 ± 0.46 | 310 ± 63 | 129 ± 25 | 2.11 ± 1.91 |
| He II Broad | 39.60 ± 0.26 | 1218 ± 63 | 517 ± 25 | 11.74 ± 4.24 |
| Hβ Narrow | — | — | — | — |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 40.47 ± 0.03 | 359 ± 64 | 455 ± 33 | 90.09 ± 4.42 |
| He I Narrow | 39.07 ± 0.19 | 310 ± 63 | 129 ± 25 | 3.93 ± 0.78 |
| He I Broad | 38.62 ± 0.52 | 1206 ± 63 | 512 ± 25 | 1.40 ± 1.36 |
| [O I] 6300 | 38.35 ± 0.43 | 310 ± 63 | 129 ± 25 | 0.78 ± 0.63 |
| Hα Narrow | 39.40 ± 0.12 | 310 ± 63 | 129 ± 25 | 8.77 ± 0.99 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 39.73 ± 0.03 | 310 ± 63 | 129 ± 25 | 18.68 ± 0.87 |
| [S II] 6718 | 39.25 ± 0.09 | 310 ± 63 | 129 ± 25 | 6.25 ± 0.72 |
| [S II] 6732 | 38.91 ± 0.18 | 310 ± 63 | 129 ± 25 | 2.85 ± 0.71 |
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 | 0.60 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.36 |
| Host frac | 0.64 |
| log L5100,Host | 42.47 |
| Fe II/Hβ | — |
| Fe II/[O III] | 1.08 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
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.