LEDA 127405
Observation
| Spectrum ID | 486878603_sp1 |
|---|---|
| Alt name | g2341335-645657 |
| z | 0.0554 |
| RA, Dec | 355.3901, -64.9492 |
| MJD | 60224.52 |
| SNR/Å B/R | 14.4/26.0 |
| Obs Airmass | 1.20 |
| SMSS ID | 486878603 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.5 ± 0.2 |
| 2MASS Kext | 11.2 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.018 |
| Power law αν | 0.43 ± 0.06 |
| log L5100,AGN | 42.84 ± 0.03 |
| log HβBr/[O III] | 0.26 ± 0.04 |
| log ML5100/M☉ | 7.47 ± 0.13 |
| log MHα/M☉ | 7.06 ± 0.04 |
| log MHβ/M☉ | 7.39 ± 0.14 |
| log M[O III]/M☉ | 7.39 ± 0.14 |
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 | 39.38 ± 0.36 | 355 ± 66 | 218 ± 26 | 1.21 ± 0.66 |
| Hγ Broad | 40.54 ± 0.09 | 3235 ± 384 | 1292 ± 44 | 17.01 ± 1.71 |
| [O III] 4364 | 39.58 ± 0.18 | 259 ± 63 | 109 ± 25 | 1.94 ± 0.44 |
| He II Narrow | 39.33 ± 0.26 | 259 ± 63 | 109 ± 25 | 1.30 ± 0.47 |
| He II Broad | 40.79 ± 0.07 | 11033 ± 67 | 4685 ± 27 | 37.52 ± 3.33 |
| Hβ Narrow | 39.64 ± 0.21 | 355 ± 66 | 219 ± 26 | 2.86 ± 1.11 |
| Hβ Broad | 40.88 ± 0.04 | 3415 ± 536 | 1461 ± 48 | 50.20 ± 2.25 |
| [O III] 5007 | 40.62 ± 0.02 | 355 ± 66 | 219 ± 26 | 30.02 ± 0.87 |
| He I Narrow | 38.89 ± 0.42 | 259 ± 63 | 109 ± 25 | 0.82 ± 0.57 |
| He I Broad | 40.38 ± 0.06 | 2828 ± 69 | 1201 ± 28 | 25.20 ± 2.20 |
| [O I] 6300 | 39.02 ± 0.32 | 259 ± 63 | 109 ± 25 | 1.31 ± 0.66 |
| Hα Narrow | 40.22 ± 0.04 | 259 ± 63 | 109 ± 25 | 23.10 ± 1.04 |
| Hα Broad | 41.56 ± 0.01 | 2583 ± 112 | 1209 ± 25 | 496.43 ± 3.52 |
| [N II] 6585 | 40.24 ± 0.03 | 259 ± 63 | 109 ± 25 | 24.08 ± 1.00 |
| [S II] 6718 | 39.69 ± 0.09 | 259 ± 63 | 109 ± 25 | 7.19 ± 0.85 |
| [S II] 6732 | 39.63 ± 0.09 | 259 ± 63 | 109 ± 25 | 6.32 ± 0.83 |
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 | 12.95 |
|---|---|
| Hβ Broad SNR | 3.01 |
| Hγ Broad SNR | 1.73 |
| AGN frac | 0.25 |
| Host frac | 0.75 |
| log L5100,Host | 43.31 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 0 |
balmer_snr | 1 |
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.