LEDA 285329
Observation
| Spectrum ID | 404174006_sp1 |
|---|---|
| Alt name | g1742125-683049 |
| z | 0.0646 |
| RA, Dec | 265.5521, -68.5136 |
| MJD | 60164.39 |
| SNR/Å B/R | 14.1/26.9 |
| Obs Airmass | 1.29 |
| SMSS ID | 404174006 |
| Closest SMSS | 12.17'', 404174005 |
| SMSS Mean r6"ap | 16.4 ± 0.1 |
| 2MASS Kext | 11.8 ± 0.1 |
AGN Properties
| Spectrum Type | SF |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.066 |
| Power law αν | -0.67 ± 0.11 |
| log L5100,AGN | 42.78 ± 0.05 |
| 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 | 39.11 ± 0.41 | 345 ± 62 | 145 ± 25 | 0.99 ± 0.83 |
| He II Broad | — | — | — | — |
| Hβ Narrow | — | — | — | — |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 40.43 ± 0.03 | 348 ± 63 | 154 ± 26 | 22.00 ± 1.35 |
| He I Narrow | 39.66 ± 0.14 | 345 ± 62 | 145 ± 25 | 4.74 ± 0.97 |
| He I Broad | 40.98 ± 0.08 | 17661 ± 62 | 7500 ± 25 | 97.86 ± 8.82 |
| [O I] 6300 | 39.77 ± 0.11 | 345 ± 62 | 145 ± 25 | 6.69 ± 1.00 |
| Hα Narrow | 40.43 ± 0.04 | 345 ± 62 | 145 ± 25 | 31.96 ± 1.21 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 40.59 ± 0.02 | 345 ± 62 | 145 ± 25 | 46.88 ± 1.17 |
| [S II] 6718 | 40.06 ± 0.06 | 345 ± 62 | 145 ± 25 | 14.20 ± 1.20 |
| [S II] 6732 | 39.97 ± 0.07 | 345 ± 62 | 145 ± 25 | 11.57 ± 1.17 |
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 | 0.66 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.16 |
| Host frac | 0.84 |
| log L5100,Host | 43.50 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
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.