LEDA 488003
Observation
| Spectrum ID | 480084365_sp1 |
|---|---|
| Alt name | g1916086-482246 |
| z | 0.0545 |
| RA, Dec | 289.0359, -48.3794 |
| MJD | 60165.47 |
| SNR/Å B/R | 19.9/36.0 |
| Obs Airmass | 1.06 |
| SMSS ID | 480084365 |
| Closest SMSS | 6.09'', 2684447120 |
| SMSS Mean r6"ap | 15.5 ± 0.0 |
| 2MASS Kext | 12.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.064 |
| Power law αν | -1.52 ± 0.07 |
| log L5100,AGN | 42.97 ± 0.03 |
| log HβBr/[O III] | <-0.28 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.78 ± 0.06 |
| 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 | 39.33 ± 0.36 | 325 ± 62 | 137 ± 25 | 1.13 ± 0.69 |
| He II Broad | — | — | — | — |
| Hβ Narrow | — | — | — | — |
| Hβ Broad | <40.48 | — | — | — |
| [O III] 5007 | 40.76 ± 0.03 | 353 ± 63 | 358 ± 36 | 31.38 ± 1.33 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.45 ± 0.10 | 5688 ± 62 | 2415 ± 25 | 16.65 ± 1.98 |
| [O I] 6300 | 39.15 ± 0.33 | 325 ± 62 | 137 ± 25 | 0.87 ± 0.43 |
| Hα Narrow | 40.40 ± 0.03 | 325 ± 62 | 137 ± 25 | 15.39 ± 0.53 |
| Hα Broad | 40.78 ± 0.04 | 3236 ± 76 | 1177 ± 25 | 37.57 ± 1.57 |
| [N II] 6585 | 40.56 ± 0.02 | 325 ± 62 | 137 ± 25 | 22.55 ± 0.53 |
| [S II] 6718 | 40.00 ± 0.06 | 325 ± 62 | 137 ± 25 | 6.23 ± 0.49 |
| [S II] 6732 | 40.05 ± 0.05 | 325 ± 62 | 137 ± 25 | 7.03 ± 0.50 |
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 | 1.48 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.18 |
| Host frac | 0.82 |
| log L5100,Host | 43.62 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
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.