LEDA 3084960
Observation
| Spectrum ID | 18032661_sp2 |
|---|---|
| Alt name | g0404433-295323 |
| z | 0.0600 |
| RA, Dec | 61.1802, -29.8898 |
| MJD | 60552.74 |
| SNR/Å B/R | 7.2/11.6 |
| Obs Airmass | 1.08 |
| SMSS ID | 18032661 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 17.1 ± 0.1 |
| 2MASS Kext | 13.9 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.009 |
| Power law αν | -1.19 ± 0.21 |
| log L5100,AGN | 42.98 ± 0.03 |
| log HβBr/[O III] | -0.43 ± 0.05 |
| log ML5100/M☉ | 7.18 ± 0.08 |
| log MHα/M☉ | 6.67 ± 0.04 |
| log MHβ/M☉ | 6.94 ± 0.09 |
| log M[O III]/M☉ | 7.27 ± 0.08 |
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 | 39.99 ± 0.07 | 195 ± 62 | 106 ± 26 | 4.59 ± 0.47 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.42 ± 0.23 | 194 ± 62 | 79 ± 25 | 1.23 ± 0.38 |
| He II Narrow | 39.30 ± 0.28 | 194 ± 62 | 79 ± 25 | 0.98 ± 0.34 |
| He II Broad | 39.95 ± 0.16 | 1178 ± 62 | 500 ± 25 | 4.46 ± 0.90 |
| Hβ Narrow | 40.33 ± 0.03 | 195 ± 62 | 106 ± 26 | 10.86 ± 0.44 |
| Hβ Broad | 40.66 ± 0.05 | 2267 ± 194 | 863 ± 37 | 22.78 ± 1.35 |
| [O III] 5007 | 41.09 ± 0.01 | 195 ± 62 | 106 ± 26 | 64.23 ± 0.51 |
| He I Narrow | 39.43 ± 0.13 | 194 ± 62 | 79 ± 25 | 1.61 ± 0.30 |
| He I Broad | 40.58 ± 0.08 | 9086 ± 70 | 3858 ± 28 | 22.44 ± 2.52 |
| [O I] 6300 | 39.60 ± 0.12 | 194 ± 62 | 79 ± 25 | 2.51 ± 0.35 |
| Hα Narrow | 40.94 ± 0.01 | 194 ± 62 | 79 ± 25 | 56.40 ± 0.48 |
| Hα Broad | 41.31 ± 0.02 | 1954 ± 69 | 979 ± 91 | 133.16 ± 3.02 |
| [N II] 6585 | 40.73 ± 0.01 | 194 ± 62 | 79 ± 25 | 35.31 ± 0.46 |
| [S II] 6718 | 40.26 ± 0.02 | 194 ± 62 | 79 ± 25 | 12.09 ± 0.33 |
| [S II] 6732 | 40.17 ± 0.03 | 194 ± 62 | 79 ± 25 | 9.86 ± 0.34 |
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 | 8.28 |
|---|---|
| Hβ Broad SNR | 2.54 |
| Hγ Broad SNR | 0.89 |
| AGN frac | 0.65 |
| Host frac | 0.35 |
| log L5100,Host | 42.71 |
| Fe II/Hβ | 0.40 |
| Fe II/[O III] | 0.15 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 2 |
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.