LEDA 3084960
Observation
| Spectrum ID | 18032661_sp1 |
|---|---|
| Alt name | g0404433-295323 |
| z | 0.0600 |
| RA, Dec | 61.1802, -29.8898 |
| MJD | 60257.64 |
| SNR/Å B/R | 4.0/4.0 |
| Obs Airmass | 1.00 |
| 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 | Bad |
|---|---|
| Quality Flag | bad_blue |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.009 |
| Power law αν | -1.50 ± 0.08 |
| log L5100,AGN | 43.54 ± 0.03 |
| log HβBr/[O III] | -0.28 ± 0.14 |
| log ML5100/M☉ | 6.87 ± 0.03 |
| log MHα/M☉ | 6.50 ± 0.07 |
| log MHβ/M☉ | 6.43 ± 0.08 |
| log M[O III]/M☉ | 6.69 ± 0.04 |
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 | 40.31 ± 0.26 | — | 252 ± 26 | 2.80 ± 0.69 |
| Hγ Broad | 40.82 ± 0.14 | 1199 ± 68 | 476 ± 26 | 7.72 ± 1.29 |
| [O III] 4364 | 40.00 ± 0.21 | 166 ± 68 | 68 ± 27 | 1.42 ± 0.42 |
| He II Narrow | 39.56 ± 0.41 | 166 ± 68 | 68 ± 27 | 0.54 ± 0.39 |
| He II Broad | 40.19 ± 0.33 | 1186 ± 63 | 503 ± 25 | 2.16 ± 1.17 |
| Hβ Narrow | 40.51 ± 0.16 | — | 252 ± 26 | 4.75 ± 0.60 |
| Hβ Broad | 40.75 ± 0.14 | 1203 ± 34 | 453 ± 25 | 7.21 ± 1.07 |
| [O III] 5007 | 41.03 ± 0.04 | — | 252 ± 26 | 15.80 ± 0.69 |
| He I Narrow | 39.86 ± 0.35 | 166 ± 68 | 68 ± 27 | 1.20 ± 0.56 |
| He I Broad | 40.38 ± 0.27 | 1198 ± 65 | 508 ± 26 | 3.79 ± 1.43 |
| [O I] 6300 | 39.98 ± 0.20 | 166 ± 68 | 68 ± 27 | 1.67 ± 0.46 |
| Hα Narrow | 41.17 ± 0.08 | 166 ± 68 | 68 ± 27 | 25.03 ± 0.81 |
| Hα Broad | 41.64 ± 0.04 | 1271 ± 96 | 487 ± 37 | 69.61 ± 1.83 |
| [N II] 6585 | 41.12 ± 0.05 | 166 ± 68 | 68 ± 27 | 23.26 ± 0.71 |
| [S II] 6718 | 40.55 ± 0.08 | 166 ± 68 | 68 ± 27 | 6.32 ± 0.53 |
| [S II] 6732 | 40.57 ± 0.09 | 166 ± 68 | 68 ± 27 | 6.45 ± 0.54 |
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 | 6.20 |
|---|---|
| Hβ Broad SNR | 1.20 |
| Hγ Broad SNR | 1.55 |
| AGN frac | 0.90 |
| Host frac | 0.10 |
| log L5100,Host | 42.57 |
| Fe II/Hβ | 1.33 |
| Fe II/[O III] | 0.61 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 0 |
balmer_width | 1 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.