LEDA 584623
Observation
| Spectrum ID | 1608495_sp2 |
|---|---|
| Alt name | g2244464-403541 |
| z | 0.0664 |
| RA, Dec | 341.1935, -40.5947 |
| MJD | 60171.59 |
| SNR/Å B/R | 14.3/21.9 |
| Obs Airmass | 1.04 |
| SMSS ID | 1608495 |
| Closest SMSS | 7.59'', 2002730871 |
| SMSS Mean r6"ap | 16.6 ± 0.1 |
| 2MASS Kext | 12.7 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.013 |
| Power law αν | -0.65 ± 0.37 |
| log L5100,AGN | 42.54 ± 0.09 |
| log HβBr/[O III] | 0.55 ± 0.03 |
| log ML5100/M☉ | 7.62 ± 0.19 |
| log MHα/M☉ | 7.19 ± 0.03 |
| log MHβ/M☉ | 7.77 ± 0.19 |
| log M[O III]/M☉ | 7.64 ± 0.19 |
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 | 39.46 ± 0.33 | 362 ± 64 | 160 ± 27 | 3.34 ± 1.66 |
| Hγ Broad | 40.31 ± 0.10 | 1321 ± 82 | 482 ± 29 | 21.90 ± 2.58 |
| [O III] 4364 | 39.76 ± 0.13 | 358 ± 64 | 152 ± 26 | 6.97 ± 1.32 |
| He II Narrow | 39.54 ± 0.21 | 358 ± 64 | 152 ± 26 | 4.56 ± 1.32 |
| He II Broad | 40.26 ± 0.16 | 5408 ± 92 | 2296 ± 38 | 23.88 ± 5.03 |
| Hβ Narrow | 40.07 ± 0.08 | 362 ± 64 | 160 ± 27 | 15.91 ± 1.77 |
| Hβ Broad | 41.12 ± 0.03 | 4682 ± 973 | 2355 ± 60 | 179.79 ± 6.23 |
| [O III] 5007 | 40.57 ± 0.02 | 362 ± 64 | 160 ± 27 | 52.32 ± 1.82 |
| He I Narrow | — | — | — | — |
| He I Broad | 39.83 ± 0.21 | 2336 ± 98 | 992 ± 41 | 12.23 ± 3.47 |
| [O I] 6300 | — | — | — | — |
| Hα Narrow | 40.51 ± 0.03 | 358 ± 64 | 152 ± 26 | 67.68 ± 1.70 |
| Hα Broad | 41.56 ± 0.01 | 3018 ± 89 | 2666 ± 72 | 750.72 ± 10.22 |
| [N II] 6585 | 40.10 ± 0.06 | 358 ± 64 | 152 ± 26 | 26.56 ± 1.63 |
| [S II] 6718 | 39.71 ± 0.10 | 358 ± 64 | 152 ± 26 | 11.04 ± 1.61 |
| [S II] 6732 | 40.00 ± 0.06 | 358 ± 64 | 152 ± 26 | 21.53 ± 1.73 |
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 | 7.97 |
|---|---|
| Hβ Broad SNR | 3.36 |
| Hγ Broad SNR | 2.26 |
| AGN frac | 0.13 |
| Host frac | 0.87 |
| log L5100,Host | 43.37 |
| Fe II/Hβ | 0.40 |
| Fe II/[O III] | 1.42 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 0 |
balmer_snr | 1 |
hb_width | 1 |
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.