LEDA 597525
Observation
| Spectrum ID | 488469020_sp1 |
|---|---|
| Alt name | g2129028-392954 |
| z | 0.0765 |
| RA, Dec | 322.2619, -39.4982 |
| MJD | 60167.56 |
| SNR/Å B/R | 14.9/25.7 |
| Obs Airmass | 1.03 |
| SMSS ID | 488469020 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.6 ± 0.0 |
| 2MASS Kext | 12.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.026 |
| Power law αν | -0.24 ± 0.23 |
| log L5100,AGN | 43.13 ± 0.04 |
| log HβBr/[O III] | 0.18 ± 0.39 |
| log ML5100/M☉ | 7.53 ± 0.03 |
| log MHα/M☉ | 7.09 ± 0.04 |
| log MHβ/M☉ | 7.24 ± 0.19 |
| log M[O III]/M☉ | 7.27 ± 0.06 |
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 | 39.49 ± 0.35 | 405 ± 65 | 385 ± 60 | 0.88 ± 0.78 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | — | — | — | — |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.37 ± 0.08 | 405 ± 65 | 386 ± 59 | 8.12 ± 0.92 |
| Hβ Broad | 40.68 +0.68−0.08 | 3168 ± 27 | 1118 ± 25 | 16.69 ± 1.45 |
| [O III] 5007 | 40.50 ± 0.06 | 405 ± 65 | 386 ± 60 | 11.52 ± 1.00 |
| He I Narrow | 39.55 ± 0.20 | 376 ± 63 | 158 ± 25 | 1.71 ± 0.40 |
| He I Broad | 39.29 ± 0.45 | 1187 ± 63 | 504 ± 25 | 0.93 ± 0.77 |
| [O I] 6300 | 39.47 ± 0.19 | 376 ± 63 | 158 ± 25 | 1.60 ± 0.42 |
| Hα Narrow | 40.96 ± 0.01 | 376 ± 63 | 158 ± 25 | 54.06 ± 0.58 |
| Hα Broad | 41.39 ± 0.01 | 2995 ± 127 | 1240 ± 25 | 143.83 ± 1.78 |
| [N II] 6585 | 40.62 ± 0.02 | 376 ± 63 | 158 ± 25 | 24.45 ± 0.55 |
| [S II] 6718 | 40.15 ± 0.05 | 376 ± 63 | 158 ± 25 | 8.52 ± 0.65 |
| [S II] 6732 | 40.01 ± 0.08 | 376 ± 63 | 158 ± 25 | 6.23 ± 0.67 |
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 | 6.13 |
|---|---|
| Hβ Broad SNR | 1.60 |
| Hγ Broad SNR | 0.52 |
| AGN frac | 0.37 |
| Host frac | 0.63 |
| log L5100,Host | 43.37 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 1 |
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.