LEDA 955931
Observation
| Spectrum ID | 20687612_sp1 |
|---|---|
| Alt name | g0303156-121330 |
| z | 0.0768 |
| RA, Dec | 45.8149, -12.2249 |
| MJD | 60224.71 |
| SNR/Å B/R | 10.0/20.5 |
| Obs Airmass | 1.09 |
| SMSS ID | 20687612 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.6 ± 0.1 |
| 2MASS Kext | 12.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.060 |
| Power law αν | -1.97 ± 0.03 |
| log L5100,AGN | 42.94 ± 0.07 |
| log HβBr/[O III] | <-0.34 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 7.59 ± 0.03 |
| 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 | 39.64 ± 0.36 | 357 ± 63 | 166 ± 26 | 2.52 ± 1.31 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.30 ± 0.46 | 354 ± 62 | 149 ± 25 | 1.15 ± 1.11 |
| He II Narrow | 39.54 ± 0.36 | 354 ± 62 | 149 ± 25 | 2.01 ± 1.00 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.09 ± 0.12 | 357 ± 63 | 166 ± 26 | 7.18 ± 1.16 |
| Hβ Broad | <40.89 | — | — | — |
| [O III] 5007 | 41.23 ± 0.01 | 357 ± 63 | 166 ± 26 | 97.67 ± 1.30 |
| He I Narrow | 39.89 ± 0.13 | 354 ± 62 | 149 ± 25 | 4.58 ± 0.70 |
| He I Broad | — | — | — | — |
| [O I] 6300 | 40.13 ± 0.06 | 354 ± 62 | 149 ± 25 | 7.91 ± 0.66 |
| Hα Narrow | 40.77 ± 0.02 | 354 ± 62 | 149 ± 25 | 34.95 ± 0.77 |
| Hα Broad | 41.58 ± 0.02 | 4695 ± 141 | 3032 ± 102 | 220.49 ± 5.11 |
| [N II] 6585 | 40.97 ± 0.01 | 354 ± 62 | 149 ± 25 | 55.04 ± 0.77 |
| [S II] 6718 | 40.45 ± 0.04 | 354 ± 62 | 149 ± 25 | 16.74 ± 1.01 |
| [S II] 6732 | 40.46 ± 0.04 | 354 ± 62 | 149 ± 25 | 16.87 ± 1.03 |
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 | 3.34 |
|---|---|
| Hβ Broad SNR | 0.16 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.25 |
| Host frac | 0.75 |
| log L5100,Host | 43.43 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 1 |
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.