LEDA 1076753
Observation
| Spectrum ID | 25268216_sp1 |
|---|---|
| Alt name | g0446568-030512 |
| z | 0.0313 |
| RA, Dec | 71.7364, -3.0866 |
| MJD | 60589.74 |
| SNR/Å B/R | 18.3/33.7 |
| Obs Airmass | 1.14 |
| SMSS ID | 25268216 |
| Closest SMSS | 9.61'', 25268215 |
| SMSS Mean r6"ap | 15.2 ± 0.0 |
| 2MASS Kext | 11.4 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.045 |
| Power law αν | -0.88 ± 0.07 |
| log L5100,AGN | 43.05 ± 0.02 |
| log HβBr/[O III] | -0.56 ± 0.04 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 7.71 ± 0.04 |
| 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 | — | — | — | — |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.29 ± 0.33 | 389 ± 63 | 164 ± 25 | 0.76 ± 0.40 |
| He II Narrow | 39.68 ± 0.18 | 389 ± 63 | 164 ± 25 | 1.98 ± 0.37 |
| He II Broad | 40.18 ± 0.12 | 1442 ± 90 | 612 ± 37 | 5.97 ± 0.73 |
| Hβ Narrow | 40.18 ± 0.05 | 391 ± 63 | 201 ± 29 | 6.47 ± 0.48 |
| Hβ Broad | 40.81 ± 0.04 | — | 2076 ± 32 | 27.71 ± 1.49 |
| [O III] 5007 | 41.37 ± 0.01 | 391 ± 63 | 201 ± 29 | 104.71 ± 0.61 |
| He I Narrow | 39.34 ± 0.23 | 389 ± 63 | 164 ± 25 | 1.17 ± 0.27 |
| He I Broad | 39.51 ± 0.27 | 1185 ± 64 | 503 ± 26 | 1.72 ± 0.46 |
| [O I] 6300 | 39.88 ± 0.05 | 389 ± 63 | 164 ± 25 | 4.41 ± 0.31 |
| Hα Narrow | 40.88 ± 0.01 | 389 ± 63 | 164 ± 25 | 45.62 ± 0.38 |
| Hα Broad | 41.50 ± 0.01 | 5652 ± 216 | 2109 ± 76 | 194.72 ± 1.30 |
| [N II] 6585 | 40.70 ± 0.02 | 389 ± 63 | 164 ± 25 | 30.73 ± 0.36 |
| [S II] 6718 | 40.27 ± 0.02 | 389 ± 63 | 164 ± 25 | 11.62 ± 0.36 |
| [S II] 6732 | 40.24 ± 0.02 | 389 ± 63 | 164 ± 25 | 11.01 ± 0.35 |
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 | 6.64 |
|---|---|
| Hβ Broad SNR | 2.61 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.35 |
| Host frac | 0.65 |
| log L5100,Host | 43.31 |
| Fe II/Hβ | 0.90 |
| Fe II/[O III] | 0.24 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 1 |
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.