LEDA 814593
Observation
| Spectrum ID | 22578181_sp2 |
|---|---|
| Alt name | g0444039-222446 |
| z | 0.0755 |
| RA, Dec | 71.0164, -22.4130 |
| MJD | 60589.73 |
| SNR/Å B/R | 12.2/22.9 |
| Obs Airmass | 1.02 |
| SMSS ID | 22578181 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.7 ± 0.0 |
| 2MASS Kext | 13.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.040 |
| Power law αν | -1.08 ± 0.22 |
| log L5100,AGN | 43.41 ± 0.03 |
| log HβBr/[O III] | -0.10 ± 0.31 |
| log ML5100/M☉ | 7.62 ± 0.03 |
| log MHα/M☉ | 6.90 ± 0.03 |
| log MHβ/M☉ | 7.33 ± 0.15 |
| log M[O III]/M☉ | 7.51 ± 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 | 40.26 ± 0.13 | 376 ± 63 | 214 ± 28 | 3.09 ± 0.49 |
| Hγ Broad | 40.55 ± 0.14 | 1732 ± 143 | 642 ± 48 | 5.45 ± 0.95 |
| [O III] 4364 | 40.03 ± 0.16 | 373 ± 63 | 158 ± 25 | 1.82 ± 0.43 |
| He II Narrow | 39.45 ± 0.38 | 373 ± 63 | 158 ± 25 | 0.51 ± 0.37 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.82 ± 0.04 | 376 ± 63 | 214 ± 28 | 12.55 ± 0.62 |
| Hβ Broad | 40.95 +0.55−0.06 | 3067 ± 76 | 1141 ± 35 | 17.06 ± 1.27 |
| [O III] 5007 | 41.05 ± 0.02 | 376 ± 63 | 214 ± 28 | 21.68 ± 0.50 |
| He I Narrow | 39.45 ± 0.29 | 373 ± 63 | 158 ± 25 | 0.64 ± 0.29 |
| He I Broad | 40.84 ± 0.06 | 6189 ± 85 | 2628 ± 35 | 15.43 ± 1.18 |
| [O I] 6300 | 39.82 ± 0.12 | 373 ± 63 | 158 ± 25 | 1.59 ± 0.26 |
| Hα Narrow | 41.43 ± 0.01 | 373 ± 63 | 158 ± 25 | 67.88 ± 0.39 |
| Hα Broad | 41.61 ± 0.01 | 2071 ± 71 | 919 ± 30 | 102.52 ± 1.19 |
| [N II] 6585 | 41.14 ± 0.01 | 373 ± 63 | 158 ± 25 | 34.55 ± 0.35 |
| [S II] 6718 | 40.60 ± 0.02 | 373 ± 63 | 158 ± 25 | 10.12 ± 0.38 |
| [S II] 6732 | 40.53 ± 0.04 | 373 ± 63 | 158 ± 25 | 8.67 ± 0.47 |
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 | 8.53 |
|---|---|
| Hβ Broad SNR | 1.93 |
| Hγ Broad SNR | 1.51 |
| AGN frac | 0.54 |
| Host frac | 0.46 |
| log L5100,Host | 43.35 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/1 |
|---|---|
l5100 | 0 |
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.