SDSS J220509.50-004820.6
Observation
| Spectrum ID | 5660207_sp1 |
|---|---|
| Alt name | g2205095-004821 |
| z | 0.0978 |
| RA, Dec | 331.2896, -0.8057 |
| MJD | 59079.55 |
| SNR/Å B/R | 13.2/22.2 |
| Obs Airmass | 1.22 |
| SMSS ID | 5660207 |
| Closest SMSS | 9.91'', 5660206 |
| SMSS Mean r6"ap | 17.3 ± 0.0 |
| 2MASS Kext | 13.3 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.082 |
| Power law αν | -1.16 ± 0.12 |
| log L5100,AGN | 43.09 ± 0.04 |
| log HβBr/[O III] | -0.84 ± 0.06 |
| log ML5100/M☉ | 7.14 ± 0.24 |
| log MHα/M☉ | 7.26 ± 0.03 |
| log MHβ/M☉ | 6.98 ± 0.25 |
| log M[O III]/M☉ | 7.52 ± 0.24 |
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 | 40.41 ± 0.09 | 402 ± 62 | 178 ± 25 | 9.22 ± 0.96 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 40.25 ± 0.09 | 399 ± 62 | 168 ± 25 | 6.46 ± 0.87 |
| He II Narrow | 39.97 ± 0.19 | 399 ± 62 | 168 ± 25 | 3.60 ± 0.82 |
| He II Broad | 39.63 ± 0.48 | 1186 ± 63 | 503 ± 25 | 1.62 ± 1.38 |
| Hβ Narrow | 40.87 ± 0.03 | 402 ± 62 | 178 ± 25 | 28.99 ± 0.99 |
| Hβ Broad | 40.94 ± 0.06 | 2054 ± 518 | 937 ± 70 | 33.99 ± 2.45 |
| [O III] 5007 | 41.78 ± 0.01 | 402 ± 62 | 178 ± 25 | 242.71 ± 1.28 |
| He I Narrow | 39.12 ± 0.50 | 399 ± 62 | 168 ± 25 | 0.61 ± 0.58 |
| He I Broad | 40.46 ± 0.08 | 1504 ± 65 | 638 ± 26 | 13.33 ± 1.27 |
| [O I] 6300 | 40.55 ± 0.03 | 399 ± 62 | 168 ± 25 | 17.38 ± 0.74 |
| Hα Narrow | 41.43 ± 0.01 | 399 ± 62 | 168 ± 25 | 135.47 ± 0.86 |
| Hα Broad | 42.01 ± 0.01 | 2354 ± 86 | 1286 ± 25 | 524.79 ± 2.81 |
| [N II] 6585 | 41.18 ± 0.01 | 399 ± 62 | 168 ± 25 | 76.42 ± 0.99 |
| [S II] 6718 | 40.94 ± 0.01 | 399 ± 62 | 168 ± 25 | 45.08 ± 0.92 |
| [S II] 6732 | 40.87 ± 0.02 | 399 ± 62 | 168 ± 25 | 38.67 ± 0.88 |
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 | 17.64 |
|---|---|
| Hβ Broad SNR | 2.54 |
| Hγ Broad SNR | 0.91 |
| AGN frac | 0.23 |
| Host frac | 0.77 |
| log L5100,Host | 43.62 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 1 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 0 |
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.