6dFGS gJ220156.8-782828
Observation
| Spectrum ID | 485497723_sp1 |
|---|---|
| Alt name | g2201568-782828 |
| z | 0.0951 |
| RA, Dec | 330.4868, -78.4743 |
| MJD | 60168.61 |
| SNR/Å B/R | 8.2/11.0 |
| Obs Airmass | 1.47 |
| SMSS ID | 485497723 |
| Closest SMSS | 6.33'', 1591224669 |
| SMSS Mean r6"ap | 16.8 ± 0.0 |
| 2MASS Kext | 12.9 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.133 |
| Power law αν | -0.19 ± 0.22 |
| log L5100,AGN | 43.37 ± 0.03 |
| log HβBr/[O III] | -0.23 ± 0.41 |
| log ML5100/M☉ | 7.76 ± 0.04 |
| log MHα/M☉ | 7.04 ± 0.05 |
| log MHβ/M☉ | 7.43 ± 0.20 |
| log M[O III]/M☉ | 7.67 ± 0.05 |
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 | 40.44 ± 0.06 | 222 ± 63 | 111 ± 26 | 4.47 ± 0.42 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.41 ± 0.41 | 208 ± 62 | 85 ± 25 | 0.42 ± 0.32 |
| He II Narrow | 39.55 ± 0.32 | 208 ± 62 | 85 ± 25 | 0.66 ± 0.33 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.85 ± 0.02 | 222 ± 63 | 111 ± 26 | 14.12 ± 0.49 |
| Hβ Broad | 40.82 +0.73−0.10 | 3668 ± 158 | 1292 ± 59 | 13.48 ± 1.65 |
| [O III] 5007 | 41.05 ± 0.02 | 222 ± 63 | 111 ± 26 | 23.90 ± 0.56 |
| He I Narrow | 39.86 ± 0.14 | 208 ± 62 | 85 ± 25 | 2.05 ± 0.32 |
| He I Broad | 40.07 ± 0.22 | 1497 ± 109 | 635 ± 45 | 3.34 ± 0.94 |
| [O I] 6300 | 39.95 ± 0.10 | 208 ± 62 | 85 ± 25 | 2.85 ± 0.40 |
| Hα Narrow | 41.34 ± 0.01 | 208 ± 62 | 85 ± 25 | 74.79 ± 0.57 |
| Hα Broad | 41.44 ± 0.02 | 2751 ± 121 | 1078 ± 35 | 94.24 ± 2.02 |
| [N II] 6585 | 41.07 ± 0.01 | 208 ± 62 | 85 ± 25 | 41.21 ± 0.46 |
| [S II] 6718 | 40.67 ± 0.02 | 208 ± 62 | 85 ± 25 | 16.66 ± 0.52 |
| [S II] 6732 | 40.61 ± 0.03 | 208 ± 62 | 85 ± 25 | 14.78 ± 0.55 |
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 | 3.94 |
|---|---|
| Hβ Broad SNR | 1.03 |
| Hγ Broad SNR | 0.40 |
| AGN frac | 0.66 |
| Host frac | 0.34 |
| log L5100,Host | 43.07 |
| 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.