6dFGS gJ192017.6-471114
Observation
| Spectrum ID | 480208199_sp1 |
|---|---|
| Alt name | g1920176-471114 |
| z | 0.0870 |
| RA, Dec | 290.0734, -47.1871 |
| MJD | 60165.48 |
| SNR/Å B/R | 15.6/21.2 |
| Obs Airmass | 1.05 |
| SMSS ID | 480208199 |
| Closest SMSS | 12.82'', 480208217 |
| SMSS Mean r6"ap | 16.3 ± 0.0 |
| 2MASS Kext | 12.7 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.074 |
| Power law αν | -0.47 ± 0.11 |
| log L5100,AGN | 43.71 ± 0.02 |
| log HβBr/[O III] | 0.48 ± 0.02 |
| log ML5100/M☉ | 7.93 ± 0.02 |
| log MHα/M☉ | 7.49 ± 0.03 |
| log MHβ/M☉ | 7.97 ± 0.02 |
| log M[O III]/M☉ | 7.90 ± 0.02 |
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 | 40.32 ± 0.10 | 281 ± 63 | 143 ± 25 | 1.60 ± 0.21 |
| Hγ Broad | 41.19 ± 0.05 | 3285 ± 216 | 1221 ± 48 | 11.80 ± 0.68 |
| [O III] 4364 | 40.15 ± 0.13 | 276 ± 63 | 116 ± 25 | 1.11 ± 0.19 |
| He II Narrow | 39.74 ± 0.28 | 276 ± 63 | 116 ± 25 | 0.47 ± 0.19 |
| He II Broad | 40.97 ± 0.06 | 2628 ± 151 | 1116 ± 63 | 8.12 ± 0.60 |
| Hβ Narrow | 40.64 ± 0.04 | 281 ± 63 | 143 ± 25 | 4.02 ± 0.24 |
| Hβ Broad | 41.97 ± 0.02 | 3771 ± 91 | 2660 ± 91 | 85.99 ± 2.42 |
| [O III] 5007 | 41.49 ± 0.01 | 281 ± 63 | 143 ± 25 | 29.39 ± 0.28 |
| He I Narrow | 39.72 ± 0.28 | 276 ± 63 | 116 ± 25 | 0.65 ± 0.22 |
| He I Broad | 41.01 ± 0.04 | 4093 ± 124 | 1738 ± 52 | 12.63 ± 0.74 |
| [O I] 6300 | 40.07 ± 0.08 | 276 ± 63 | 116 ± 25 | 1.59 ± 0.19 |
| Hα Narrow | 41.15 ± 0.02 | 276 ± 63 | 116 ± 25 | 20.65 ± 0.32 |
| Hα Broad | 42.36 ± 0.01 | 2424 ± 72 | 1112 ± 25 | 328.53 ± 0.93 |
| [N II] 6585 | 41.08 ± 0.01 | 276 ± 63 | 116 ± 25 | 17.49 ± 0.29 |
| [S II] 6718 | 40.51 ± 0.03 | 276 ± 63 | 116 ± 25 | 4.82 ± 0.24 |
| [S II] 6732 | 40.41 ± 0.05 | 276 ± 63 | 116 ± 25 | 3.85 ± 0.26 |
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 | 33.94 |
|---|---|
| Hβ Broad SNR | 9.65 |
| Hγ Broad SNR | 2.85 |
| AGN frac | 0.75 |
| Host frac | 0.25 |
| log L5100,Host | 43.23 |
| Fe II/Hβ | 0.69 |
| Fe II/[O III] | 2.10 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 1 |
hb_width | 1 |
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.