6dFGS gJ190504.6-771835
Observation
| Spectrum ID | 484742748_sp1 |
|---|---|
| Alt name | g1905046-771835 |
| z | 0.0836 |
| RA, Dec | 286.2689, -77.3095 |
| MJD | 60162.5 |
| SNR/Å B/R | 10.1/16.2 |
| Obs Airmass | 1.44 |
| SMSS ID | 484742748 |
| Closest SMSS | 10.77'', 484742747 |
| SMSS Mean r6"ap | 16.7 ± 0.0 |
| 2MASS Kext | 13.1 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.143 |
| Power law αν | -1.28 ± 0.04 |
| log L5100,AGN | 43.44 ± 0.02 |
| log HβBr/[O III] | <-1.20 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 7.02 ± 0.03 |
| 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 | — | — | — | — |
| He II Narrow | 39.84 ± 0.32 | 424 ± 62 | 179 ± 25 | 1.21 ± 0.49 |
| He II Broad | 40.50 ± 0.17 | 1694 ± 62 | 719 ± 25 | 5.44 ± 1.04 |
| Hβ Narrow | 40.98 ± 0.05 | 572 ± 63 | 438 ± 25 | 16.98 ± 0.92 |
| Hβ Broad | <40.69 | — | — | — |
| [O III] 5007 | 41.89 ± 0.01 | 572 ± 63 | 438 ± 25 | 142.61 ± 1.08 |
| He I Narrow | 39.77 ± 0.30 | 424 ± 62 | 179 ± 25 | 1.21 ± 0.40 |
| He I Broad | 39.52 ± 0.50 | 1185 ± 62 | 503 ± 25 | 0.68 ± 0.68 |
| [O I] 6300 | 40.66 ± 0.04 | 424 ± 62 | 179 ± 25 | 9.84 ± 0.45 |
| Hα Narrow | 41.30 ± 0.01 | 424 ± 62 | 179 ± 25 | 44.14 ± 0.53 |
| Hα Broad | 41.73 ± 0.01 | 2175 ± 66 | 690 ± 25 | 119.53 ± 0.90 |
| [N II] 6585 | 41.22 ± 0.01 | 424 ± 62 | 179 ± 25 | 36.48 ± 0.50 |
| [S II] 6718 | 41.08 ± 0.02 | 424 ± 62 | 179 ± 25 | 27.08 ± 0.63 |
| [S II] 6732 | 41.02 ± 0.02 | 424 ± 62 | 179 ± 25 | 23.48 ± 0.65 |
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 | 10.17 |
|---|---|
| Hβ Broad SNR | 0.47 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.53 |
| Host frac | 0.47 |
| log L5100,Host | 43.38 |
| Fe II/Hβ | — |
| Fe II/[O III] | 0.07 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 2 |
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.