6dFGS gJ205139.5-175306
Observation
| Spectrum ID | 298260629_sp2 |
|---|---|
| Alt name | g2051395-175306 |
| z | 0.0876 |
| RA, Dec | 312.9146, -17.8849 |
| MJD | 61128.76 |
| SNR/Å B/R | 3.1/5.0 |
| Obs Airmass | 1.98 |
| SMSS ID | 298260629 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 17.9 ± 0.1 |
| 2MASS Kext | nan ± nan |
AGN Properties
| Spectrum Type | Sy 1.5+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.052 |
| Power law αν | -1.75 ± 0.11 |
| log L5100,AGN | 42.10 ± 0.40 |
| log HβBr/[O III] | <-0.14 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 7.46 ± 0.24 |
| 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 | 39.55 ± 0.41 | 340 ± 63 | 183 ± 28 | 13.78 ± 13.43 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.51 ± 0.37 | 321 ± 62 | 136 ± 25 | 12.52 ± 9.42 |
| He II Narrow | 39.41 ± 0.43 | 321 ± 62 | 136 ± 25 | 10.19 ± 8.94 |
| He II Broad | — | — | — | — |
| Hβ Narrow | — | — | — | — |
| Hβ Broad | <40.77 | — | — | — |
| [O III] 5007 | 40.91 ± 0.02 | 340 ± 63 | 183 ± 28 | 328.92 ± 12.33 |
| He I Narrow | — | — | — | — |
| He I Broad | — | — | — | — |
| [O I] 6300 | 39.95 ± 0.16 | 321 ± 62 | 136 ± 25 | 38.30 ± 10.10 |
| Hα Narrow | 40.56 ± 0.04 | 321 ± 62 | 136 ± 25 | 155.52 ± 9.13 |
| Hα Broad | 41.32 ± 0.05 | 4857 ± 1365 | 2458 ± 49 | 896.44 ± 52.13 |
| [N II] 6585 | 40.51 ± 0.05 | 321 ± 62 | 136 ± 25 | 139.54 ± 10.35 |
| [S II] 6718 | 39.64 ± 0.35 | 321 ± 62 | 136 ± 25 | 18.83 ± 14.24 |
| [S II] 6732 | 40.14 ± 0.11 | 321 ± 62 | 136 ± 25 | 59.50 ± 13.02 |
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 | 1.59 |
|---|---|
| Hβ Broad SNR | 0.46 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.08 |
| Host frac | 0.92 |
| log L5100,Host | 43.16 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
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.