6dFGS gJ231809.4-112546
Observation
| Spectrum ID | 7884324_sp1 |
|---|---|
| Alt name | g2318094-112546 |
| z | 0.0424 |
| RA, Dec | 349.5391, -11.4293 |
| MJD | 60941.44 |
| SNR/Å B/R | 7.2/8.6 |
| Obs Airmass | 1.34 |
| SMSS ID | 7884324 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 17.3 ± 0.1 |
| 2MASS Kext | nan ± nan |
AGN Properties
| Spectrum Type | Bad |
|---|---|
| Quality Flag | bad_all |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.025 |
| Power law αν | 0.49 ± 0.01 |
| log L5100,AGN | 42.87 ± 0.01 |
| log HβBr/[O III] | — |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.55 ± 0.06 |
| 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 | 39.23 ± 0.21 | 380 ± 62 | 160 ± 25 | 0.79 ± 0.33 |
| He II Narrow | — | — | — | — |
| He II Broad | 40.48 ± 0.07 | 6136 ± 62 | 2606 ± 25 | 17.08 ± 1.37 |
| Hβ Narrow | — | — | — | — |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 39.27 ± 0.21 | 423 ± 242 | 279 ± 29 | 1.21 ± 0.40 |
| He I Narrow | 38.57 ± 0.47 | 380 ± 62 | 160 ± 25 | 0.37 ± 0.28 |
| He I Broad | 40.33 ± 0.03 | 2742 ± 62 | 1164 ± 25 | 21.12 ± 0.81 |
| [O I] 6300 | 39.12 ± 0.15 | 380 ± 62 | 160 ± 25 | 1.56 ± 0.36 |
| Hα Narrow | — | — | — | — |
| Hα Broad | 40.80 ± 0.02 | 2454 ± 83 | 1075 ± 40 | 81.92 ± 1.43 |
| [N II] 6585 | — | — | — | — |
| [S II] 6718 | — | — | — | — |
| [S II] 6732 | 38.62 ± 0.42 | 380 ± 62 | 160 ± 25 | 0.57 ± 0.38 |
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 | 4.14 |
|---|---|
| Hβ Broad SNR | 0.73 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.99 |
| Host frac | 0.01 |
| log L5100,Host | 40.70 |
| 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.