6dFGS gJ235457.7-054017
Observation
| Spectrum ID | 8609351_sp1 |
|---|---|
| Alt name | g2354577-054017 |
| z | 0.0806 |
| RA, Dec | 358.7402, -5.6713 |
| MJD | 59397.8 |
| SNR/Å B/R | 1.0/1.2 |
| Obs Airmass | 1.11 |
| SMSS ID | 8609351 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 18.0 ± 0.1 |
| 2MASS Kext | nan ± nan |
AGN Properties
| Spectrum Type | Bad |
|---|---|
| Quality Flag | bad_all |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.026 |
| Power law αν | 0.48 ± 0.02 |
| log L5100,AGN | 42.74 ± 0.03 |
| log HβBr/[O III] | -0.58 ± 0.22 |
| log ML5100/M☉ | 6.93 ± 0.11 |
| log MHα/M☉ | 6.10 ± 0.08 |
| log MHβ/M☉ | 6.73 ± 0.16 |
| log M[O III]/M☉ | 7.13 ± 0.11 |
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 | 39.62 ± 0.35 | 265 ± 62 | 106 ± 25 | 2.64 ± 2.02 |
| He II Narrow | 39.56 ± 0.40 | 265 ± 62 | 106 ± 25 | 2.79 ± 2.12 |
| He II Broad | 40.09 ± 0.37 | 1236 ± 62 | 523 ± 25 | 9.29 ± 4.93 |
| Hβ Narrow | 39.76 ± 0.45 | 348 ± 66 | 235 ± 26 | 4.79 ± 4.09 |
| Hβ Broad | 40.50 ± 0.22 | 1934 ± 249 | 728 ± 40 | 24.98 ± 8.29 |
| [O III] 5007 | 41.08 ± 0.02 | 348 ± 66 | 235 ± 26 | 108.78 ± 4.49 |
| He I Narrow | — | — | — | — |
| He I Broad | 39.80 ± 0.41 | 1267 ± 62 | 537 ± 25 | 8.46 ± 5.08 |
| [O I] 6300 | — | — | — | — |
| Hα Narrow | 40.31 ± 0.06 | 265 ± 62 | 106 ± 25 | 35.85 ± 2.22 |
| Hα Broad | 40.96 ± 0.04 | 1294 ± 94 | 481 ± 34 | 158.92 ± 6.47 |
| [N II] 6585 | 39.10 ± 0.51 | 265 ± 62 | 106 ± 25 | 2.23 ± 2.18 |
| [S II] 6718 | 39.15 ± 0.48 | 265 ± 62 | 106 ± 25 | 2.61 ± 2.57 |
| [S II] 6732 | 39.77 ± 0.20 | 265 ± 62 | 106 ± 25 | 11.10 ± 2.77 |
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 | 3.14 |
|---|---|
| Hβ Broad SNR | 1.01 |
| Hγ Broad SNR | 0.78 |
| AGN frac | 0.90 |
| Host frac | 0.09 |
| log L5100,Host | 41.71 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
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.