2dFGRS TGS158Z166
Observation
| Spectrum ID | 11339821_sp1 |
|---|---|
| Alt name | g0231241-250511 |
| z | 0.0521 |
| RA, Dec | 37.8504, -25.0865 |
| MJD | 60178.77 |
| SNR/Å B/R | 13.8/26.5 |
| Obs Airmass | 1.01 |
| SMSS ID | 11339821 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.4 ± 0.0 |
| 2MASS Kext | 12.7 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.8+ |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.016 |
| Power law αν | -1.95 ± 0.04 |
| log L5100,AGN | 42.46 ± 0.06 |
| log HβBr/[O III] | <-0.70 |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.80 ± 0.04 |
| 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 | 39.20 ± 0.36 | 353 ± 63 | 264 ± 33 | 2.76 ± 2.44 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.22 ± 0.29 | 343 ± 63 | 145 ± 25 | 2.91 ± 1.27 |
| He II Narrow | 39.44 ± 0.19 | 343 ± 63 | 145 ± 25 | 4.89 ± 1.16 |
| He II Broad | 39.70 ± 0.30 | 2881 ± 63 | 1224 ± 25 | 8.84 ± 3.41 |
| Hβ Narrow | 40.10 ± 0.05 | 353 ± 63 | 265 ± 33 | 22.50 ± 2.23 |
| Hβ Broad | <40.18 | — | — | — |
| [O III] 5007 | 40.88 ± 0.01 | 353 ± 63 | 265 ± 33 | 134.66 ± 2.44 |
| He I Narrow | 39.12 ± 0.25 | 343 ± 63 | 145 ± 25 | 2.34 ± 0.75 |
| He I Broad | 39.37 ± 0.32 | 1793 ± 63 | 761 ± 25 | 4.20 ± 1.72 |
| [O I] 6300 | 39.82 ± 0.05 | 343 ± 63 | 145 ± 25 | 11.77 ± 0.77 |
| Hα Narrow | 40.68 ± 0.01 | 343 ± 63 | 145 ± 25 | 84.62 ± 1.03 |
| Hα Broad | 41.20 ± 0.02 | 2461 ± 67 | 1154 ± 105 | 285.81 ± 5.15 |
| [N II] 6585 | 40.65 ± 0.01 | 343 ± 63 | 145 ± 25 | 79.32 ± 1.05 |
| [S II] 6718 | 40.23 ± 0.02 | 343 ± 63 | 145 ± 25 | 30.70 ± 0.83 |
| [S II] 6732 | 40.15 ± 0.02 | 343 ± 63 | 145 ± 25 | 25.14 ± 0.86 |
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 | 8.29 |
|---|---|
| Hβ Broad SNR | 0.90 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.15 |
| Host frac | 0.85 |
| log L5100,Host | 43.21 |
| Fe II/Hβ | — |
| Fe II/[O III] | 0.29 |
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.