Z 22-21
Observation
| Spectrum ID | 170151522_sp1 |
|---|---|
| Alt name | g1538448-032248 |
| z | 0.0238 |
| RA, Dec | 234.6864, -3.3800 |
| MJD | 61113.71 |
| SNR/Å B/R | 13.6/26.1 |
| Obs Airmass | 1.18 |
| SMSS ID | 170151522 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 14.7 ± 0.0 |
| 2MASS Kext | 10.2 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.203 |
| Power law αν | 0.00 ± 0.22 |
| log L5100,AGN | 43.18 ± 0.03 |
| log HβBr/[O III] | — |
| log ML5100/M☉ | — |
| log MHα/M☉ | — |
| 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 | 39.94 ± 0.16 | 348 ± 63 | 160 ± 27 | 2.09 ± 0.43 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.53 ± 0.30 | 333 ± 62 | 141 ± 25 | 0.85 ± 0.37 |
| He II Narrow | 39.38 ± 0.36 | 333 ± 62 | 141 ± 25 | 0.69 ± 0.33 |
| He II Broad | 39.78 ± 0.31 | 1190 ± 64 | 505 ± 26 | 1.67 ± 0.64 |
| Hβ Narrow | 40.72 ± 0.03 | 348 ± 63 | 160 ± 27 | 15.87 ± 0.42 |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 41.04 ± 0.01 | 348 ± 63 | 160 ± 27 | 35.69 ± 0.45 |
| He I Narrow | 39.63 ± 0.17 | 333 ± 62 | 141 ± 25 | 1.91 ± 0.32 |
| He I Broad | 39.85 ± 0.21 | 1192 ± 75 | 506 ± 31 | 2.80 ± 0.60 |
| [O I] 6300 | 39.62 ± 0.13 | 333 ± 62 | 141 ± 25 | 2.14 ± 0.39 |
| Hα Narrow | 41.54 ± 0.01 | 333 ± 62 | 141 ± 25 | 148.35 ± 0.60 |
| Hα Broad | — | — | — | — |
| [N II] 6585 | 41.37 ± 0.01 | 333 ± 62 | 141 ± 25 | 101.23 ± 0.55 |
| [S II] 6718 | 40.60 ± 0.02 | 333 ± 62 | 141 ± 25 | 23.47 ± 0.55 |
| [S II] 6732 | 40.49 ± 0.02 | 333 ± 62 | 141 ± 25 | 18.41 ± 0.53 |
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 | 0.00 |
|---|---|
| Hβ Broad SNR | 0.00 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.44 |
| Host frac | 0.56 |
| log L5100,Host | 43.28 |
| Fe II/Hβ | — |
| Fe II/[O III] | 0.40 |
Quality flags
spurious_hab/hbb | 1.0/0 |
|---|---|
l5100 | 1 |
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.