ZW VIII 36
Observation
| Spectrum ID | 12994882_sp1 |
|---|---|
| Alt name | g0042369-104922 |
| z | 0.0419 |
| RA, Dec | 10.6536, -10.8228 |
| MJD | 60224.57 |
| SNR/Å B/R | 15.1/28.1 |
| Obs Airmass | 1.07 |
| SMSS ID | 12994882 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.9 ± 0.0 |
| 2MASS Kext | 12.3 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.027 |
| Power law αν | -1.97 ± 0.03 |
| log L5100,AGN | 43.05 ± 0.01 |
| log HβBr/[O III] | -0.38 ± 0.19 |
| log ML5100/M☉ | 7.27 ± 0.03 |
| log MHα/M☉ | 6.82 ± 0.03 |
| log MHβ/M☉ | 7.10 ± 0.11 |
| log M[O III]/M☉ | 7.42 ± 0.02 |
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 | 39.57 ± 0.14 | 228 ± 62 | 171 ± 25 | 1.72 ± 0.40 |
| Hγ Broad | 40.50 ± 0.05 | 2465 ± 183 | 926 ± 41 | 14.00 ± 0.90 |
| [O III] 4364 | 39.56 ± 0.11 | 211 ± 62 | 88 ± 25 | 1.66 ± 0.25 |
| He II Narrow | 39.54 ± 0.10 | 211 ± 62 | 88 ± 25 | 1.59 ± 0.22 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 40.23 ± 0.03 | 228 ± 62 | 171 ± 25 | 7.85 ± 0.37 |
| Hβ Broad | 40.89 +0.35−0.02 | 2431 ± 41 | 893 ± 25 | 35.68 ± 0.72 |
| [O III] 5007 | 41.27 ± 0.01 | 228 ± 62 | 171 ± 25 | 85.40 ± 0.41 |
| He I Narrow | 39.31 ± 0.10 | 211 ± 62 | 88 ± 25 | 0.94 ± 0.12 |
| He I Broad | 40.27 ± 0.04 | 2720 ± 78 | 1155 ± 32 | 8.67 ± 0.45 |
| [O I] 6300 | 39.86 ± 0.03 | 211 ± 62 | 88 ± 25 | 3.36 ± 0.14 |
| Hα Narrow | 40.70 ± 0.01 | 211 ± 62 | 88 ± 25 | 23.13 ± 0.20 |
| Hα Broad | 41.61 ± 0.01 | 1874 ± 67 | 805 ± 25 | 190.12 ± 0.55 |
| [N II] 6585 | 40.41 ± 0.01 | 211 ± 62 | 88 ± 25 | 12.01 ± 0.19 |
| [S II] 6718 | 40.15 ± 0.02 | 211 ± 62 | 88 ± 25 | 6.57 ± 0.15 |
| [S II] 6732 | 40.11 ± 0.02 | 211 ± 62 | 88 ± 25 | 5.99 ± 0.14 |
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 | 32.89 |
|---|---|
| Hβ Broad SNR | 7.08 |
| Hγ Broad SNR | 3.19 |
| AGN frac | 0.64 |
| Host frac | 0.36 |
| log L5100,Host | 42.80 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
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.