CGMW 3-3770
Observation
| Spectrum ID | 282252831_sp1 |
|---|---|
| Alt name | g1922033-120955 |
| z | 0.0800 |
| RA, Dec | 290.5137, -12.1652 |
| MJD | 60163.5 |
| SNR/Å B/R | 8.2/15.4 |
| Obs Airmass | 1.06 |
| SMSS ID | 282252831 |
| Closest SMSS | 7.32'', 282252829 |
| SMSS Mean r6"ap | 17.7 ± 0.2 |
| 2MASS Kext | 12.5 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.162 |
| Power law αν | -1.85 ± 0.24 |
| log L5100,AGN | 42.67 ± 0.09 |
| log HβBr/[O III] | 0.17 ± 0.45 |
| log ML5100/M☉ | 6.85 ± 0.05 |
| log MHα/M☉ | 6.84 ± 0.03 |
| log MHβ/M☉ | 6.79 ± 0.22 |
| log M[O III]/M☉ | 6.82 ± 0.05 |
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 | 40.62 ± 0.08 | 2231 ± 128 | 699 ± 25 | 44.46 ± 4.04 |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 39.22 ± 0.43 | 237 ± 63 | 99 ± 25 | 1.78 ± 1.38 |
| He II Broad | — | — | — | — |
| Hβ Narrow | 39.72 ± 0.21 | 254 ± 63 | 169 ± 31 | 5.67 ± 1.98 |
| Hβ Broad | 40.75 +0.84−0.05 | 1818 ± 26 | 673 ± 25 | 60.45 ± 3.80 |
| [O III] 5007 | 40.58 ± 0.04 | 254 ± 63 | 169 ± 31 | 41.14 ± 2.35 |
| He I Narrow | — | — | — | — |
| He I Broad | 39.47 ± 0.39 | 1490 ± 63 | 632 ± 25 | 3.31 ± 2.38 |
| [O I] 6300 | 39.30 ± 0.24 | 237 ± 63 | 99 ± 25 | 2.24 ± 0.76 |
| Hα Narrow | 40.06 ± 0.06 | 237 ± 63 | 99 ± 25 | 13.02 ± 0.90 |
| Hα Broad | 41.50 ± 0.01 | 2082 ± 65 | 795 ± 26 | 362.53 ± 3.25 |
| [N II] 6585 | 40.28 ± 0.03 | 237 ± 63 | 99 ± 25 | 21.64 ± 0.87 |
| [S II] 6718 | 39.41 ± 0.22 | 237 ± 63 | 99 ± 25 | 2.92 ± 0.91 |
| [S II] 6732 | 39.74 ± 0.14 | 237 ± 63 | 99 ± 25 | 6.28 ± 1.16 |
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 | 10.45 |
|---|---|
| Hβ Broad SNR | 2.92 |
| Hγ Broad SNR | 2.14 |
| AGN frac | 0.22 |
| Host frac | 0.79 |
| log L5100,Host | 43.23 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/2 |
|---|---|
l5100 | 1 |
balmer | 1 |
balmer_snr | 1 |
hb_width | 0 |
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.