HE 2222-0026
Observation
| Spectrum ID | 7468691_sp1 |
|---|---|
| Alt name | g2224353-001104 |
| z | 0.0582 |
| RA, Dec | 336.1471, -0.1844 |
| MJD | 60941.42 |
| SNR/Å B/R | 13.2/21.5 |
| Obs Airmass | 1.40 |
| SMSS ID | 7468691 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.5 ± 0.2 |
| 2MASS Kext | 12.7 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.060 |
| Power law αν | -0.49 ± 0.13 |
| log L5100,AGN | 43.38 ± 0.02 |
| log HβBr/[O III] | 0.68 ± 0.02 |
| log ML5100/M☉ | 7.74 ± 0.02 |
| log MHα/M☉ | 7.33 ± 0.02 |
| log MHβ/M☉ | 7.73 ± 0.03 |
| log M[O III]/M☉ | 7.55 ± 0.04 |
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 | 41.01 ± 0.04 | 2850 ± 67 | 1027 ± 25 | 16.90 ± 0.80 |
| [O III] 4364 | 39.76 ± 0.17 | 232 ± 63 | 98 ± 25 | 0.97 ± 0.22 |
| He II Narrow | 39.05 ± 0.44 | 232 ± 63 | 98 ± 25 | 0.21 ± 0.20 |
| He II Broad | 40.62 ± 0.08 | 3535 ± 70 | 1501 ± 28 | 7.84 ± 0.88 |
| Hβ Narrow | — | — | — | — |
| Hβ Broad | 41.56 ± 0.01 | 3543 ± 74 | 1330 ± 26 | 70.84 ± 0.92 |
| [O III] 5007 | 40.88 ± 0.02 | 355 ± 64 | 206 ± 26 | 15.61 ± 0.36 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.45 ± 0.07 | 3213 ± 72 | 1365 ± 29 | 7.32 ± 0.69 |
| [O I] 6300 | 39.59 ± 0.13 | 232 ± 63 | 98 ± 25 | 1.13 ± 0.24 |
| Hα Narrow | 40.59 ± 0.02 | 232 ± 63 | 98 ± 25 | 12.04 ± 0.29 |
| Hα Broad | 42.01 ± 0.01 | 2550 ± 71 | 1164 ± 25 | 319.88 ± 0.97 |
| [N II] 6585 | 40.20 ± 0.05 | 232 ± 63 | 98 ± 25 | 4.96 ± 0.26 |
| [S II] 6718 | 39.98 ± 0.05 | 232 ± 63 | 98 ± 25 | 3.09 ± 0.28 |
| [S II] 6732 | 39.82 ± 0.07 | 232 ± 63 | 98 ± 25 | 2.14 ± 0.20 |
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 | 27.82 |
|---|---|
| Hβ Broad SNR | 10.04 |
| Hγ Broad SNR | 3.99 |
| AGN frac | 0.72 |
| Host frac | 0.28 |
| log L5100,Host | 42.97 |
| Fe II/Hβ | 0.87 |
| Fe II/[O III] | 4.14 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
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.