6dFGS gJ222543.8-575026
Observation
| Spectrum ID | 488875596_sp1 |
|---|---|
| Alt name | g2225438-575026 |
| z | 0.0673 |
| RA, Dec | 336.4327, -57.8406 |
| MJD | 60171.58 |
| SNR/Å B/R | 13.3/21.5 |
| Obs Airmass | 1.14 |
| SMSS ID | 488875596 |
| Closest SMSS | 10.36'', 1597648929 |
| SMSS Mean r6"ap | 16.9 ± 0.1 |
| 2MASS Kext | 12.9 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.020 |
| Power law αν | -1.64 ± 0.06 |
| log L5100,AGN | 43.12 ± 0.02 |
| log HβBr/[O III] | 0.32 ± 0.02 |
| log ML5100/M☉ | 6.86 ± 0.04 |
| log MHα/M☉ | 6.57 ± 0.04 |
| log MHβ/M☉ | 6.78 ± 0.05 |
| log M[O III]/M☉ | 6.76 ± 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 | 39.40 ± 0.36 | 399 ± 63 | 155 ± 25 | 0.92 ± 0.36 |
| Hγ Broad | 40.57 ± 0.05 | 1237 ± 80 | 461 ± 32 | 13.29 ± 0.77 |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 39.10 ± 0.39 | 290 ± 63 | 123 ± 25 | 0.48 ± 0.32 |
| He II Broad | 40.50 ± 0.08 | 3400 ± 65 | 1444 ± 26 | 12.04 ± 1.12 |
| Hβ Narrow | 39.09 ± 0.47 | 399 ± 63 | 155 ± 25 | 0.47 ± 0.34 |
| Hβ Broad | 41.13 ± 0.02 | 1479 ± 55 | 627 ± 31 | 52.29 ± 0.99 |
| [O III] 5007 | 40.81 ± 0.01 | 399 ± 63 | 155 ± 25 | 24.92 ± 0.41 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.17 ± 0.07 | 1581 ± 64 | 671 ± 26 | 6.05 ± 0.61 |
| [O I] 6300 | 38.88 ± 0.37 | 290 ± 63 | 123 ± 25 | 0.32 ± 0.21 |
| Hα Narrow | 40.41 ± 0.03 | 290 ± 63 | 123 ± 25 | 10.88 ± 0.32 |
| Hα Broad | 41.60 ± 0.01 | 1417 ± 64 | 611 ± 25 | 172.14 ± 0.98 |
| [N II] 6585 | 40.37 ± 0.02 | 290 ± 63 | 123 ± 25 | 9.94 ± 0.27 |
| [S II] 6718 | 40.02 ± 0.04 | 290 ± 63 | 123 ± 25 | 4.53 ± 0.26 |
| [S II] 6732 | 40.04 ± 0.04 | 290 ± 63 | 123 ± 25 | 4.76 ± 0.27 |
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 | 27.37 |
|---|---|
| Hβ Broad SNR | 11.88 |
| Hγ Broad SNR | 4.71 |
| AGN frac | 0.55 |
| Host frac | 0.45 |
| log L5100,Host | 43.03 |
| Fe II/Hβ | 0.79 |
| Fe II/[O III] | 1.68 |
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.