6dFGS gJ225731.2-061443
Observation
| Spectrum ID | 7608050_sp1 |
|---|---|
| Alt name | g2257312-061443 |
| z | 0.0901 |
| RA, Dec | 344.3800, -6.2451 |
| MJD | 60914.57 |
| SNR/Å B/R | 7.3/12.6 |
| Obs Airmass | 1.13 |
| SMSS ID | 7608050 |
| Closest SMSS | 14.19'', 7608048 |
| SMSS Mean r6"ap | 17.1 ± 0.1 |
| 2MASS Kext | 12.7 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.040 |
| Power law αν | -1.68 ± 0.27 |
| log L5100,AGN | 42.29 ± 0.31 |
| log HβBr/[O III] | -0.34 ± 0.07 |
| log ML5100/M☉ | 7.32 ± 0.14 |
| log MHα/M☉ | 7.96 ± 0.02 |
| log MHβ/M☉ | 7.52 ± 0.05 |
| log M[O III]/M☉ | 7.82 ± 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 | 39.71 ± 0.38 | 409 ± 63 | 193 ± 32 | 12.96 ± 12.79 |
| Hγ Broad | — | — | — | — |
| [O III] 4364 | 39.99 ± 0.21 | 408 ± 63 | 172 ± 25 | 25.29 ± 7.26 |
| He II Narrow | — | — | — | — |
| He II Broad | 39.93 ± 0.38 | 1508 ± 63 | 640 ± 25 | 22.33 ± 12.64 |
| Hβ Narrow | 40.24 ± 0.12 | 409 ± 63 | 194 ± 32 | 46.00 ± 11.01 |
| Hβ Broad | 40.98 ± 0.07 | 3760 ± 58 | 1334 ± 27 | 241.68 ± 21.05 |
| [O III] 5007 | 41.32 ± 0.01 | 409 ± 63 | 194 ± 32 | 549.42 ± 12.91 |
| He I Narrow | 39.62 ± 0.35 | 408 ± 63 | 172 ± 25 | 11.70 ± 5.56 |
| He I Broad | 41.02 ± 0.07 | 7156 ± 63 | 3039 ± 25 | 294.39 ± 24.96 |
| [O I] 6300 | 40.06 ± 0.18 | 408 ± 63 | 172 ± 25 | 33.11 ± 6.91 |
| Hα Narrow | 40.89 ± 0.03 | 408 ± 63 | 172 ± 25 | 226.68 ± 6.78 |
| Hα Broad | 41.89 ± 0.01 | 5767 ± 157 | 2194 ± 25 | 2245.20 ± 28.19 |
| [N II] 6585 | 40.97 ± 0.02 | 408 ± 63 | 172 ± 25 | 270.63 ± 7.20 |
| [S II] 6718 | 40.43 ± 0.06 | 408 ± 63 | 172 ± 25 | 78.99 ± 8.24 |
| [S II] 6732 | 40.42 ± 0.07 | 408 ± 63 | 172 ± 25 | 78.20 ± 7.98 |
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 | 5.40 |
|---|---|
| Hβ Broad SNR | 1.36 |
| Hγ Broad SNR | 0.73 |
| AGN frac | 0.05 |
| Host frac | 0.95 |
| log L5100,Host | 43.53 |
| Fe II/Hβ | 0.88 |
| Fe II/[O III] | 0.39 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 1 |
balmer_snr | 2 |
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.