6dFGS gJ062959.2-480408
Observation
| Spectrum ID | 472992293_sp1 |
|---|---|
| Alt name | g0629592-480408 |
| z | 0.0427 |
| RA, Dec | 97.4967, -48.0689 |
| MJD | 60288.63 |
| SNR/Å B/R | 8.3/17.0 |
| Obs Airmass | 1.05 |
| SMSS ID | 472992293 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 16.8 ± 0.1 |
| 2MASS Kext | 13.6 ± 0.2 |
AGN Properties
| Spectrum Type | Sy 1.8 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.045 |
| Power law αν | -0.09 ± 0.44 |
| log L5100,AGN | 42.11 ± 0.11 |
| log HβBr/[O III] | -0.83 ± 0.07 |
| log ML5100/M☉ | 6.70 ± 0.29 |
| log MHα/M☉ | 6.30 ± 0.05 |
| log MHβ/M☉ | 6.73 ± 0.29 |
| log M[O III]/M☉ | 7.25 ± 0.29 |
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 | 39.98 ± 0.08 | 163 ± 62 | 958 ± 53 | 27.47 ± 13.41 |
| Hγ Broad | 40.14 ± 0.17 | 2436 ± 640 | 1636 ± 173 | 36.23 ± 19.02 |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 39.72 ± 0.10 | 166 ± 62 | 65 ± 25 | 17.53 ± 10.12 |
| He II Broad | 40.38 ± 0.09 | 2414 ± 66 | 1025 ± 26 | 81.05 ± 29.93 |
| Hβ Narrow | 40.30 ± 0.03 | 163 ± 62 | 1118 ± 32 | 70.90 ± 14.29 |
| Hβ Broad | 40.42 ± 0.07 | 2024 ± 724 | 2177 ± 165 | 94.64 ± 28.18 |
| [O III] 5007 | 41.25 ± 0.01 | 163 ± 62 | 1871 ± 27 | 682.69 ± 28.56 |
| He I Narrow | — | — | — | — |
| He I Broad | 40.19 ± 0.08 | 3104 ± 67 | 1318 ± 27 | 80.52 ± 28.85 |
| [O I] 6300 | 39.75 ± 0.04 | 166 ± 62 | 65 ± 25 | 33.30 ± 9.06 |
| Hα Narrow | 40.79 ± 0.01 | 166 ± 62 | 65 ± 25 | 396.67 ± 16.02 |
| Hα Broad | 40.98 ± 0.01 | 1624 ± 64 | 1547 ± 25 | 607.81 ± 31.03 |
| [N II] 6585 | 40.49 ± 0.01 | 166 ± 62 | 65 ± 25 | 200.09 ± 15.00 |
| [S II] 6718 | 40.05 ± 0.02 | 166 ± 62 | 65 ± 25 | 75.35 ± 12.72 |
| [S II] 6732 | 40.01 ± 0.02 | 166 ± 62 | 65 ± 25 | 68.03 ± 12.47 |
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 | 6.27 |
|---|---|
| Hβ Broad SNR | 1.66 |
| Hγ Broad SNR | 1.14 |
| AGN frac | 0.13 |
| Host frac | 0.87 |
| log L5100,Host | 42.94 |
| Fe II/Hβ | 0.72 |
| Fe II/[O III] | 0.11 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 2 |
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.