6dFGS gJ215703.6-732221
Observation
| Spectrum ID | 486500610_sp1 |
|---|---|
| Alt name | g2157036-732221 |
| z | 0.0962 |
| RA, Dec | 329.2651, -73.3724 |
| MJD | 60168.59 |
| SNR/Å B/R | 2.2/4.2 |
| Obs Airmass | 1.35 |
| SMSS ID | 486500610 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | nan ± nan |
| 2MASS Kext | 12.7 ± 0.1 |
AGN Properties
| Spectrum Type | Bad |
|---|---|
| Quality Flag | bad_blue |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.042 |
| Power law αν | -0.93 ± 0.41 |
| log L5100,AGN | 42.67 ± 0.05 |
| log HβBr/[O III] | — |
| log ML5100/M☉ | — |
| log MHα/M☉ | 6.45 ± 0.06 |
| log MHβ/M☉ | — |
| log M[O III]/M☉ | — |
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 | — | — | — | — |
| [O III] 4364 | — | — | — | — |
| He II Narrow | 39.70 ± 0.24 | 268 ± 62 | 111 ± 25 | 5.01 ± 1.50 |
| He II Broad | — | — | — | — |
| Hβ Narrow | — | — | — | — |
| Hβ Broad | — | — | — | — |
| [O III] 5007 | 40.82 ± 0.03 | 312 ± 64 | 189 ± 27 | 71.37 ± 2.54 |
| He I Narrow | — | — | — | — |
| He I Broad | — | — | — | — |
| [O I] 6300 | 39.92 ± 0.15 | 268 ± 62 | 111 ± 25 | 11.36 ± 2.53 |
| Hα Narrow | 40.31 ± 0.05 | 268 ± 62 | 111 ± 25 | 29.34 ± 1.52 |
| Hα Broad | 40.92 ± 0.04 | 1994 ± 64 | 695 ± 25 | 118.27 ± 5.27 |
| [N II] 6585 | 40.39 ± 0.04 | 268 ± 62 | 111 ± 25 | 35.50 ± 1.55 |
| [S II] 6718 | 39.89 ± 0.13 | 268 ± 62 | 111 ± 25 | 11.46 ± 2.32 |
| [S II] 6732 | 39.97 ± 0.09 | 268 ± 62 | 111 ± 25 | 13.72 ± 2.02 |
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 | 2.53 |
|---|---|
| Hβ Broad SNR | 0.65 |
| Hγ Broad SNR | 0.00 |
| AGN frac | 0.63 |
| Host frac | 0.37 |
| log L5100,Host | 42.44 |
| Fe II/Hβ | — |
| Fe II/[O III] | — |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 2 |
balmer_snr | 2 |
hb_width | 2 |
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.