ESO 141-55
Observation
| Spectrum ID | 479332726_sp1 |
|---|---|
| Alt name | g1921142-584013 |
| z | 0.0367 |
| RA, Dec | 290.3090, -58.6702 |
| MJD | 60408.79 |
| SNR/Å B/R | 11.3/13.2 |
| Obs Airmass | 1.17 |
| SMSS ID | 479332726 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 14.0 ± 0.0 |
| 2MASS Kext | 10.2 ± 0.0 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.094 |
| Power law αν | -0.65 ± 0.07 |
| log L5100,AGN | 44.08 ± 0.01 |
| log HβBr/[O III] | 0.61 ± 0.04 |
| log ML5100/M☉ | 8.45 ± 0.04 |
| log MHα/M☉ | 8.30 ± 0.05 |
| log MHβ/M☉ | 8.54 ± 0.04 |
| log M[O III]/M☉ | 8.43 ± 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 | 40.49 ± 0.27 | 443 ± 69 | 353 ± 76 | 1.09 ± 0.44 |
| Hγ Broad | 41.91 ± 0.14 | 3563 ± 1104 | 1364 ± 506 | 26.88 ± 0.89 |
| [O III] 4364 | 40.59 ± 0.26 | 360 ± 73 | 152 ± 30 | 1.50 ± 0.27 |
| He II Narrow | 40.27 ± 0.24 | 360 ± 73 | 152 ± 30 | 0.73 ± 0.23 |
| He II Broad | 40.69 ± 0.25 | 1999 ± 741 | 849 ± 315 | 1.65 ± 0.56 |
| Hβ Narrow | 40.92 ± 0.14 | 443 ± 69 | 353 ± 76 | 3.39 ± 0.48 |
| Hβ Broad | 42.43 ± 0.03 | 5704 ± 259 | 2236 ± 206 | 112.33 ± 1.13 |
| [O III] 5007 | 41.82 ± 0.03 | 443 ± 69 | 353 ± 76 | 29.02 ± 0.48 |
| He I Narrow | 40.23 ± 0.19 | 360 ± 73 | 152 ± 30 | 0.92 ± 0.22 |
| He I Broad | 41.37 ± 0.14 | 3243 ± 923 | 1377 ± 392 | 11.35 ± 0.67 |
| [O I] 6300 | 40.03 ± 0.26 | 360 ± 73 | 152 ± 30 | 0.62 ± 0.23 |
| Hα Narrow | 41.23 ± 0.06 | 360 ± 73 | 152 ± 30 | 10.45 ± 0.45 |
| Hα Broad | 42.92 ± 0.01 | 4147 ± 183 | 1890 ± 91 | 496.75 ± 1.32 |
| [N II] 6585 | 40.60 ± 0.16 | 360 ± 73 | 152 ± 30 | 2.54 ± 0.41 |
| [S II] 6718 | 40.62 ± 0.12 | 360 ± 73 | 152 ± 30 | 2.65 ± 0.27 |
| [S II] 6732 | 40.66 ± 0.09 | 360 ± 73 | 152 ± 30 | 2.96 ± 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 | 28.92 |
|---|---|
| Hβ Broad SNR | 10.03 |
| Hγ Broad SNR | 5.21 |
| AGN frac | 0.98 |
| Host frac | 0.01 |
| log L5100,Host | 42.18 |
| Fe II/Hβ | 0.51 |
| Fe II/[O III] | 2.04 |
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.