LEDA 622139
Observation
| Spectrum ID | 488201165_sp1 |
|---|---|
| Alt name | g2112449-373012 |
| z | 0.0430 |
| RA, Dec | 318.1870, -37.5033 |
| MJD | 60085.8 |
| SNR/Å B/R | 17.4/25.2 |
| Obs Airmass | 1.01 |
| SMSS ID | 488201165 |
| Closest SMSS | None (< 15") |
| SMSS Mean r6"ap | 15.9 ± 0.1 |
| 2MASS Kext | 12.4 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.2 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.036 |
| Power law αν | -0.35 ± 0.14 |
| log L5100,AGN | 43.34 ± 0.02 |
| log HβBr/[O III] | 0.59 ± 0.02 |
| log ML5100/M☉ | 7.41 ± 0.03 |
| log MHα/M☉ | 6.89 ± 0.04 |
| log MHβ/M☉ | 7.37 ± 0.04 |
| log M[O III]/M☉ | 7.23 ± 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 | 40.06 ± 0.09 | 390 ± 63 | 168 ± 25 | 2.05 ± 0.24 |
| Hγ Broad | 40.95 ± 0.03 | 2482 ± 121 | 917 ± 43 | 16.15 ± 0.57 |
| [O III] 4364 | 39.63 ± 0.20 | 388 ± 63 | 165 ± 25 | 0.78 ± 0.19 |
| He II Narrow | 39.60 ± 0.17 | 388 ± 63 | 165 ± 25 | 0.80 ± 0.19 |
| He II Broad | 41.15 ± 0.03 | 10654 ± 168 | 4524 ± 71 | 29.04 ± 1.04 |
| Hβ Narrow | 40.54 ± 0.03 | 390 ± 63 | 168 ± 25 | 7.32 ± 0.26 |
| Hβ Broad | 41.45 ± 0.01 | 2467 ± 68 | 1425 ± 47 | 61.63 ± 0.84 |
| [O III] 5007 | 40.87 ± 0.01 | 390 ± 63 | 168 ± 25 | 16.59 ± 0.29 |
| He I Narrow | 39.80 ± 0.08 | 388 ± 63 | 165 ± 25 | 1.85 ± 0.19 |
| He I Broad | 40.81 ± 0.03 | 4259 ± 107 | 1809 ± 44 | 19.09 ± 0.63 |
| [O I] 6300 | 39.57 ± 0.11 | 388 ± 63 | 165 ± 25 | 1.24 ± 0.21 |
| Hα Narrow | 41.14 ± 0.01 | 388 ± 63 | 165 ± 25 | 49.06 ± 0.36 |
| Hα Broad | 41.82 ± 0.01 | 1762 ± 71 | 882 ± 25 | 232.03 ± 0.77 |
| [N II] 6585 | 40.87 ± 0.01 | 388 ± 63 | 165 ± 25 | 26.27 ± 0.34 |
| [S II] 6718 | 40.39 ± 0.02 | 388 ± 63 | 165 ± 25 | 8.93 ± 0.25 |
| [S II] 6732 | 40.28 ± 0.02 | 388 ± 63 | 165 ± 25 | 6.97 ± 0.24 |
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 | 33.87 |
|---|---|
| Hβ Broad SNR | 13.03 |
| Hγ Broad SNR | 5.87 |
| AGN frac | 0.76 |
| Host frac | 0.24 |
| log L5100,Host | 42.84 |
| Fe II/Hβ | 0.55 |
| Fe II/[O III] | 2.14 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 0 |
balmer | 0 |
balmer_snr | 0 |
hb_width | 1 |
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.