LEDA 3827236
Observation
| Spectrum ID | 101281975_sp1 |
|---|---|
| Alt name | g1428588-313935 |
| z | 0.0231 |
| RA, Dec | 217.2448, -31.6597 |
| MJD | 59726.56 |
| SNR/Å B/R | 4.8/14.6 |
| Obs Airmass | 1.03 |
| SMSS ID | 101281975 |
| Closest SMSS | 8.11'', 2164889216 |
| SMSS Mean r6"ap | 15.2 ± 0.0 |
| 2MASS Kext | 11.3 ± 0.1 |
AGN Properties
| Spectrum Type | Sy 1.5 |
|---|---|
| Quality Flag | good |
| AGN reference | 6dFGS |
| MW E(B−V) | 0.063 |
| Power law αν | 0.46 ± 0.04 |
| log L5100,AGN | 39.79 ± 0.60 |
| log HβBr/[O III] | 0.07 ± 0.06 |
| log ML5100/M☉ | 6.53 ± 0.32 |
| log MHα/M☉ | 6.80 ± 0.08 |
| log MHβ/M☉ | 7.35 ± 0.19 |
| log M[O III]/M☉ | 7.41 ± 0.19 |
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 | — | — | — | — |
| He II Broad | 39.05 ± 0.29 | 2006 ± 62 | 852 ± 25 | 744.80 ± 270.91 |
| Hβ Narrow | 38.78 ± 0.23 | 339 ± 63 | 171 ± 35 | 428.96 ± 189.43 |
| Hβ Broad | 39.96 ± 0.06 | 5239 ± 1073 | 2287 ± 53 | 6501.48 ± 513.05 |
| [O III] 5007 | 39.89 ± 0.02 | 339 ± 63 | 171 ± 35 | 5976.93 ± 217.20 |
| He I Narrow | — | — | — | — |
| He I Broad | 38.19 ± 0.47 | 1897 ± 62 | 805 ± 25 | 180.69 ± 162.82 |
| [O I] 6300 | 38.89 ± 0.06 | 338 ± 62 | 142 ± 25 | 1076.83 ± 87.13 |
| Hα Narrow | 39.47 ± 0.02 | 338 ± 62 | 142 ± 25 | 4436.66 ± 94.43 |
| Hα Broad | 40.02 ± 0.03 | 5652 ± 119 | 2104 ± 37 | 15949.26 ± 411.65 |
| [N II] 6585 | 39.47 ± 0.02 | 338 ± 62 | 142 ± 25 | 4517.50 ± 96.34 |
| [S II] 6718 | 39.14 ± 0.05 | 338 ± 62 | 142 ± 25 | 2230.04 ± 124.43 |
| [S II] 6732 | 39.01 ± 0.05 | 338 ± 62 | 142 ± 25 | 1658.72 ± 119.42 |
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 | 1.14 |
|---|---|
| Hβ Broad SNR | 1.45 |
| Hγ Broad SNR | 0.49 |
| AGN frac | 0.00 |
| Host frac | 1.00 |
| log L5100,Host | 42.19 |
| Fe II/Hβ | 0.98 |
| Fe II/[O III] | 1.15 |
Quality flags
spurious_hab/hbb | 0.0/0 |
|---|---|
l5100 | 2 |
balmer | 1 |
balmer_snr | 2 |
hb_width | 0 |
balmer_width | 1 |
Hα mass estimates from Cho+2023. Remaining mass estimates from R–L relations in Wang & Woo 2024 and zero-points from Amrutha+2026.